\\n\", styles: [\".ngx-slider-inner-tooltip{height:100%}\\n\"] }]\n }], propDecorators: { template: [{\n type: Input\n }], tooltip: [{\n type: Input\n }], placement: [{\n type: Input\n }], content: [{\n type: Input\n }] } });\n\nclass Tick {\n selected = false;\n style = {};\n tooltip = null;\n tooltipPlacement = null;\n value = null;\n valueTooltip = null;\n valueTooltipPlacement = null;\n legend = null;\n}\nclass Dragging {\n active = false;\n value = 0;\n difference = 0;\n position = 0;\n lowLimit = 0;\n highLimit = 0;\n}\nclass ModelValues {\n value;\n highValue;\n static compare(x, y) {\n if (ValueHelper.isNullOrUndefined(x) && ValueHelper.isNullOrUndefined(y)) {\n return false;\n }\n if (ValueHelper.isNullOrUndefined(x) !== ValueHelper.isNullOrUndefined(y)) {\n return false;\n }\n return x.value === y.value && x.highValue === y.highValue;\n }\n}\nclass ModelChange extends ModelValues {\n // Flag used to by-pass distinctUntilChanged() filter on input values\n // (sometimes there is a need to pass values through even though the model values have not changed)\n forceChange;\n static compare(x, y) {\n if (ValueHelper.isNullOrUndefined(x) && ValueHelper.isNullOrUndefined(y)) {\n return false;\n }\n if (ValueHelper.isNullOrUndefined(x) !== ValueHelper.isNullOrUndefined(y)) {\n return false;\n }\n return (x.value === y.value &&\n x.highValue === y.highValue &&\n x.forceChange === y.forceChange);\n }\n}\nclass InputModelChange extends ModelChange {\n internalChange;\n}\nclass OutputModelChange extends ModelChange {\n userEventInitiated;\n}\nconst NGX_SLIDER_CONTROL_VALUE_ACCESSOR = {\n provide: NG_VALUE_ACCESSOR,\n /* tslint:disable-next-line: no-use-before-declare */\n useExisting: forwardRef(() => SliderComponent),\n multi: true,\n};\nclass SliderComponent {\n renderer;\n elementRef;\n changeDetectionRef;\n zone;\n allowUnsafeHtmlInSlider;\n // Add ngx-slider class to the host element - this is static, should never change\n sliderElementNgxSliderClass = true;\n // Model for low value of slider. For simple slider, this is the only input. For range slider, this is the low value.\n value = null;\n // Output for low value slider to support two-way bindings\n valueChange = new EventEmitter();\n // Model for high value of slider. Not used in simple slider. For range slider, this is the high value.\n highValue = null;\n // Output for high value slider to support two-way bindings\n highValueChange = new EventEmitter();\n // An object with all the other options of the slider.\n // Each option can be updated at runtime and the slider will automatically be re-rendered.\n options = new Options();\n // Event emitted when user starts interaction with the slider\n userChangeStart = new EventEmitter();\n // Event emitted on each change coming from user interaction\n userChange = new EventEmitter();\n // Event emitted when user finishes interaction with the slider\n userChangeEnd = new EventEmitter();\n manualRefreshSubscription;\n // Input event that triggers slider refresh (re-positioning of slider elements)\n set manualRefresh(manualRefresh) {\n this.unsubscribeManualRefresh();\n this.manualRefreshSubscription = manualRefresh.subscribe(() => {\n setTimeout(() => this.calculateViewDimensionsAndDetectChanges());\n });\n }\n triggerFocusSubscription;\n // Input event that triggers setting focus on given slider handle\n set triggerFocus(triggerFocus) {\n this.unsubscribeTriggerFocus();\n this.triggerFocusSubscription = triggerFocus.subscribe((pointerType) => {\n this.focusPointer(pointerType);\n });\n }\n // Slider type, true means range slider\n get range() {\n return (!ValueHelper.isNullOrUndefined(this.value) &&\n !ValueHelper.isNullOrUndefined(this.highValue));\n }\n // Set to true if init method already executed\n initHasRun = false;\n // Changes in model inputs are passed through this subject\n // These are all changes coming in from outside the component through input bindings or reactive form inputs\n inputModelChangeSubject = new Subject();\n inputModelChangeSubscription = null;\n // Changes to model outputs are passed through this subject\n // These are all changes that need to be communicated to output emitters and registered callbacks\n outputModelChangeSubject = new Subject();\n outputModelChangeSubscription = null;\n // Low value synced to model low value\n viewLowValue = null;\n // High value synced to model high value\n viewHighValue = null;\n // Options synced to model options, based on defaults\n viewOptions = new Options();\n // Half of the width or height of the slider handles\n handleHalfDimension = 0;\n // Maximum position the slider handle can have\n maxHandlePosition = 0;\n // Which handle is currently tracked for move events\n currentTrackingPointer = null;\n // Internal variable to keep track of the focus element\n currentFocusPointer = null;\n // Used to call onStart on the first keydown event\n firstKeyDown = false;\n // Current touch id of touch event being handled\n touchId = null;\n // Values recorded when first dragging the bar\n dragging = new Dragging();\n /* Slider DOM elements */\n // Left selection bar outside two handles\n leftOuterSelectionBarElement;\n // Right selection bar outside two handles\n rightOuterSelectionBarElement;\n // The whole slider bar\n fullBarElement;\n // Highlight between two handles\n selectionBarElement;\n // Left slider handle\n minHandleElement;\n // Right slider handle\n maxHandleElement;\n // Floor label\n floorLabelElement;\n // Ceiling label\n ceilLabelElement;\n // Label above the low value\n minHandleLabelElement;\n // Label above the high value\n maxHandleLabelElement;\n // Combined label\n combinedLabelElement;\n // The ticks\n ticksElement;\n // Optional custom template for displaying tooltips\n tooltipTemplate;\n // Host element class bindings\n sliderElementVerticalClass = false;\n sliderElementAnimateClass = false;\n sliderElementWithLegendClass = false;\n sliderElementDisabledAttr = null;\n sliderElementAriaLabel = 'ngx-slider';\n // CSS styles and class flags\n barStyle = {};\n minPointerStyle = {};\n maxPointerStyle = {};\n fullBarTransparentClass = false;\n selectionBarDraggableClass = false;\n ticksUnderValuesClass = false;\n // Whether to show/hide ticks\n get showTicks() {\n return this.viewOptions.showTicks;\n }\n /* If tickStep is set or ticksArray is specified.\n In this case, ticks values should be displayed below the slider. */\n intermediateTicks = false;\n // Ticks array as displayed in view\n ticks = [];\n // Event listeners\n eventListenerHelper = null;\n onMoveEventListener = null;\n onEndEventListener = null;\n // Whether currently moving the slider (between onStart() and onEnd())\n moving = false;\n // Observer for slider element resize events\n resizeObserver = null;\n // Callbacks for reactive forms support\n onTouchedCallback = null;\n onChangeCallback = null;\n constructor(renderer, elementRef, changeDetectionRef, zone, allowUnsafeHtmlInSlider) {\n this.renderer = renderer;\n this.elementRef = elementRef;\n this.changeDetectionRef = changeDetectionRef;\n this.zone = zone;\n this.allowUnsafeHtmlInSlider = allowUnsafeHtmlInSlider;\n this.eventListenerHelper = new EventListenerHelper(this.renderer);\n }\n // OnInit interface\n ngOnInit() {\n this.viewOptions = new Options();\n Object.assign(this.viewOptions, this.options);\n // We need to run these two things first, before the rest of the init in ngAfterViewInit(),\n // because these two settings are set through @HostBinding and Angular change detection\n // mechanism doesn't like them changing in ngAfterViewInit()\n this.updateDisabledState();\n this.updateVerticalState();\n this.updateAriaLabel();\n }\n // AfterViewInit interface\n ngAfterViewInit() {\n this.applyOptions();\n this.subscribeInputModelChangeSubject();\n this.subscribeOutputModelChangeSubject();\n // Once we apply options, we need to normalise model values for the first time\n this.renormaliseModelValues();\n this.viewLowValue = this.modelValueToViewValue(this.value);\n if (this.range) {\n this.viewHighValue = this.modelValueToViewValue(this.highValue);\n }\n else {\n this.viewHighValue = null;\n }\n this.updateVerticalState(); // need to run this again to cover changes to slider elements\n this.manageElementsStyle();\n this.updateDisabledState();\n this.calculateViewDimensions();\n this.addAccessibility();\n this.updateCeilLabel();\n this.updateFloorLabel();\n this.initHandles();\n this.manageEventsBindings();\n this.updateAriaLabel();\n this.subscribeResizeObserver();\n this.initHasRun = true;\n // Run change detection manually to resolve some issues when init procedure changes values used in the view\n if (!this.isRefDestroyed()) {\n this.changeDetectionRef.detectChanges();\n }\n }\n // OnChanges interface\n ngOnChanges(changes) {\n // Always apply options first\n if (!ValueHelper.isNullOrUndefined(changes.options) &&\n JSON.stringify(changes.options.previousValue) !==\n JSON.stringify(changes.options.currentValue)) {\n this.onChangeOptions();\n }\n // Then value changes\n if (!ValueHelper.isNullOrUndefined(changes.value) ||\n !ValueHelper.isNullOrUndefined(changes.highValue)) {\n this.inputModelChangeSubject.next({\n value: this.value,\n highValue: this.highValue,\n forceChange: false,\n internalChange: false,\n });\n }\n }\n // OnDestroy interface\n ngOnDestroy() {\n this.unbindEvents();\n this.unsubscribeResizeObserver();\n this.unsubscribeInputModelChangeSubject();\n this.unsubscribeOutputModelChangeSubject();\n this.unsubscribeManualRefresh();\n this.unsubscribeTriggerFocus();\n }\n // ControlValueAccessor interface\n writeValue(obj) {\n if (obj instanceof Array) {\n this.value = obj[0];\n this.highValue = obj[1];\n }\n else {\n this.value = obj;\n }\n // ngOnChanges() is not called in this instance, so we need to communicate the change manually\n this.inputModelChangeSubject.next({\n value: this.value,\n highValue: this.highValue,\n forceChange: false,\n internalChange: false,\n });\n }\n // ControlValueAccessor interface\n registerOnChange(onChangeCallback) {\n this.onChangeCallback = onChangeCallback;\n }\n // ControlValueAccessor interface\n registerOnTouched(onTouchedCallback) {\n this.onTouchedCallback = onTouchedCallback;\n }\n // ControlValueAccessor interface\n setDisabledState(isDisabled) {\n this.viewOptions.disabled = isDisabled;\n this.updateDisabledState();\n }\n setAriaLabel(ariaLabel) {\n this.viewOptions.ariaLabel = ariaLabel;\n this.updateAriaLabel();\n }\n onResize(event) {\n this.calculateViewDimensionsAndDetectChanges();\n }\n subscribeInputModelChangeSubject() {\n this.inputModelChangeSubscription = this.inputModelChangeSubject\n .pipe(distinctUntilChanged(ModelChange.compare), \n // Hack to reset the status of the distinctUntilChanged() - if a \"fake\" event comes through with forceChange=true,\n // we forcefully by-pass distinctUntilChanged(), but otherwise drop the event\n filter((modelChange) => !modelChange.forceChange && !modelChange.internalChange))\n .subscribe((modelChange) => this.applyInputModelChange(modelChange));\n }\n subscribeOutputModelChangeSubject() {\n this.outputModelChangeSubscription = this.outputModelChangeSubject\n .pipe(distinctUntilChanged(ModelChange.compare))\n .subscribe((modelChange) => this.publishOutputModelChange(modelChange));\n }\n subscribeResizeObserver() {\n if (CompatibilityHelper.isResizeObserverAvailable()) {\n this.resizeObserver = new ResizeObserver(() => this.calculateViewDimensionsAndDetectChanges());\n this.resizeObserver.observe(this.elementRef.nativeElement);\n }\n }\n unsubscribeResizeObserver() {\n if (CompatibilityHelper.isResizeObserverAvailable() &&\n this.resizeObserver !== null) {\n this.resizeObserver.disconnect();\n this.resizeObserver = null;\n }\n }\n unsubscribeOnMove() {\n if (!ValueHelper.isNullOrUndefined(this.onMoveEventListener)) {\n this.eventListenerHelper.detachEventListener(this.onMoveEventListener);\n this.onMoveEventListener = null;\n }\n }\n unsubscribeOnEnd() {\n if (!ValueHelper.isNullOrUndefined(this.onEndEventListener)) {\n this.eventListenerHelper.detachEventListener(this.onEndEventListener);\n this.onEndEventListener = null;\n }\n }\n unsubscribeInputModelChangeSubject() {\n if (!ValueHelper.isNullOrUndefined(this.inputModelChangeSubscription)) {\n this.inputModelChangeSubscription.unsubscribe();\n this.inputModelChangeSubscription = null;\n }\n }\n unsubscribeOutputModelChangeSubject() {\n if (!ValueHelper.isNullOrUndefined(this.outputModelChangeSubscription)) {\n this.outputModelChangeSubscription.unsubscribe();\n this.outputModelChangeSubscription = null;\n }\n }\n unsubscribeManualRefresh() {\n if (!ValueHelper.isNullOrUndefined(this.manualRefreshSubscription)) {\n this.manualRefreshSubscription.unsubscribe();\n this.manualRefreshSubscription = null;\n }\n }\n unsubscribeTriggerFocus() {\n if (!ValueHelper.isNullOrUndefined(this.triggerFocusSubscription)) {\n this.triggerFocusSubscription.unsubscribe();\n this.triggerFocusSubscription = null;\n }\n }\n getPointerElement(pointerType) {\n if (pointerType === PointerType.Min) {\n return this.minHandleElement;\n }\n else if (pointerType === PointerType.Max) {\n return this.maxHandleElement;\n }\n return null;\n }\n getCurrentTrackingValue() {\n if (this.currentTrackingPointer === PointerType.Min) {\n return this.viewLowValue;\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n return this.viewHighValue;\n }\n return null;\n }\n modelValueToViewValue(modelValue) {\n if (ValueHelper.isNullOrUndefined(modelValue)) {\n return NaN;\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray) &&\n !this.viewOptions.bindIndexForStepsArray) {\n return ValueHelper.findStepIndex(+modelValue, this.viewOptions.stepsArray);\n }\n return +modelValue;\n }\n viewValueToModelValue(viewValue) {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray) &&\n !this.viewOptions.bindIndexForStepsArray) {\n return this.getStepValue(viewValue);\n }\n return viewValue;\n }\n getStepValue(sliderValue) {\n const step = this.viewOptions.stepsArray[sliderValue];\n return !ValueHelper.isNullOrUndefined(step) ? step.value : NaN;\n }\n applyViewChange() {\n this.value = this.viewValueToModelValue(this.viewLowValue);\n if (this.range) {\n this.highValue = this.viewValueToModelValue(this.viewHighValue);\n }\n this.outputModelChangeSubject.next({\n value: this.value,\n highValue: this.highValue,\n userEventInitiated: true,\n forceChange: false,\n });\n // At this point all changes are applied and outputs are emitted, so we should be done.\n // However, input changes are communicated in different stream and we need to be ready to\n // act on the next input change even if it is exactly the same as last input change.\n // Therefore, we send a special event to reset the stream.\n this.inputModelChangeSubject.next({\n value: this.value,\n highValue: this.highValue,\n forceChange: false,\n internalChange: true,\n });\n }\n // Apply model change to the slider view\n applyInputModelChange(modelChange) {\n const normalisedModelChange = this.normaliseModelValues(modelChange);\n // If normalised model change is different, apply the change to the model values\n const normalisationChange = !ModelValues.compare(modelChange, normalisedModelChange);\n if (normalisationChange) {\n this.value = normalisedModelChange.value;\n this.highValue = normalisedModelChange.highValue;\n }\n this.viewLowValue = this.modelValueToViewValue(normalisedModelChange.value);\n if (this.range) {\n this.viewHighValue = this.modelValueToViewValue(normalisedModelChange.highValue);\n }\n else {\n this.viewHighValue = null;\n }\n this.updateLowHandle(this.valueToPosition(this.viewLowValue));\n if (this.range) {\n this.updateHighHandle(this.valueToPosition(this.viewHighValue));\n }\n this.updateSelectionBar();\n this.updateTicksScale();\n this.updateAriaAttributes();\n if (this.range) {\n this.updateCombinedLabel();\n }\n // At the end, we need to communicate the model change to the outputs as well\n // Normalisation changes are also always forced out to ensure that subscribers always end up in correct state\n this.outputModelChangeSubject.next({\n value: normalisedModelChange.value,\n highValue: normalisedModelChange.highValue,\n forceChange: normalisationChange,\n userEventInitiated: false,\n });\n }\n // Publish model change to output event emitters and registered callbacks\n publishOutputModelChange(modelChange) {\n const emitOutputs = () => {\n this.valueChange.emit(modelChange.value);\n if (this.range) {\n this.highValueChange.emit(modelChange.highValue);\n }\n if (!ValueHelper.isNullOrUndefined(this.onChangeCallback)) {\n if (this.range) {\n this.onChangeCallback([modelChange.value, modelChange.highValue]);\n }\n else {\n this.onChangeCallback(modelChange.value);\n }\n }\n if (!ValueHelper.isNullOrUndefined(this.onTouchedCallback)) {\n if (this.range) {\n this.onTouchedCallback([modelChange.value, modelChange.highValue]);\n }\n else {\n this.onTouchedCallback(modelChange.value);\n }\n }\n };\n if (modelChange.userEventInitiated) {\n // If this change was initiated by a user event, we can emit outputs in the same tick\n emitOutputs();\n this.userChange.emit(this.getChangeContext());\n }\n else {\n // But, if the change was initated by something else like a change in input bindings,\n // we need to wait until next tick to emit the outputs to keep Angular change detection happy\n setTimeout(() => {\n emitOutputs();\n });\n }\n }\n normaliseModelValues(input) {\n const normalisedInput = new ModelValues();\n normalisedInput.value = input.value;\n normalisedInput.highValue = input.highValue;\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray)) {\n // When using steps array, only round to nearest step in the array\n // No other enforcement can be done, as the step array may be out of order, and that is perfectly fine\n if (this.viewOptions.enforceStepsArray) {\n const valueIndex = ValueHelper.findStepIndex(normalisedInput.value, this.viewOptions.stepsArray);\n normalisedInput.value = this.viewOptions.stepsArray[valueIndex].value;\n if (this.range) {\n const highValueIndex = ValueHelper.findStepIndex(normalisedInput.highValue, this.viewOptions.stepsArray);\n normalisedInput.highValue =\n this.viewOptions.stepsArray[highValueIndex].value;\n }\n }\n return normalisedInput;\n }\n if (this.viewOptions.enforceStep) {\n normalisedInput.value = this.roundStep(normalisedInput.value);\n if (this.range) {\n normalisedInput.highValue = this.roundStep(normalisedInput.highValue);\n }\n }\n if (this.viewOptions.enforceRange) {\n normalisedInput.value = MathHelper.clampToRange(normalisedInput.value, this.viewOptions.floor, this.viewOptions.ceil);\n if (this.range) {\n normalisedInput.highValue = MathHelper.clampToRange(normalisedInput.highValue, this.viewOptions.floor, this.viewOptions.ceil);\n }\n // Make sure that range slider invariant (value <= highValue) is always satisfied\n if (this.range && input.value > input.highValue) {\n // We know that both values are now clamped correctly, they may just be in the wrong order\n // So the easy solution is to swap them... except swapping is sometimes disabled in options, so we make the two values the same\n if (this.viewOptions.noSwitching) {\n normalisedInput.value = normalisedInput.highValue;\n }\n else {\n const tempValue = input.value;\n normalisedInput.value = input.highValue;\n normalisedInput.highValue = tempValue;\n }\n }\n }\n return normalisedInput;\n }\n renormaliseModelValues() {\n const previousModelValues = {\n value: this.value,\n highValue: this.highValue,\n };\n const normalisedModelValues = this.normaliseModelValues(previousModelValues);\n if (!ModelValues.compare(normalisedModelValues, previousModelValues)) {\n this.value = normalisedModelValues.value;\n this.highValue = normalisedModelValues.highValue;\n this.outputModelChangeSubject.next({\n value: this.value,\n highValue: this.highValue,\n forceChange: true,\n userEventInitiated: false,\n });\n }\n }\n onChangeOptions() {\n if (!this.initHasRun) {\n return;\n }\n const previousOptionsInfluencingEventBindings = this.getOptionsInfluencingEventBindings(this.viewOptions);\n this.applyOptions();\n const newOptionsInfluencingEventBindings = this.getOptionsInfluencingEventBindings(this.viewOptions);\n // Avoid re-binding events in case nothing changes that can influence it\n // It makes it possible to change options while dragging the slider\n const rebindEvents = !ValueHelper.areArraysEqual(previousOptionsInfluencingEventBindings, newOptionsInfluencingEventBindings);\n // With new options, we need to re-normalise model values if necessary\n this.renormaliseModelValues();\n this.viewLowValue = this.modelValueToViewValue(this.value);\n if (this.range) {\n this.viewHighValue = this.modelValueToViewValue(this.highValue);\n }\n else {\n this.viewHighValue = null;\n }\n this.resetSlider(rebindEvents);\n }\n // Read the user options and apply them to the slider model\n applyOptions() {\n this.viewOptions = new Options();\n Object.assign(this.viewOptions, this.options);\n this.viewOptions.draggableRange =\n this.range && this.viewOptions.draggableRange;\n this.viewOptions.draggableRangeOnly =\n this.range && this.viewOptions.draggableRangeOnly;\n if (this.viewOptions.draggableRangeOnly) {\n this.viewOptions.draggableRange = true;\n }\n this.viewOptions.showTicks =\n this.viewOptions.showTicks ||\n this.viewOptions.showTicksValues ||\n !ValueHelper.isNullOrUndefined(this.viewOptions.ticksArray);\n if (this.viewOptions.showTicks &&\n (!ValueHelper.isNullOrUndefined(this.viewOptions.tickStep) ||\n !ValueHelper.isNullOrUndefined(this.viewOptions.ticksArray))) {\n this.intermediateTicks = true;\n }\n this.viewOptions.showSelectionBar =\n this.viewOptions.showSelectionBar ||\n this.viewOptions.showSelectionBarEnd ||\n !ValueHelper.isNullOrUndefined(this.viewOptions.showSelectionBarFromValue);\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray)) {\n this.applyStepsArrayOptions();\n }\n else {\n this.applyFloorCeilOptions();\n }\n if (ValueHelper.isNullOrUndefined(this.viewOptions.combineLabels)) {\n this.viewOptions.combineLabels = (minValue, maxValue) => {\n return minValue + ' - ' + maxValue;\n };\n }\n if (this.viewOptions.logScale && this.viewOptions.floor === 0) {\n throw Error(\"Can't use floor=0 with logarithmic scale\");\n }\n }\n applyStepsArrayOptions() {\n this.viewOptions.floor = 0;\n this.viewOptions.ceil = this.viewOptions.stepsArray.length - 1;\n this.viewOptions.step = 1;\n if (ValueHelper.isNullOrUndefined(this.viewOptions.translate)) {\n this.viewOptions.translate = (modelValue) => {\n if (this.viewOptions.bindIndexForStepsArray) {\n return String(this.getStepValue(modelValue));\n }\n return String(modelValue);\n };\n }\n }\n applyFloorCeilOptions() {\n if (ValueHelper.isNullOrUndefined(this.viewOptions.step)) {\n this.viewOptions.step = 1;\n }\n else {\n this.viewOptions.step = +this.viewOptions.step;\n if (this.viewOptions.step <= 0) {\n this.viewOptions.step = 1;\n }\n }\n if (ValueHelper.isNullOrUndefined(this.viewOptions.ceil) ||\n ValueHelper.isNullOrUndefined(this.viewOptions.floor)) {\n throw Error('floor and ceil options must be supplied');\n }\n this.viewOptions.ceil = +this.viewOptions.ceil;\n this.viewOptions.floor = +this.viewOptions.floor;\n if (ValueHelper.isNullOrUndefined(this.viewOptions.translate)) {\n this.viewOptions.translate = (value) => String(value);\n }\n }\n // Resets slider\n resetSlider(rebindEvents = true) {\n this.manageElementsStyle();\n this.addAccessibility();\n this.updateCeilLabel();\n this.updateFloorLabel();\n if (rebindEvents) {\n this.unbindEvents();\n this.manageEventsBindings();\n }\n this.updateDisabledState();\n this.updateAriaLabel();\n this.calculateViewDimensions();\n this.refocusPointerIfNeeded();\n }\n // Sets focus on the specified pointer\n focusPointer(pointerType) {\n // If not supplied, use min pointer as default\n if (pointerType !== PointerType.Min && pointerType !== PointerType.Max) {\n pointerType = PointerType.Min;\n }\n if (pointerType === PointerType.Min) {\n this.minHandleElement.focus();\n }\n else if (this.range && pointerType === PointerType.Max) {\n this.maxHandleElement.focus();\n }\n }\n refocusPointerIfNeeded() {\n if (!ValueHelper.isNullOrUndefined(this.currentFocusPointer)) {\n const element = this.getPointerElement(this.currentFocusPointer);\n element.focusIfNeeded();\n }\n }\n // Update each elements style based on options\n manageElementsStyle() {\n this.updateScale();\n this.floorLabelElement.setAlwaysHide(this.viewOptions.showTicksValues || this.viewOptions.hideLimitLabels);\n this.ceilLabelElement.setAlwaysHide(this.viewOptions.showTicksValues || this.viewOptions.hideLimitLabels);\n const hideLabelsForTicks = this.viewOptions.showTicksValues && !this.intermediateTicks;\n this.minHandleLabelElement.setAlwaysHide(hideLabelsForTicks || this.viewOptions.hidePointerLabels);\n this.maxHandleLabelElement.setAlwaysHide(hideLabelsForTicks || !this.range || this.viewOptions.hidePointerLabels);\n this.combinedLabelElement.setAlwaysHide(hideLabelsForTicks || !this.range || this.viewOptions.hidePointerLabels);\n this.selectionBarElement.setAlwaysHide(!this.range && !this.viewOptions.showSelectionBar);\n this.leftOuterSelectionBarElement.setAlwaysHide(!this.range || !this.viewOptions.showOuterSelectionBars);\n this.rightOuterSelectionBarElement.setAlwaysHide(!this.range || !this.viewOptions.showOuterSelectionBars);\n this.fullBarTransparentClass =\n this.range && this.viewOptions.showOuterSelectionBars;\n this.selectionBarDraggableClass =\n this.viewOptions.draggableRange && !this.viewOptions.onlyBindHandles;\n this.ticksUnderValuesClass =\n this.intermediateTicks && this.options.showTicksValues;\n if (this.sliderElementVerticalClass !== this.viewOptions.vertical) {\n this.updateVerticalState();\n // The above change in host component class will not be applied until the end of this cycle\n // However, functions calculating the slider position expect the slider to be already styled as vertical\n // So as a workaround, we need to reset the slider once again to compute the correct values\n setTimeout(() => {\n this.resetSlider();\n });\n }\n // Changing animate class may interfere with slider reset/initialisation, so we should set it separately,\n // after all is properly set up\n if (this.sliderElementAnimateClass !== this.viewOptions.animate) {\n setTimeout(() => {\n this.sliderElementAnimateClass = this.viewOptions.animate;\n });\n }\n this.updateRotate();\n }\n // Manage the events bindings based on readOnly and disabled options\n manageEventsBindings() {\n if (this.viewOptions.disabled || this.viewOptions.readOnly) {\n this.unbindEvents();\n }\n else {\n this.bindEvents();\n }\n }\n // Set the disabled state based on disabled option\n updateDisabledState() {\n this.sliderElementDisabledAttr = this.viewOptions.disabled\n ? 'disabled'\n : null;\n }\n // Set the aria-label state based on ariaLabel option\n updateAriaLabel() {\n this.sliderElementAriaLabel = this.viewOptions.ariaLabel || 'nxg-slider';\n }\n // Set vertical state based on vertical option\n updateVerticalState() {\n this.sliderElementVerticalClass = this.viewOptions.vertical;\n for (const element of this.getAllSliderElements()) {\n // This is also called before ngAfterInit, so need to check that view child bindings work\n if (!ValueHelper.isNullOrUndefined(element)) {\n element.setVertical(this.viewOptions.vertical);\n }\n }\n }\n updateScale() {\n for (const element of this.getAllSliderElements()) {\n element.setScale(this.viewOptions.scale);\n }\n }\n updateRotate() {\n for (const element of this.getAllSliderElements()) {\n element.setRotate(this.viewOptions.rotate);\n }\n }\n getAllSliderElements() {\n return [\n this.leftOuterSelectionBarElement,\n this.rightOuterSelectionBarElement,\n this.fullBarElement,\n this.selectionBarElement,\n this.minHandleElement,\n this.maxHandleElement,\n this.floorLabelElement,\n this.ceilLabelElement,\n this.minHandleLabelElement,\n this.maxHandleLabelElement,\n this.combinedLabelElement,\n this.ticksElement,\n ];\n }\n // Initialize slider handles positions and labels\n // Run only once during initialization and every time view port changes size\n initHandles() {\n this.updateLowHandle(this.valueToPosition(this.viewLowValue));\n /*\n the order here is important since the selection bar should be\n updated after the high handle but before the combined label\n */\n if (this.range) {\n this.updateHighHandle(this.valueToPosition(this.viewHighValue));\n }\n this.updateSelectionBar();\n if (this.range) {\n this.updateCombinedLabel();\n }\n this.updateTicksScale();\n }\n // Adds accessibility attributes, run only once during initialization\n addAccessibility() {\n this.updateAriaAttributes();\n this.minHandleElement.role = 'slider';\n if (this.viewOptions.keyboardSupport &&\n !(this.viewOptions.readOnly || this.viewOptions.disabled)) {\n this.minHandleElement.tabindex = '0';\n }\n else {\n this.minHandleElement.tabindex = '';\n }\n this.minHandleElement.ariaOrientation =\n this.viewOptions.vertical || this.viewOptions.rotate !== 0\n ? 'vertical'\n : 'horizontal';\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.ariaLabel)) {\n this.minHandleElement.ariaLabel = this.viewOptions.ariaLabel;\n }\n else if (!ValueHelper.isNullOrUndefined(this.viewOptions.ariaLabelledBy)) {\n this.minHandleElement.ariaLabelledBy = this.viewOptions.ariaLabelledBy;\n }\n if (this.range) {\n this.maxHandleElement.role = 'slider';\n if (this.viewOptions.keyboardSupport &&\n !(this.viewOptions.readOnly || this.viewOptions.disabled)) {\n this.maxHandleElement.tabindex = '0';\n }\n else {\n this.maxHandleElement.tabindex = '';\n }\n this.maxHandleElement.ariaOrientation =\n this.viewOptions.vertical || this.viewOptions.rotate !== 0\n ? 'vertical'\n : 'horizontal';\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.ariaLabelHigh)) {\n this.maxHandleElement.ariaLabel = this.viewOptions.ariaLabelHigh;\n }\n else if (!ValueHelper.isNullOrUndefined(this.viewOptions.ariaLabelledByHigh)) {\n this.maxHandleElement.ariaLabelledBy =\n this.viewOptions.ariaLabelledByHigh;\n }\n }\n }\n // Updates aria attributes according to current values\n updateAriaAttributes() {\n this.minHandleElement.ariaValueNow = (+this.value).toString();\n this.minHandleElement.ariaValueText = this.viewOptions.translate(+this.value, LabelType.Low);\n this.minHandleElement.ariaValueMin = this.viewOptions.floor.toString();\n this.minHandleElement.ariaValueMax = this.viewOptions.ceil.toString();\n if (this.range) {\n this.maxHandleElement.ariaValueNow = (+this.highValue).toString();\n this.maxHandleElement.ariaValueText = this.viewOptions.translate(+this.highValue, LabelType.High);\n this.maxHandleElement.ariaValueMin = this.viewOptions.floor.toString();\n this.maxHandleElement.ariaValueMax = this.viewOptions.ceil.toString();\n }\n }\n // Calculate dimensions that are dependent on view port size\n // Run once during initialization and every time view port changes size.\n calculateViewDimensions() {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.handleDimension)) {\n this.minHandleElement.setDimension(this.viewOptions.handleDimension);\n }\n else {\n this.minHandleElement.calculateDimension();\n }\n const handleWidth = this.minHandleElement.dimension;\n this.handleHalfDimension = handleWidth / 2;\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.barDimension)) {\n this.fullBarElement.setDimension(this.viewOptions.barDimension);\n }\n else {\n this.fullBarElement.calculateDimension();\n }\n this.maxHandlePosition = this.fullBarElement.dimension - handleWidth;\n if (this.initHasRun) {\n this.updateFloorLabel();\n this.updateCeilLabel();\n this.initHandles();\n }\n }\n calculateViewDimensionsAndDetectChanges() {\n this.calculateViewDimensions();\n if (!this.isRefDestroyed()) {\n this.changeDetectionRef.detectChanges();\n }\n }\n /**\n * If the slider reference is already destroyed\n * @returns boolean - true if ref is destroyed\n */\n isRefDestroyed() {\n return this.changeDetectionRef['destroyed'];\n }\n // Update the ticks position\n updateTicksScale() {\n if (!this.viewOptions.showTicks && this.sliderElementWithLegendClass) {\n setTimeout(() => {\n this.sliderElementWithLegendClass = false;\n });\n return;\n }\n const ticksArray = !ValueHelper.isNullOrUndefined(this.viewOptions.ticksArray)\n ? this.viewOptions.ticksArray\n : this.getTicksArray();\n const translate = this.viewOptions.vertical\n ? 'translateY'\n : 'translateX';\n if (this.viewOptions.rightToLeft) {\n ticksArray.reverse();\n }\n const tickValueStep = !ValueHelper.isNullOrUndefined(this.viewOptions.tickValueStep)\n ? this.viewOptions.tickValueStep\n : !ValueHelper.isNullOrUndefined(this.viewOptions.tickStep)\n ? this.viewOptions.tickStep\n : this.viewOptions.step;\n let hasAtLeastOneLegend = false;\n const newTicks = ticksArray.map((value) => {\n let position = this.valueToPosition(value);\n if (this.viewOptions.vertical) {\n position = this.maxHandlePosition - position;\n }\n const translation = translate + '(' + Math.round(position) + 'px)';\n const tick = new Tick();\n tick.selected = this.isTickSelected(value);\n tick.style = {\n '-webkit-transform': translation,\n '-moz-transform': translation,\n '-o-transform': translation,\n '-ms-transform': translation,\n transform: translation,\n };\n if (tick.selected &&\n !ValueHelper.isNullOrUndefined(this.viewOptions.getSelectionBarColor)) {\n tick.style['background-color'] = this.getSelectionBarColor();\n }\n if (!tick.selected &&\n !ValueHelper.isNullOrUndefined(this.viewOptions.getTickColor)) {\n tick.style['background-color'] = this.getTickColor(value);\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.ticksTooltip)) {\n tick.tooltip = this.viewOptions.ticksTooltip(value);\n tick.tooltipPlacement = this.viewOptions.vertical ? 'right' : 'top';\n }\n if (this.viewOptions.showTicksValues &&\n !ValueHelper.isNullOrUndefined(tickValueStep) &&\n MathHelper.isModuloWithinPrecisionLimit(value, tickValueStep, this.viewOptions.precisionLimit)) {\n tick.value = this.getDisplayValue(value, LabelType.TickValue);\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.ticksValuesTooltip)) {\n tick.valueTooltip = this.viewOptions.ticksValuesTooltip(value);\n tick.valueTooltipPlacement = this.viewOptions.vertical\n ? 'right'\n : 'top';\n }\n }\n let legend = null;\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray)) {\n const step = this.viewOptions.stepsArray[value];\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.getStepLegend)) {\n legend = this.viewOptions.getStepLegend(step);\n }\n else if (!ValueHelper.isNullOrUndefined(step)) {\n legend = step.legend;\n }\n }\n else if (!ValueHelper.isNullOrUndefined(this.viewOptions.getLegend)) {\n legend = this.viewOptions.getLegend(value);\n }\n if (!ValueHelper.isNullOrUndefined(legend)) {\n tick.legend = legend;\n hasAtLeastOneLegend = true;\n }\n return tick;\n });\n if (this.sliderElementWithLegendClass !== hasAtLeastOneLegend) {\n setTimeout(() => {\n this.sliderElementWithLegendClass = hasAtLeastOneLegend;\n });\n }\n // We should avoid re-creating the ticks array if possible\n // This both improves performance and makes CSS animations work correctly\n if (!ValueHelper.isNullOrUndefined(this.ticks) &&\n this.ticks.length === newTicks.length) {\n for (let i = 0; i < newTicks.length; ++i) {\n Object.assign(this.ticks[i], newTicks[i]);\n }\n }\n else {\n this.ticks = newTicks;\n if (!this.isRefDestroyed()) {\n this.changeDetectionRef.detectChanges();\n }\n }\n }\n getTicksArray() {\n if (!this.viewOptions.showTicks) {\n return [];\n }\n const step = !ValueHelper.isNullOrUndefined(this.viewOptions.tickStep)\n ? this.viewOptions.tickStep\n : this.viewOptions.step;\n const ticksArray = [];\n const numberOfValues = 1 +\n Math.floor(MathHelper.roundToPrecisionLimit(Math.abs(this.viewOptions.ceil - this.viewOptions.floor) / step, this.viewOptions.precisionLimit));\n for (let index = 0; index < numberOfValues; ++index) {\n ticksArray.push(MathHelper.roundToPrecisionLimit(this.viewOptions.floor + step * index, this.viewOptions.precisionLimit));\n }\n return ticksArray;\n }\n isTickSelected(value) {\n if (!this.range) {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.showSelectionBarFromValue)) {\n const center = this.viewOptions.showSelectionBarFromValue;\n if (this.viewLowValue > center &&\n value >= center &&\n value <= this.viewLowValue) {\n return true;\n }\n else if (this.viewLowValue < center &&\n value <= center &&\n value >= this.viewLowValue) {\n return true;\n }\n }\n else if (this.viewOptions.showSelectionBarEnd) {\n if (value >= this.viewLowValue) {\n return true;\n }\n }\n else if (this.viewOptions.showSelectionBar &&\n value <= this.viewLowValue) {\n return true;\n }\n }\n if (this.range &&\n value >= this.viewLowValue &&\n value <= this.viewHighValue) {\n return true;\n }\n return false;\n }\n // Update position of the floor label\n updateFloorLabel() {\n if (!this.floorLabelElement.alwaysHide) {\n this.floorLabelElement.setValue(this.getDisplayValue(this.viewOptions.floor, LabelType.Floor));\n this.floorLabelElement.calculateDimension();\n const position = this.viewOptions.rightToLeft\n ? this.fullBarElement.dimension - this.floorLabelElement.dimension\n : 0;\n this.floorLabelElement.setPosition(position);\n }\n }\n // Update position of the ceiling label\n updateCeilLabel() {\n if (!this.ceilLabelElement.alwaysHide) {\n this.ceilLabelElement.setValue(this.getDisplayValue(this.viewOptions.ceil, LabelType.Ceil));\n this.ceilLabelElement.calculateDimension();\n const position = this.viewOptions.rightToLeft\n ? 0\n : this.fullBarElement.dimension - this.ceilLabelElement.dimension;\n this.ceilLabelElement.setPosition(position);\n }\n }\n // Update slider handles and label positions\n updateHandles(which, newPos) {\n if (which === PointerType.Min) {\n this.updateLowHandle(newPos);\n }\n else if (which === PointerType.Max) {\n this.updateHighHandle(newPos);\n }\n this.updateSelectionBar();\n this.updateTicksScale();\n if (this.range) {\n this.updateCombinedLabel();\n }\n }\n // Helper function to work out the position for handle labels depending on RTL or not\n getHandleLabelPos(labelType, newPos) {\n const labelDimension = labelType === PointerType.Min\n ? this.minHandleLabelElement.dimension\n : this.maxHandleLabelElement.dimension;\n const nearHandlePos = newPos - labelDimension / 2 + this.handleHalfDimension;\n const endOfBarPos = this.fullBarElement.dimension - labelDimension;\n if (!this.viewOptions.boundPointerLabels) {\n return nearHandlePos;\n }\n if ((this.viewOptions.rightToLeft && labelType === PointerType.Min) ||\n (!this.viewOptions.rightToLeft && labelType === PointerType.Max)) {\n return Math.min(nearHandlePos, endOfBarPos);\n }\n else {\n return Math.min(Math.max(nearHandlePos, 0), endOfBarPos);\n }\n }\n // Update low slider handle position and label\n updateLowHandle(newPos) {\n this.minHandleElement.setPosition(newPos);\n this.minHandleLabelElement.setValue(this.getDisplayValue(this.viewLowValue, LabelType.Low));\n this.minHandleLabelElement.setPosition(this.getHandleLabelPos(PointerType.Min, newPos));\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.getPointerColor)) {\n this.minPointerStyle = {\n backgroundColor: this.getPointerColor(PointerType.Min),\n };\n }\n if (this.viewOptions.autoHideLimitLabels) {\n this.updateFloorAndCeilLabelsVisibility();\n }\n }\n // Update high slider handle position and label\n updateHighHandle(newPos) {\n this.maxHandleElement.setPosition(newPos);\n this.maxHandleLabelElement.setValue(this.getDisplayValue(this.viewHighValue, LabelType.High));\n this.maxHandleLabelElement.setPosition(this.getHandleLabelPos(PointerType.Max, newPos));\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.getPointerColor)) {\n this.maxPointerStyle = {\n backgroundColor: this.getPointerColor(PointerType.Max),\n };\n }\n if (this.viewOptions.autoHideLimitLabels) {\n this.updateFloorAndCeilLabelsVisibility();\n }\n }\n // Show/hide floor/ceiling label\n updateFloorAndCeilLabelsVisibility() {\n // Show based only on hideLimitLabels if pointer labels are hidden\n if (this.viewOptions.hidePointerLabels) {\n return;\n }\n let floorLabelHidden = false;\n let ceilLabelHidden = false;\n const isMinLabelAtFloor = this.isLabelBelowFloorLabel(this.minHandleLabelElement);\n const isMinLabelAtCeil = this.isLabelAboveCeilLabel(this.minHandleLabelElement);\n const isMaxLabelAtCeil = this.isLabelAboveCeilLabel(this.maxHandleLabelElement);\n const isCombinedLabelAtFloor = this.isLabelBelowFloorLabel(this.combinedLabelElement);\n const isCombinedLabelAtCeil = this.isLabelAboveCeilLabel(this.combinedLabelElement);\n if (isMinLabelAtFloor) {\n floorLabelHidden = true;\n this.floorLabelElement.hide();\n }\n else {\n floorLabelHidden = false;\n this.floorLabelElement.show();\n }\n if (isMinLabelAtCeil) {\n ceilLabelHidden = true;\n this.ceilLabelElement.hide();\n }\n else {\n ceilLabelHidden = false;\n this.ceilLabelElement.show();\n }\n if (this.range) {\n const hideCeil = this.combinedLabelElement.isVisible()\n ? isCombinedLabelAtCeil\n : isMaxLabelAtCeil;\n const hideFloor = this.combinedLabelElement.isVisible()\n ? isCombinedLabelAtFloor\n : isMinLabelAtFloor;\n if (hideCeil) {\n this.ceilLabelElement.hide();\n }\n else if (!ceilLabelHidden) {\n this.ceilLabelElement.show();\n }\n // Hide or show floor label\n if (hideFloor) {\n this.floorLabelElement.hide();\n }\n else if (!floorLabelHidden) {\n this.floorLabelElement.show();\n }\n }\n }\n isLabelBelowFloorLabel(label) {\n const pos = label.position;\n const dim = label.dimension;\n const floorPos = this.floorLabelElement.position;\n const floorDim = this.floorLabelElement.dimension;\n return this.viewOptions.rightToLeft\n ? pos + dim >= floorPos - 2\n : pos <= floorPos + floorDim + 2;\n }\n isLabelAboveCeilLabel(label) {\n const pos = label.position;\n const dim = label.dimension;\n const ceilPos = this.ceilLabelElement.position;\n const ceilDim = this.ceilLabelElement.dimension;\n return this.viewOptions.rightToLeft\n ? pos <= ceilPos + ceilDim + 2\n : pos + dim >= ceilPos - 2;\n }\n // Update slider selection bar, combined label and range label\n updateSelectionBar() {\n let position = 0;\n let dimension = 0;\n const isSelectionBarFromRight = this.viewOptions.rightToLeft\n ? !this.viewOptions.showSelectionBarEnd\n : this.viewOptions.showSelectionBarEnd;\n const positionForRange = this.viewOptions.rightToLeft\n ? this.maxHandleElement.position + this.handleHalfDimension\n : this.minHandleElement.position + this.handleHalfDimension;\n if (this.range) {\n dimension = Math.abs(this.maxHandleElement.position - this.minHandleElement.position);\n position = positionForRange;\n }\n else {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.showSelectionBarFromValue)) {\n const center = this.viewOptions.showSelectionBarFromValue;\n const centerPosition = this.valueToPosition(center);\n const isModelGreaterThanCenter = this.viewOptions.rightToLeft\n ? this.viewLowValue <= center\n : this.viewLowValue > center;\n if (isModelGreaterThanCenter) {\n dimension = this.minHandleElement.position - centerPosition;\n position = centerPosition + this.handleHalfDimension;\n }\n else {\n dimension = centerPosition - this.minHandleElement.position;\n position = this.minHandleElement.position + this.handleHalfDimension;\n }\n }\n else if (isSelectionBarFromRight) {\n dimension = Math.ceil(Math.abs(this.maxHandlePosition - this.minHandleElement.position) +\n this.handleHalfDimension);\n position = Math.floor(this.minHandleElement.position + this.handleHalfDimension);\n }\n else {\n dimension = this.minHandleElement.position + this.handleHalfDimension;\n position = 0;\n }\n }\n this.selectionBarElement.setDimension(dimension);\n this.selectionBarElement.setPosition(position);\n if (this.range && this.viewOptions.showOuterSelectionBars) {\n if (this.viewOptions.rightToLeft) {\n this.rightOuterSelectionBarElement.setDimension(position);\n this.rightOuterSelectionBarElement.setPosition(0);\n this.fullBarElement.calculateDimension();\n this.leftOuterSelectionBarElement.setDimension(this.fullBarElement.dimension - (position + dimension));\n this.leftOuterSelectionBarElement.setPosition(position + dimension);\n }\n else {\n this.leftOuterSelectionBarElement.setDimension(position);\n this.leftOuterSelectionBarElement.setPosition(0);\n this.fullBarElement.calculateDimension();\n this.rightOuterSelectionBarElement.setDimension(this.fullBarElement.dimension - (position + dimension));\n this.rightOuterSelectionBarElement.setPosition(position + dimension);\n }\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.getSelectionBarColor)) {\n const color = this.getSelectionBarColor();\n this.barStyle = {\n backgroundColor: color,\n };\n }\n else if (!ValueHelper.isNullOrUndefined(this.viewOptions.selectionBarGradient)) {\n const offset = !ValueHelper.isNullOrUndefined(this.viewOptions.showSelectionBarFromValue)\n ? this.valueToPosition(this.viewOptions.showSelectionBarFromValue)\n : 0;\n const reversed = (offset - position > 0 && !isSelectionBarFromRight) ||\n (offset - position <= 0 && isSelectionBarFromRight);\n const direction = this.viewOptions.vertical\n ? reversed\n ? 'bottom'\n : 'top'\n : reversed\n ? 'left'\n : 'right';\n this.barStyle = {\n backgroundImage: 'linear-gradient(to ' +\n direction +\n ', ' +\n this.viewOptions.selectionBarGradient.from +\n ' 0%,' +\n this.viewOptions.selectionBarGradient.to +\n ' 100%)',\n };\n if (this.viewOptions.vertical) {\n this.barStyle.backgroundPosition =\n 'center ' +\n (offset +\n dimension +\n position +\n (reversed ? -this.handleHalfDimension : 0)) +\n 'px';\n this.barStyle.backgroundSize =\n '100% ' +\n (this.fullBarElement.dimension - this.handleHalfDimension) +\n 'px';\n }\n else {\n this.barStyle.backgroundPosition =\n offset -\n position +\n (reversed ? this.handleHalfDimension : 0) +\n 'px center';\n this.barStyle.backgroundSize =\n this.fullBarElement.dimension - this.handleHalfDimension + 'px 100%';\n }\n }\n }\n // Wrapper around the getSelectionBarColor of the user to pass to correct parameters\n getSelectionBarColor() {\n if (this.range) {\n return this.viewOptions.getSelectionBarColor(this.value, this.highValue);\n }\n return this.viewOptions.getSelectionBarColor(this.value);\n }\n // Wrapper around the getPointerColor of the user to pass to correct parameters\n getPointerColor(pointerType) {\n if (pointerType === PointerType.Max) {\n return this.viewOptions.getPointerColor(this.highValue, pointerType);\n }\n return this.viewOptions.getPointerColor(this.value, pointerType);\n }\n // Wrapper around the getTickColor of the user to pass to correct parameters\n getTickColor(value) {\n return this.viewOptions.getTickColor(value);\n }\n // Update combined label position and value\n updateCombinedLabel() {\n let isLabelOverlap = null;\n if (this.viewOptions.rightToLeft) {\n isLabelOverlap =\n this.minHandleLabelElement.position -\n this.minHandleLabelElement.dimension -\n 10 <=\n this.maxHandleLabelElement.position;\n }\n else {\n isLabelOverlap =\n this.minHandleLabelElement.position +\n this.minHandleLabelElement.dimension +\n 10 >=\n this.maxHandleLabelElement.position;\n }\n if (isLabelOverlap) {\n const lowDisplayValue = this.getDisplayValue(this.viewLowValue, LabelType.Low);\n const highDisplayValue = this.getDisplayValue(this.viewHighValue, LabelType.High);\n const combinedLabelValue = this.viewOptions.rightToLeft\n ? this.viewOptions.combineLabels(highDisplayValue, lowDisplayValue)\n : this.viewOptions.combineLabels(lowDisplayValue, highDisplayValue);\n this.combinedLabelElement.setValue(combinedLabelValue);\n const pos = this.viewOptions.boundPointerLabels\n ? Math.min(Math.max(this.selectionBarElement.position +\n this.selectionBarElement.dimension / 2 -\n this.combinedLabelElement.dimension / 2, 0), this.fullBarElement.dimension - this.combinedLabelElement.dimension)\n : this.selectionBarElement.position +\n this.selectionBarElement.dimension / 2 -\n this.combinedLabelElement.dimension / 2;\n this.combinedLabelElement.setPosition(pos);\n this.minHandleLabelElement.hide();\n this.maxHandleLabelElement.hide();\n this.combinedLabelElement.show();\n }\n else {\n this.updateHighHandle(this.valueToPosition(this.viewHighValue));\n this.updateLowHandle(this.valueToPosition(this.viewLowValue));\n this.maxHandleLabelElement.show();\n this.minHandleLabelElement.show();\n this.combinedLabelElement.hide();\n }\n if (this.viewOptions.autoHideLimitLabels) {\n this.updateFloorAndCeilLabelsVisibility();\n }\n }\n // Return the translated value if a translate function is provided else the original value\n getDisplayValue(value, which) {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.stepsArray) &&\n !this.viewOptions.bindIndexForStepsArray) {\n value = this.getStepValue(value);\n }\n return this.viewOptions.translate(value, which);\n }\n // Round value to step and precision based on minValue\n roundStep(value, customStep) {\n const step = !ValueHelper.isNullOrUndefined(customStep)\n ? customStep\n : this.viewOptions.step;\n let steppedDifference = MathHelper.roundToPrecisionLimit((value - this.viewOptions.floor) / step, this.viewOptions.precisionLimit);\n steppedDifference = Math.round(steppedDifference) * step;\n return MathHelper.roundToPrecisionLimit(this.viewOptions.floor + steppedDifference, this.viewOptions.precisionLimit);\n }\n // Translate value to pixel position\n valueToPosition(val) {\n let fn = ValueHelper.linearValueToPosition;\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.customValueToPosition)) {\n fn = this.viewOptions.customValueToPosition;\n }\n else if (this.viewOptions.logScale) {\n fn = ValueHelper.logValueToPosition;\n }\n val = MathHelper.clampToRange(val, this.viewOptions.floor, this.viewOptions.ceil);\n let percent = fn(val, this.viewOptions.floor, this.viewOptions.ceil);\n if (ValueHelper.isNullOrUndefined(percent)) {\n percent = 0;\n }\n if (this.viewOptions.rightToLeft) {\n percent = 1 - percent;\n }\n return percent * this.maxHandlePosition;\n }\n // Translate position to model value\n positionToValue(position) {\n let percent = position / this.maxHandlePosition;\n if (this.viewOptions.rightToLeft) {\n percent = 1 - percent;\n }\n let fn = ValueHelper.linearPositionToValue;\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.customPositionToValue)) {\n fn = this.viewOptions.customPositionToValue;\n }\n else if (this.viewOptions.logScale) {\n fn = ValueHelper.logPositionToValue;\n }\n const value = fn(percent, this.viewOptions.floor, this.viewOptions.ceil);\n return !ValueHelper.isNullOrUndefined(value) ? value : 0;\n }\n // Get the X-coordinate or Y-coordinate of an event\n getEventXY(event, targetTouchId) {\n if (event instanceof MouseEvent) {\n return this.viewOptions.vertical || this.viewOptions.rotate !== 0\n ? event.clientY\n : event.clientX;\n }\n let touchIndex = 0;\n const touches = event.touches;\n if (!ValueHelper.isNullOrUndefined(targetTouchId)) {\n for (let i = 0; i < touches.length; i++) {\n if (touches[i].identifier === targetTouchId) {\n touchIndex = i;\n break;\n }\n }\n }\n // Return the target touch or if the target touch was not found in the event\n // returns the coordinates of the first touch\n return this.viewOptions.vertical || this.viewOptions.rotate !== 0\n ? touches[touchIndex].clientY\n : touches[touchIndex].clientX;\n }\n // Compute the event position depending on whether the slider is horizontal or vertical\n getEventPosition(event, targetTouchId) {\n const sliderElementBoundingRect = this.elementRef.nativeElement.getBoundingClientRect();\n const sliderPos = this.viewOptions.vertical || this.viewOptions.rotate !== 0\n ? sliderElementBoundingRect.bottom\n : sliderElementBoundingRect.left;\n let eventPos = 0;\n if (this.viewOptions.vertical || this.viewOptions.rotate !== 0) {\n eventPos = -this.getEventXY(event, targetTouchId) + sliderPos;\n }\n else {\n eventPos = this.getEventXY(event, targetTouchId) - sliderPos;\n }\n return eventPos * this.viewOptions.scale - this.handleHalfDimension;\n }\n // Get the handle closest to an event\n getNearestHandle(event) {\n if (!this.range) {\n return PointerType.Min;\n }\n const position = this.getEventPosition(event);\n const distanceMin = Math.abs(position - this.minHandleElement.position);\n const distanceMax = Math.abs(position - this.maxHandleElement.position);\n if (distanceMin < distanceMax) {\n return PointerType.Min;\n }\n else if (distanceMin > distanceMax) {\n return PointerType.Max;\n }\n else if (!this.viewOptions.rightToLeft) {\n // if event is at the same distance from min/max then if it's at left of minH, we return minH else maxH\n return position < this.minHandleElement.position\n ? PointerType.Min\n : PointerType.Max;\n }\n // reverse in rtl\n return position > this.minHandleElement.position\n ? PointerType.Min\n : PointerType.Max;\n }\n // Bind mouse and touch events to slider handles\n bindEvents() {\n const draggableRange = this.viewOptions.draggableRange;\n if (!this.viewOptions.onlyBindHandles) {\n this.selectionBarElement.on('mousedown', (event) => this.onBarStart(null, draggableRange, event, true, true, true));\n }\n if (this.viewOptions.draggableRangeOnly) {\n this.minHandleElement.on('mousedown', (event) => this.onBarStart(PointerType.Min, draggableRange, event, true, true));\n this.maxHandleElement.on('mousedown', (event) => this.onBarStart(PointerType.Max, draggableRange, event, true, true));\n }\n else {\n this.minHandleElement.on('mousedown', (event) => this.onStart(PointerType.Min, event, true, true));\n if (this.range) {\n this.maxHandleElement.on('mousedown', (event) => this.onStart(PointerType.Max, event, true, true));\n }\n if (!this.viewOptions.onlyBindHandles) {\n this.fullBarElement.on('mousedown', (event) => this.onStart(null, event, true, true, true));\n this.ticksElement.on('mousedown', (event) => this.onStart(null, event, true, true, true, true));\n }\n }\n if (!this.viewOptions.onlyBindHandles) {\n this.selectionBarElement.onPassive('touchstart', (event) => this.onBarStart(null, draggableRange, event, true, true, true));\n }\n if (this.viewOptions.draggableRangeOnly) {\n this.minHandleElement.onPassive('touchstart', (event) => this.onBarStart(PointerType.Min, draggableRange, event, true, true));\n this.maxHandleElement.onPassive('touchstart', (event) => this.onBarStart(PointerType.Max, draggableRange, event, true, true));\n }\n else {\n this.minHandleElement.onPassive('touchstart', (event) => this.onStart(PointerType.Min, event, true, true));\n if (this.range) {\n this.maxHandleElement.onPassive('touchstart', (event) => this.onStart(PointerType.Max, event, true, true));\n }\n if (!this.viewOptions.onlyBindHandles) {\n this.fullBarElement.onPassive('touchstart', (event) => this.onStart(null, event, true, true, true));\n this.ticksElement.onPassive('touchstart', (event) => this.onStart(null, event, false, false, true, true));\n }\n }\n if (this.viewOptions.keyboardSupport) {\n this.minHandleElement.on('focus', () => this.onPointerFocus(PointerType.Min));\n if (this.range) {\n this.maxHandleElement.on('focus', () => this.onPointerFocus(PointerType.Max));\n }\n }\n }\n getOptionsInfluencingEventBindings(options) {\n return [\n options.disabled,\n options.readOnly,\n options.draggableRange,\n options.draggableRangeOnly,\n options.onlyBindHandles,\n options.keyboardSupport,\n ];\n }\n // Unbind mouse and touch events to slider handles\n unbindEvents() {\n this.unsubscribeOnMove();\n this.unsubscribeOnEnd();\n for (const element of this.getAllSliderElements()) {\n if (!ValueHelper.isNullOrUndefined(element)) {\n element.off();\n }\n }\n }\n onBarStart(pointerType, draggableRange, event, bindMove, bindEnd, simulateImmediateMove, simulateImmediateEnd) {\n if (draggableRange) {\n this.onDragStart(pointerType, event, bindMove, bindEnd);\n }\n else {\n this.onStart(pointerType, event, bindMove, bindEnd, simulateImmediateMove, simulateImmediateEnd);\n }\n }\n // onStart event handler\n onStart(pointerType, event, bindMove, bindEnd, simulateImmediateMove, simulateImmediateEnd) {\n event.stopPropagation();\n // Only call preventDefault() when handling non-passive events (passive events don't need it)\n if (!CompatibilityHelper.isTouchEvent(event) && !supportsPassiveEvents) {\n event.preventDefault();\n }\n this.moving = false;\n // We have to do this in case the HTML where the sliders are on\n // have been animated into view.\n this.calculateViewDimensions();\n if (ValueHelper.isNullOrUndefined(pointerType)) {\n pointerType = this.getNearestHandle(event);\n }\n this.currentTrackingPointer = pointerType;\n const pointerElement = this.getPointerElement(pointerType);\n pointerElement.active = true;\n if (this.viewOptions.keyboardSupport) {\n pointerElement.focus();\n }\n if (bindMove) {\n this.unsubscribeOnMove();\n const onMoveCallback = (e) => (this.dragging.active ? this.onDragMove(e) : this.onMove(e));\n if (CompatibilityHelper.isTouchEvent(event)) {\n this.onMoveEventListener =\n this.eventListenerHelper.attachPassiveEventListener(document, 'touchmove', onMoveCallback);\n }\n else {\n this.onMoveEventListener = this.eventListenerHelper.attachEventListener(document, 'mousemove', onMoveCallback);\n }\n }\n if (bindEnd) {\n this.unsubscribeOnEnd();\n const onEndCallback = (e) => this.onEnd(e);\n if (CompatibilityHelper.isTouchEvent(event)) {\n this.onEndEventListener =\n this.eventListenerHelper.attachPassiveEventListener(document, 'touchend', onEndCallback);\n }\n else {\n this.onEndEventListener = this.eventListenerHelper.attachEventListener(document, 'mouseup', onEndCallback);\n }\n }\n this.userChangeStart.emit(this.getChangeContext());\n if (CompatibilityHelper.isTouchEvent(event) &&\n !ValueHelper.isNullOrUndefined(event.changedTouches)) {\n // Store the touch identifier\n if (ValueHelper.isNullOrUndefined(this.touchId)) {\n this.touchId = event.changedTouches[0].identifier;\n }\n }\n // Click events, either with mouse or touch gesture are weird. Sometimes they result in full\n // start, move, end sequence, and sometimes, they don't - they only invoke mousedown\n // As a workaround, we simulate the first move event and the end event if it's necessary\n if (simulateImmediateMove) {\n this.onMove(event, true);\n }\n if (simulateImmediateEnd) {\n this.onEnd(event);\n }\n }\n // onMove event handler\n onMove(event, fromTick) {\n let touchForThisSlider = null;\n if (CompatibilityHelper.isTouchEvent(event)) {\n const changedTouches = event.changedTouches;\n for (let i = 0; i < changedTouches.length; i++) {\n if (changedTouches[i].identifier === this.touchId) {\n touchForThisSlider = changedTouches[i];\n break;\n }\n }\n if (ValueHelper.isNullOrUndefined(touchForThisSlider)) {\n return;\n }\n }\n if (this.viewOptions.animate && !this.viewOptions.animateOnMove) {\n if (this.moving) {\n this.sliderElementAnimateClass = false;\n }\n }\n this.moving = true;\n const newPos = !ValueHelper.isNullOrUndefined(touchForThisSlider)\n ? this.getEventPosition(event, touchForThisSlider.identifier)\n : this.getEventPosition(event);\n let newValue;\n const ceilValue = this.viewOptions.rightToLeft\n ? this.viewOptions.floor\n : this.viewOptions.ceil;\n const floorValue = this.viewOptions.rightToLeft\n ? this.viewOptions.ceil\n : this.viewOptions.floor;\n if (newPos <= 0) {\n newValue = floorValue;\n }\n else if (newPos >= this.maxHandlePosition) {\n newValue = ceilValue;\n }\n else {\n newValue = this.positionToValue(newPos);\n if (fromTick &&\n !ValueHelper.isNullOrUndefined(this.viewOptions.tickStep)) {\n newValue = this.roundStep(newValue, this.viewOptions.tickStep);\n }\n else {\n newValue = this.roundStep(newValue);\n }\n }\n this.positionTrackingHandle(newValue);\n }\n onEnd(event) {\n if (CompatibilityHelper.isTouchEvent(event)) {\n const changedTouches = event.changedTouches;\n if (changedTouches[0].identifier !== this.touchId) {\n return;\n }\n }\n this.moving = false;\n if (this.viewOptions.animate) {\n this.sliderElementAnimateClass = true;\n }\n this.touchId = null;\n if (!this.viewOptions.keyboardSupport) {\n this.minHandleElement.active = false;\n this.maxHandleElement.active = false;\n this.currentTrackingPointer = null;\n }\n this.dragging.active = false;\n this.unsubscribeOnMove();\n this.unsubscribeOnEnd();\n this.userChangeEnd.emit(this.getChangeContext());\n }\n onPointerFocus(pointerType) {\n const pointerElement = this.getPointerElement(pointerType);\n pointerElement.on('blur', () => this.onPointerBlur(pointerElement));\n pointerElement.on('keydown', (event) => this.onKeyboardEvent(event));\n pointerElement.on('keyup', () => this.onKeyUp());\n pointerElement.active = true;\n this.currentTrackingPointer = pointerType;\n this.currentFocusPointer = pointerType;\n this.firstKeyDown = true;\n }\n onKeyUp() {\n this.firstKeyDown = true;\n this.userChangeEnd.emit(this.getChangeContext());\n }\n onPointerBlur(pointer) {\n pointer.off('blur');\n pointer.off('keydown');\n pointer.off('keyup');\n pointer.active = false;\n if (ValueHelper.isNullOrUndefined(this.touchId)) {\n this.currentTrackingPointer = null;\n this.currentFocusPointer = null;\n }\n }\n getKeyActions(currentValue) {\n const valueRange = this.viewOptions.ceil - this.viewOptions.floor;\n let increaseStep = currentValue + this.viewOptions.step;\n let decreaseStep = currentValue - this.viewOptions.step;\n let increasePage = currentValue + valueRange / 10;\n let decreasePage = currentValue - valueRange / 10;\n if (this.viewOptions.reversedControls) {\n increaseStep = currentValue - this.viewOptions.step;\n decreaseStep = currentValue + this.viewOptions.step;\n increasePage = currentValue - valueRange / 10;\n decreasePage = currentValue + valueRange / 10;\n }\n // Left to right default actions\n const actions = {\n UP: increaseStep,\n DOWN: decreaseStep,\n LEFT: decreaseStep,\n RIGHT: increaseStep,\n PAGEUP: increasePage,\n PAGEDOWN: decreasePage,\n HOME: this.viewOptions.reversedControls\n ? this.viewOptions.ceil\n : this.viewOptions.floor,\n END: this.viewOptions.reversedControls\n ? this.viewOptions.floor\n : this.viewOptions.ceil,\n };\n // right to left means swapping right and left arrows\n if (this.viewOptions.rightToLeft) {\n actions.LEFT = increaseStep;\n actions.RIGHT = decreaseStep;\n // right to left and vertical means we also swap up and down\n if (this.viewOptions.vertical || this.viewOptions.rotate !== 0) {\n actions.UP = decreaseStep;\n actions.DOWN = increaseStep;\n }\n }\n return actions;\n }\n onKeyboardEvent(event) {\n const currentValue = this.getCurrentTrackingValue();\n const keyCode = !ValueHelper.isNullOrUndefined(event.keyCode)\n ? event.keyCode\n : event.which;\n const keys = {\n 38: 'UP',\n 40: 'DOWN',\n 37: 'LEFT',\n 39: 'RIGHT',\n 33: 'PAGEUP',\n 34: 'PAGEDOWN',\n 36: 'HOME',\n 35: 'END',\n };\n const actions = this.getKeyActions(currentValue);\n const key = keys[keyCode];\n const action = actions[key];\n if (ValueHelper.isNullOrUndefined(action) ||\n ValueHelper.isNullOrUndefined(this.currentTrackingPointer)) {\n return;\n }\n event.preventDefault();\n if (this.firstKeyDown) {\n this.firstKeyDown = false;\n this.userChangeStart.emit(this.getChangeContext());\n }\n const actionValue = MathHelper.clampToRange(action, this.viewOptions.floor, this.viewOptions.ceil);\n const newValue = this.roundStep(actionValue);\n if (!this.viewOptions.draggableRangeOnly) {\n this.positionTrackingHandle(newValue);\n }\n else {\n const difference = this.viewHighValue - this.viewLowValue;\n let newMinValue;\n let newMaxValue;\n if (this.currentTrackingPointer === PointerType.Min) {\n newMinValue = newValue;\n newMaxValue = newValue + difference;\n if (newMaxValue > this.viewOptions.ceil) {\n newMaxValue = this.viewOptions.ceil;\n newMinValue = newMaxValue - difference;\n }\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n newMaxValue = newValue;\n newMinValue = newValue - difference;\n if (newMinValue < this.viewOptions.floor) {\n newMinValue = this.viewOptions.floor;\n newMaxValue = newMinValue + difference;\n }\n }\n this.positionTrackingBar(newMinValue, newMaxValue);\n }\n }\n // onDragStart event handler, handles dragging of the middle bar\n onDragStart(pointerType, event, bindMove, bindEnd) {\n const position = this.getEventPosition(event);\n this.dragging = new Dragging();\n this.dragging.active = true;\n this.dragging.value = this.positionToValue(position);\n this.dragging.difference = this.viewHighValue - this.viewLowValue;\n this.dragging.lowLimit = this.viewOptions.rightToLeft\n ? this.minHandleElement.position - position\n : position - this.minHandleElement.position;\n this.dragging.highLimit = this.viewOptions.rightToLeft\n ? position - this.maxHandleElement.position\n : this.maxHandleElement.position - position;\n this.onStart(pointerType, event, bindMove, bindEnd);\n }\n /** Get min value depending on whether the newPos is outOfBounds above or below the bar and rightToLeft */\n getMinValue(newPos, outOfBounds, isAbove) {\n const isRTL = this.viewOptions.rightToLeft;\n let value = null;\n if (outOfBounds) {\n if (isAbove) {\n value = isRTL\n ? this.viewOptions.floor\n : this.viewOptions.ceil - this.dragging.difference;\n }\n else {\n value = isRTL\n ? this.viewOptions.ceil - this.dragging.difference\n : this.viewOptions.floor;\n }\n }\n else {\n value = isRTL\n ? this.positionToValue(newPos + this.dragging.lowLimit)\n : this.positionToValue(newPos - this.dragging.lowLimit);\n }\n return this.roundStep(value);\n }\n /** Get max value depending on whether the newPos is outOfBounds above or below the bar and rightToLeft */\n getMaxValue(newPos, outOfBounds, isAbove) {\n const isRTL = this.viewOptions.rightToLeft;\n let value = null;\n if (outOfBounds) {\n if (isAbove) {\n value = isRTL\n ? this.viewOptions.floor + this.dragging.difference\n : this.viewOptions.ceil;\n }\n else {\n value = isRTL\n ? this.viewOptions.ceil\n : this.viewOptions.floor + this.dragging.difference;\n }\n }\n else {\n if (isRTL) {\n value =\n this.positionToValue(newPos + this.dragging.lowLimit) +\n this.dragging.difference;\n }\n else {\n value =\n this.positionToValue(newPos - this.dragging.lowLimit) +\n this.dragging.difference;\n }\n }\n return this.roundStep(value);\n }\n onDragMove(event) {\n const newPos = this.getEventPosition(event);\n if (this.viewOptions.animate && !this.viewOptions.animateOnMove) {\n if (this.moving) {\n this.sliderElementAnimateClass = false;\n }\n }\n this.moving = true;\n let ceilLimit, floorLimit, floorHandleElement, ceilHandleElement;\n if (this.viewOptions.rightToLeft) {\n ceilLimit = this.dragging.lowLimit;\n floorLimit = this.dragging.highLimit;\n floorHandleElement = this.maxHandleElement;\n ceilHandleElement = this.minHandleElement;\n }\n else {\n ceilLimit = this.dragging.highLimit;\n floorLimit = this.dragging.lowLimit;\n floorHandleElement = this.minHandleElement;\n ceilHandleElement = this.maxHandleElement;\n }\n const isUnderFloorLimit = newPos <= floorLimit;\n const isOverCeilLimit = newPos >= this.maxHandlePosition - ceilLimit;\n let newMinValue;\n let newMaxValue;\n if (isUnderFloorLimit) {\n if (floorHandleElement.position === 0) {\n return;\n }\n newMinValue = this.getMinValue(newPos, true, false);\n newMaxValue = this.getMaxValue(newPos, true, false);\n }\n else if (isOverCeilLimit) {\n if (ceilHandleElement.position === this.maxHandlePosition) {\n return;\n }\n newMaxValue = this.getMaxValue(newPos, true, true);\n newMinValue = this.getMinValue(newPos, true, true);\n }\n else {\n newMinValue = this.getMinValue(newPos, false, false);\n newMaxValue = this.getMaxValue(newPos, false, false);\n }\n this.positionTrackingBar(newMinValue, newMaxValue);\n }\n // Set the new value and position for the entire bar\n positionTrackingBar(newMinValue, newMaxValue) {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.minLimit) &&\n newMinValue < this.viewOptions.minLimit) {\n newMinValue = this.viewOptions.minLimit;\n newMaxValue = MathHelper.roundToPrecisionLimit(newMinValue + this.dragging.difference, this.viewOptions.precisionLimit);\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.maxLimit) &&\n newMaxValue > this.viewOptions.maxLimit) {\n newMaxValue = this.viewOptions.maxLimit;\n newMinValue = MathHelper.roundToPrecisionLimit(newMaxValue - this.dragging.difference, this.viewOptions.precisionLimit);\n }\n this.viewLowValue = newMinValue;\n this.viewHighValue = newMaxValue;\n this.applyViewChange();\n this.updateHandles(PointerType.Min, this.valueToPosition(newMinValue));\n this.updateHandles(PointerType.Max, this.valueToPosition(newMaxValue));\n }\n // Set the new value and position to the current tracking handle\n positionTrackingHandle(newValue) {\n newValue = this.applyMinMaxLimit(newValue);\n if (this.range) {\n if (this.viewOptions.pushRange) {\n newValue = this.applyPushRange(newValue);\n }\n else {\n if (this.viewOptions.noSwitching) {\n if (this.currentTrackingPointer === PointerType.Min &&\n newValue > this.viewHighValue) {\n newValue = this.applyMinMaxRange(this.viewHighValue);\n }\n else if (this.currentTrackingPointer === PointerType.Max &&\n newValue < this.viewLowValue) {\n newValue = this.applyMinMaxRange(this.viewLowValue);\n }\n }\n newValue = this.applyMinMaxRange(newValue);\n /* This is to check if we need to switch the min and max handles */\n if (this.currentTrackingPointer === PointerType.Min &&\n newValue > this.viewHighValue) {\n this.viewLowValue = this.viewHighValue;\n this.applyViewChange();\n this.updateHandles(PointerType.Min, this.maxHandleElement.position);\n this.updateAriaAttributes();\n this.currentTrackingPointer = PointerType.Max;\n this.minHandleElement.active = false;\n this.maxHandleElement.active = true;\n if (this.viewOptions.keyboardSupport) {\n this.maxHandleElement.focus();\n }\n }\n else if (this.currentTrackingPointer === PointerType.Max &&\n newValue < this.viewLowValue) {\n this.viewHighValue = this.viewLowValue;\n this.applyViewChange();\n this.updateHandles(PointerType.Max, this.minHandleElement.position);\n this.updateAriaAttributes();\n this.currentTrackingPointer = PointerType.Min;\n this.maxHandleElement.active = false;\n this.minHandleElement.active = true;\n if (this.viewOptions.keyboardSupport) {\n this.minHandleElement.focus();\n }\n }\n }\n }\n if (this.getCurrentTrackingValue() !== newValue) {\n if (this.currentTrackingPointer === PointerType.Min) {\n this.viewLowValue = newValue;\n this.applyViewChange();\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n this.viewHighValue = newValue;\n this.applyViewChange();\n }\n this.updateHandles(this.currentTrackingPointer, this.valueToPosition(newValue));\n this.updateAriaAttributes();\n }\n }\n applyMinMaxLimit(newValue) {\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.minLimit) &&\n newValue < this.viewOptions.minLimit) {\n return this.viewOptions.minLimit;\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.maxLimit) &&\n newValue > this.viewOptions.maxLimit) {\n return this.viewOptions.maxLimit;\n }\n return newValue;\n }\n applyMinMaxRange(newValue) {\n const oppositeValue = this.currentTrackingPointer === PointerType.Min\n ? this.viewHighValue\n : this.viewLowValue;\n const difference = Math.abs(newValue - oppositeValue);\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.minRange)) {\n if (difference < this.viewOptions.minRange) {\n if (this.currentTrackingPointer === PointerType.Min) {\n return MathHelper.roundToPrecisionLimit(this.viewHighValue - this.viewOptions.minRange, this.viewOptions.precisionLimit);\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n return MathHelper.roundToPrecisionLimit(this.viewLowValue + this.viewOptions.minRange, this.viewOptions.precisionLimit);\n }\n }\n }\n if (!ValueHelper.isNullOrUndefined(this.viewOptions.maxRange)) {\n if (difference > this.viewOptions.maxRange) {\n if (this.currentTrackingPointer === PointerType.Min) {\n return MathHelper.roundToPrecisionLimit(this.viewHighValue - this.viewOptions.maxRange, this.viewOptions.precisionLimit);\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n return MathHelper.roundToPrecisionLimit(this.viewLowValue + this.viewOptions.maxRange, this.viewOptions.precisionLimit);\n }\n }\n }\n return newValue;\n }\n applyPushRange(newValue) {\n const difference = this.currentTrackingPointer === PointerType.Min\n ? this.viewHighValue - newValue\n : newValue - this.viewLowValue;\n const minRange = !ValueHelper.isNullOrUndefined(this.viewOptions.minRange)\n ? this.viewOptions.minRange\n : this.viewOptions.step;\n const maxRange = this.viewOptions.maxRange;\n // if smaller than minRange\n if (difference < minRange) {\n if (this.currentTrackingPointer === PointerType.Min) {\n this.viewHighValue = MathHelper.roundToPrecisionLimit(Math.min(newValue + minRange, this.viewOptions.ceil), this.viewOptions.precisionLimit);\n newValue = MathHelper.roundToPrecisionLimit(this.viewHighValue - minRange, this.viewOptions.precisionLimit);\n this.applyViewChange();\n this.updateHandles(PointerType.Max, this.valueToPosition(this.viewHighValue));\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n this.viewLowValue = MathHelper.roundToPrecisionLimit(Math.max(newValue - minRange, this.viewOptions.floor), this.viewOptions.precisionLimit);\n newValue = MathHelper.roundToPrecisionLimit(this.viewLowValue + minRange, this.viewOptions.precisionLimit);\n this.applyViewChange();\n this.updateHandles(PointerType.Min, this.valueToPosition(this.viewLowValue));\n }\n this.updateAriaAttributes();\n }\n else if (!ValueHelper.isNullOrUndefined(maxRange) &&\n difference > maxRange) {\n // if greater than maxRange\n if (this.currentTrackingPointer === PointerType.Min) {\n this.viewHighValue = MathHelper.roundToPrecisionLimit(newValue + maxRange, this.viewOptions.precisionLimit);\n this.applyViewChange();\n this.updateHandles(PointerType.Max, this.valueToPosition(this.viewHighValue));\n }\n else if (this.currentTrackingPointer === PointerType.Max) {\n this.viewLowValue = MathHelper.roundToPrecisionLimit(newValue - maxRange, this.viewOptions.precisionLimit);\n this.applyViewChange();\n this.updateHandles(PointerType.Min, this.valueToPosition(this.viewLowValue));\n }\n this.updateAriaAttributes();\n }\n return newValue;\n }\n getChangeContext() {\n const changeContext = new ChangeContext();\n changeContext.pointerType = this.currentTrackingPointer;\n changeContext.value = +this.value;\n if (this.range) {\n changeContext.highValue = +this.highValue;\n }\n return changeContext;\n }\n static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.3\", ngImport: i0, type: SliderComponent, deps: [{ token: i0.Renderer2 }, { token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i0.NgZone }, { token: AllowUnsafeHtmlInSlider, optional: true }], target: i0.ɵɵFactoryTarget.Component });\n static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"17.1.3\", type: SliderComponent, selector: \"ngx-slider\", inputs: { value: \"value\", highValue: \"highValue\", options: \"options\", manualRefresh: \"manualRefresh\", triggerFocus: \"triggerFocus\" }, outputs: { valueChange: \"valueChange\", highValueChange: \"highValueChange\", userChangeStart: \"userChangeStart\", userChange: \"userChange\", userChangeEnd: \"userChangeEnd\" }, host: { listeners: { \"window:resize\": \"onResize($event)\" }, properties: { \"class.ngx-slider\": \"this.sliderElementNgxSliderClass\", \"class.vertical\": \"this.sliderElementVerticalClass\", \"class.animate\": \"this.sliderElementAnimateClass\", \"class.with-legend\": \"this.sliderElementWithLegendClass\", \"attr.disabled\": \"this.sliderElementDisabledAttr\", \"attr.aria-label\": \"this.sliderElementAriaLabel\" } }, providers: [NGX_SLIDER_CONTROL_VALUE_ACCESSOR], queries: [{ propertyName: \"tooltipTemplate\", first: true, predicate: [\"tooltipTemplate\"], descendants: true }], viewQueries: [{ propertyName: \"leftOuterSelectionBarElement\", first: true, predicate: [\"leftOuterSelectionBar\"], descendants: true, read: SliderElementDirective }, { propertyName: \"rightOuterSelectionBarElement\", first: true, predicate: [\"rightOuterSelectionBar\"], descendants: true, read: SliderElementDirective }, { propertyName: \"fullBarElement\", first: true, predicate: [\"fullBar\"], descendants: true, read: SliderElementDirective }, { propertyName: \"selectionBarElement\", first: true, predicate: [\"selectionBar\"], descendants: true, read: SliderElementDirective }, { propertyName: \"minHandleElement\", first: true, predicate: [\"minHandle\"], descendants: true, read: SliderHandleDirective }, { propertyName: \"maxHandleElement\", first: true, predicate: [\"maxHandle\"], descendants: true, read: SliderHandleDirective }, { propertyName: \"floorLabelElement\", first: true, predicate: [\"floorLabel\"], descendants: true, read: SliderLabelDirective }, { propertyName: \"ceilLabelElement\", first: true, predicate: [\"ceilLabel\"], descendants: true, read: SliderLabelDirective }, { propertyName: \"minHandleLabelElement\", first: true, predicate: [\"minHandleLabel\"], descendants: true, read: SliderLabelDirective }, { propertyName: \"maxHandleLabelElement\", first: true, predicate: [\"maxHandleLabel\"], descendants: true, read: SliderLabelDirective }, { propertyName: \"combinedLabelElement\", first: true, predicate: [\"combinedLabel\"], descendants: true, read: SliderLabelDirective }, { propertyName: \"ticksElement\", first: true, predicate: [\"ticksElement\"], descendants: true, read: SliderElementDirective }], usesOnChanges: true, ngImport: i0, template: \"\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n \\n \\n \\n \\n \\n \\n\", styles: [\"::ng-deep .ngx-slider{display:inline-block;position:relative;height:4px;width:100%;margin:35px 0 15px;vertical-align:middle;-webkit-user-select:none;user-select:none;touch-action:pan-y}::ng-deep .ngx-slider.with-legend{margin-bottom:40px}::ng-deep .ngx-slider[disabled]{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-pointer{cursor:not-allowed;background-color:#d8e0f3}::ng-deep .ngx-slider[disabled] .ngx-slider-draggable{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-selection{background:#8b91a2}::ng-deep .ngx-slider[disabled] .ngx-slider-tick{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-tick.ngx-slider-selected{background:#8b91a2}::ng-deep .ngx-slider .ngx-slider-span{white-space:nowrap;position:absolute;display:inline-block}::ng-deep .ngx-slider .ngx-slider-base{width:100%;height:100%;padding:0}::ng-deep .ngx-slider .ngx-slider-bar-wrapper{left:0;box-sizing:border-box;margin-top:-16px;padding-top:16px;width:100%;height:32px;z-index:1}::ng-deep .ngx-slider .ngx-slider-draggable{cursor:move}::ng-deep .ngx-slider .ngx-slider-bar{left:0;width:100%;height:4px;z-index:1;background:#d8e0f3;-webkit-border-radius:2px;-moz-border-radius:2px;border-radius:2px}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-transparent .ngx-slider-bar{background:transparent}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-left-out-selection .ngx-slider-bar{background:#df002d}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-right-out-selection .ngx-slider-bar{background:#03a688}::ng-deep .ngx-slider .ngx-slider-selection{z-index:2;background:#0db9f0;-webkit-border-radius:2px;-moz-border-radius:2px;border-radius:2px}::ng-deep .ngx-slider .ngx-slider-pointer{cursor:pointer;width:32px;height:32px;top:-14px;background-color:#0db9f0;z-index:3;-webkit-border-radius:16px;-moz-border-radius:16px;border-radius:16px}::ng-deep .ngx-slider .ngx-slider-pointer:after{content:\\\"\\\";width:8px;height:8px;position:absolute;top:12px;left:12px;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;background:#fff}::ng-deep .ngx-slider .ngx-slider-pointer:hover:after{background-color:#fff}::ng-deep .ngx-slider .ngx-slider-pointer.ngx-slider-active{z-index:4}::ng-deep .ngx-slider .ngx-slider-pointer.ngx-slider-active:after{background-color:#451aff}::ng-deep .ngx-slider .ngx-slider-bubble{cursor:default;bottom:16px;padding:1px 3px;color:#55637d;font-size:16px}::ng-deep .ngx-slider .ngx-slider-bubble.ngx-slider-limit{color:#55637d}::ng-deep .ngx-slider .ngx-slider-ticks{box-sizing:border-box;width:100%;height:0;position:absolute;left:0;top:-3px;margin:0;z-index:1;list-style:none}::ng-deep .ngx-slider .ngx-slider-ticks-values-under .ngx-slider-tick-value{top:auto;bottom:-36px}::ng-deep .ngx-slider .ngx-slider-tick{text-align:center;cursor:pointer;width:10px;height:10px;background:#d8e0f3;border-radius:50%;position:absolute;top:0;left:0;margin-left:11px}::ng-deep .ngx-slider .ngx-slider-tick.ngx-slider-selected{background:#0db9f0}::ng-deep .ngx-slider .ngx-slider-tick-value{position:absolute;top:-34px;transform:translate(-50%)}::ng-deep .ngx-slider .ngx-slider-tick-legend{position:absolute;top:24px;transform:translate(-50%);max-width:50px;white-space:normal}::ng-deep .ngx-slider.vertical{position:relative;width:4px;height:100%;margin:0 20px;padding:0;vertical-align:baseline;touch-action:pan-x}::ng-deep .ngx-slider.vertical .ngx-slider-base{width:100%;height:100%;padding:0}::ng-deep .ngx-slider.vertical .ngx-slider-bar-wrapper{top:auto;left:0;margin:0 0 0 -16px;padding:0 0 0 16px;height:100%;width:32px}::ng-deep .ngx-slider.vertical .ngx-slider-bar{bottom:0;left:auto;width:4px;height:100%}::ng-deep .ngx-slider.vertical .ngx-slider-pointer{left:-14px!important;top:auto;bottom:0}::ng-deep .ngx-slider.vertical .ngx-slider-bubble{left:16px!important;bottom:0}::ng-deep .ngx-slider.vertical .ngx-slider-ticks{height:100%;width:0;left:-3px;top:0;z-index:1}::ng-deep .ngx-slider.vertical .ngx-slider-tick{vertical-align:middle;margin-left:auto;margin-top:11px}::ng-deep .ngx-slider.vertical .ngx-slider-tick-value{left:24px;top:auto;transform:translateY(-28%)}::ng-deep .ngx-slider.vertical .ngx-slider-tick-legend{top:auto;right:24px;transform:translateY(-28%);max-width:none;white-space:nowrap}::ng-deep .ngx-slider.vertical .ngx-slider-ticks-values-under .ngx-slider-tick-value{bottom:auto;left:auto;right:24px}::ng-deep .ngx-slider *{transition:none}::ng-deep .ngx-slider.animate .ngx-slider-bar-wrapper{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-selection{transition:background-color linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-pointer{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-pointer:after{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble.ngx-slider-limit{transition:opacity linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble.ngx-slider-combined{transition:opacity linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-tick{transition:background-color linear .3s}\\n\"], dependencies: [{ kind: \"directive\", type: i1.NgClass, selector: \"[ngClass]\", inputs: [\"class\", \"ngClass\"] }, { kind: \"directive\", type: i1.NgForOf, selector: \"[ngFor][ngForOf]\", inputs: [\"ngForOf\", \"ngForTrackBy\", \"ngForTemplate\"] }, { kind: \"directive\", type: i1.NgIf, selector: \"[ngIf]\", inputs: [\"ngIf\", \"ngIfThen\", \"ngIfElse\"] }, { kind: \"directive\", type: i1.NgStyle, selector: \"[ngStyle]\", inputs: [\"ngStyle\"] }, { kind: \"directive\", type: SliderElementDirective, selector: \"[ngxSliderElement]\" }, { kind: \"directive\", type: SliderHandleDirective, selector: \"[ngxSliderHandle]\" }, { kind: \"directive\", type: SliderLabelDirective, selector: \"[ngxSliderLabel]\" }, { kind: \"component\", type: TooltipWrapperComponent, selector: \"ngx-slider-tooltip-wrapper\", inputs: [\"template\", \"tooltip\", \"placement\", \"content\"] }], changeDetection: i0.ChangeDetectionStrategy.Default });\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.3\", ngImport: i0, type: SliderComponent, decorators: [{\n type: Component,\n args: [{ selector: 'ngx-slider', providers: [NGX_SLIDER_CONTROL_VALUE_ACCESSOR], changeDetection: ChangeDetectionStrategy.Default, template: \"\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n \\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n \\n \\n \\n \\n \\n \\n\", styles: [\"::ng-deep .ngx-slider{display:inline-block;position:relative;height:4px;width:100%;margin:35px 0 15px;vertical-align:middle;-webkit-user-select:none;user-select:none;touch-action:pan-y}::ng-deep .ngx-slider.with-legend{margin-bottom:40px}::ng-deep .ngx-slider[disabled]{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-pointer{cursor:not-allowed;background-color:#d8e0f3}::ng-deep .ngx-slider[disabled] .ngx-slider-draggable{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-selection{background:#8b91a2}::ng-deep .ngx-slider[disabled] .ngx-slider-tick{cursor:not-allowed}::ng-deep .ngx-slider[disabled] .ngx-slider-tick.ngx-slider-selected{background:#8b91a2}::ng-deep .ngx-slider .ngx-slider-span{white-space:nowrap;position:absolute;display:inline-block}::ng-deep .ngx-slider .ngx-slider-base{width:100%;height:100%;padding:0}::ng-deep .ngx-slider .ngx-slider-bar-wrapper{left:0;box-sizing:border-box;margin-top:-16px;padding-top:16px;width:100%;height:32px;z-index:1}::ng-deep .ngx-slider .ngx-slider-draggable{cursor:move}::ng-deep .ngx-slider .ngx-slider-bar{left:0;width:100%;height:4px;z-index:1;background:#d8e0f3;-webkit-border-radius:2px;-moz-border-radius:2px;border-radius:2px}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-transparent .ngx-slider-bar{background:transparent}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-left-out-selection .ngx-slider-bar{background:#df002d}::ng-deep .ngx-slider .ngx-slider-bar-wrapper.ngx-slider-right-out-selection .ngx-slider-bar{background:#03a688}::ng-deep .ngx-slider .ngx-slider-selection{z-index:2;background:#0db9f0;-webkit-border-radius:2px;-moz-border-radius:2px;border-radius:2px}::ng-deep .ngx-slider .ngx-slider-pointer{cursor:pointer;width:32px;height:32px;top:-14px;background-color:#0db9f0;z-index:3;-webkit-border-radius:16px;-moz-border-radius:16px;border-radius:16px}::ng-deep .ngx-slider .ngx-slider-pointer:after{content:\\\"\\\";width:8px;height:8px;position:absolute;top:12px;left:12px;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;background:#fff}::ng-deep .ngx-slider .ngx-slider-pointer:hover:after{background-color:#fff}::ng-deep .ngx-slider .ngx-slider-pointer.ngx-slider-active{z-index:4}::ng-deep .ngx-slider .ngx-slider-pointer.ngx-slider-active:after{background-color:#451aff}::ng-deep .ngx-slider .ngx-slider-bubble{cursor:default;bottom:16px;padding:1px 3px;color:#55637d;font-size:16px}::ng-deep .ngx-slider .ngx-slider-bubble.ngx-slider-limit{color:#55637d}::ng-deep .ngx-slider .ngx-slider-ticks{box-sizing:border-box;width:100%;height:0;position:absolute;left:0;top:-3px;margin:0;z-index:1;list-style:none}::ng-deep .ngx-slider .ngx-slider-ticks-values-under .ngx-slider-tick-value{top:auto;bottom:-36px}::ng-deep .ngx-slider .ngx-slider-tick{text-align:center;cursor:pointer;width:10px;height:10px;background:#d8e0f3;border-radius:50%;position:absolute;top:0;left:0;margin-left:11px}::ng-deep .ngx-slider .ngx-slider-tick.ngx-slider-selected{background:#0db9f0}::ng-deep .ngx-slider .ngx-slider-tick-value{position:absolute;top:-34px;transform:translate(-50%)}::ng-deep .ngx-slider .ngx-slider-tick-legend{position:absolute;top:24px;transform:translate(-50%);max-width:50px;white-space:normal}::ng-deep .ngx-slider.vertical{position:relative;width:4px;height:100%;margin:0 20px;padding:0;vertical-align:baseline;touch-action:pan-x}::ng-deep .ngx-slider.vertical .ngx-slider-base{width:100%;height:100%;padding:0}::ng-deep .ngx-slider.vertical .ngx-slider-bar-wrapper{top:auto;left:0;margin:0 0 0 -16px;padding:0 0 0 16px;height:100%;width:32px}::ng-deep .ngx-slider.vertical .ngx-slider-bar{bottom:0;left:auto;width:4px;height:100%}::ng-deep .ngx-slider.vertical .ngx-slider-pointer{left:-14px!important;top:auto;bottom:0}::ng-deep .ngx-slider.vertical .ngx-slider-bubble{left:16px!important;bottom:0}::ng-deep .ngx-slider.vertical .ngx-slider-ticks{height:100%;width:0;left:-3px;top:0;z-index:1}::ng-deep .ngx-slider.vertical .ngx-slider-tick{vertical-align:middle;margin-left:auto;margin-top:11px}::ng-deep .ngx-slider.vertical .ngx-slider-tick-value{left:24px;top:auto;transform:translateY(-28%)}::ng-deep .ngx-slider.vertical .ngx-slider-tick-legend{top:auto;right:24px;transform:translateY(-28%);max-width:none;white-space:nowrap}::ng-deep .ngx-slider.vertical .ngx-slider-ticks-values-under .ngx-slider-tick-value{bottom:auto;left:auto;right:24px}::ng-deep .ngx-slider *{transition:none}::ng-deep .ngx-slider.animate .ngx-slider-bar-wrapper{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-selection{transition:background-color linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-pointer{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-pointer:after{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble{transition:all linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble.ngx-slider-limit{transition:opacity linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-bubble.ngx-slider-combined{transition:opacity linear .3s}::ng-deep .ngx-slider.animate .ngx-slider-tick{transition:background-color linear .3s}\\n\"] }]\n }], ctorParameters: () => [{ type: i0.Renderer2 }, { type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Inject,\n args: [AllowUnsafeHtmlInSlider]\n }, {\n type: Optional\n }] }], propDecorators: { sliderElementNgxSliderClass: [{\n type: HostBinding,\n args: ['class.ngx-slider']\n }], value: [{\n type: Input\n }], valueChange: [{\n type: Output\n }], highValue: [{\n type: Input\n }], highValueChange: [{\n type: Output\n }], options: [{\n type: Input\n }], userChangeStart: [{\n type: Output\n }], userChange: [{\n type: Output\n }], userChangeEnd: [{\n type: Output\n }], manualRefresh: [{\n type: Input\n }], triggerFocus: [{\n type: Input\n }], leftOuterSelectionBarElement: [{\n type: ViewChild,\n args: ['leftOuterSelectionBar', {\n read: SliderElementDirective,\n static: false,\n }]\n }], rightOuterSelectionBarElement: [{\n type: ViewChild,\n args: ['rightOuterSelectionBar', {\n read: SliderElementDirective,\n static: false,\n }]\n }], fullBarElement: [{\n type: ViewChild,\n args: ['fullBar', { read: SliderElementDirective, static: false }]\n }], selectionBarElement: [{\n type: ViewChild,\n args: ['selectionBar', { read: SliderElementDirective, static: false }]\n }], minHandleElement: [{\n type: ViewChild,\n args: ['minHandle', { read: SliderHandleDirective, static: false }]\n }], maxHandleElement: [{\n type: ViewChild,\n args: ['maxHandle', { read: SliderHandleDirective, static: false }]\n }], floorLabelElement: [{\n type: ViewChild,\n args: ['floorLabel', { read: SliderLabelDirective, static: false }]\n }], ceilLabelElement: [{\n type: ViewChild,\n args: ['ceilLabel', { read: SliderLabelDirective, static: false }]\n }], minHandleLabelElement: [{\n type: ViewChild,\n args: ['minHandleLabel', { read: SliderLabelDirective, static: false }]\n }], maxHandleLabelElement: [{\n type: ViewChild,\n args: ['maxHandleLabel', { read: SliderLabelDirective, static: false }]\n }], combinedLabelElement: [{\n type: ViewChild,\n args: ['combinedLabel', { read: SliderLabelDirective, static: false }]\n }], ticksElement: [{\n type: ViewChild,\n args: ['ticksElement', { read: SliderElementDirective, static: false }]\n }], tooltipTemplate: [{\n type: ContentChild,\n args: ['tooltipTemplate', { static: false }]\n }], sliderElementVerticalClass: [{\n type: HostBinding,\n args: ['class.vertical']\n }], sliderElementAnimateClass: [{\n type: HostBinding,\n args: ['class.animate']\n }], sliderElementWithLegendClass: [{\n type: HostBinding,\n args: ['class.with-legend']\n }], sliderElementDisabledAttr: [{\n type: HostBinding,\n args: ['attr.disabled']\n }], sliderElementAriaLabel: [{\n type: HostBinding,\n args: ['attr.aria-label']\n }], onResize: [{\n type: HostListener,\n args: ['window:resize', ['$event']]\n }] } });\n\n/**\n * NgxSlider module\n *\n * The module exports the slider component\n */\nclass NgxSliderModule {\n static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.3\", ngImport: i0, type: NgxSliderModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\n static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.1.3\", ngImport: i0, type: NgxSliderModule, declarations: [SliderComponent,\n SliderElementDirective,\n SliderHandleDirective,\n SliderLabelDirective,\n TooltipWrapperComponent], imports: [CommonModule], exports: [SliderComponent] });\n static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.1.3\", ngImport: i0, type: NgxSliderModule, imports: [CommonModule] });\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.3\", ngImport: i0, type: NgxSliderModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [\n CommonModule\n ],\n declarations: [\n SliderComponent,\n SliderElementDirective,\n SliderHandleDirective,\n SliderLabelDirective,\n TooltipWrapperComponent\n ],\n exports: [\n SliderComponent\n ]\n }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AllowUnsafeHtmlInSlider, ChangeContext, LabelType, NgxSliderModule, Options, PointerType, SliderComponent };\n","/**\n * @license Angular v17.3.12\n * (c) 2010-2024 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { DOCUMENT } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { inject, Injectable, ANIMATION_MODULE_TYPE, ViewEncapsulation, ɵRuntimeError, Inject } from '@angular/core';\n\n/**\n * @description Constants for the categories of parameters that can be defined for animations.\n *\n * A corresponding function defines a set of parameters for each category, and\n * collects them into a corresponding `AnimationMetadata` object.\n *\n * @publicApi\n */\nvar AnimationMetadataType;\n(function (AnimationMetadataType) {\n /**\n * Associates a named animation state with a set of CSS styles.\n * See [`state()`](api/animations/state)\n */\n AnimationMetadataType[AnimationMetadataType[\"State\"] = 0] = \"State\";\n /**\n * Data for a transition from one animation state to another.\n * See `transition()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Transition\"] = 1] = \"Transition\";\n /**\n * Contains a set of animation steps.\n * See `sequence()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Sequence\"] = 2] = \"Sequence\";\n /**\n * Contains a set of animation steps.\n * See `{@link animations/group group()}`\n */\n AnimationMetadataType[AnimationMetadataType[\"Group\"] = 3] = \"Group\";\n /**\n * Contains an animation step.\n * See `animate()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Animate\"] = 4] = \"Animate\";\n /**\n * Contains a set of animation steps.\n * See `keyframes()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Keyframes\"] = 5] = \"Keyframes\";\n /**\n * Contains a set of CSS property-value pairs into a named style.\n * See `style()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Style\"] = 6] = \"Style\";\n /**\n * Associates an animation with an entry trigger that can be attached to an element.\n * See `trigger()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Trigger\"] = 7] = \"Trigger\";\n /**\n * Contains a re-usable animation.\n * See `animation()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Reference\"] = 8] = \"Reference\";\n /**\n * Contains data to use in executing child animations returned by a query.\n * See `animateChild()`\n */\n AnimationMetadataType[AnimationMetadataType[\"AnimateChild\"] = 9] = \"AnimateChild\";\n /**\n * Contains animation parameters for a re-usable animation.\n * See `useAnimation()`\n */\n AnimationMetadataType[AnimationMetadataType[\"AnimateRef\"] = 10] = \"AnimateRef\";\n /**\n * Contains child-animation query data.\n * See `query()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Query\"] = 11] = \"Query\";\n /**\n * Contains data for staggering an animation sequence.\n * See `stagger()`\n */\n AnimationMetadataType[AnimationMetadataType[\"Stagger\"] = 12] = \"Stagger\";\n})(AnimationMetadataType || (AnimationMetadataType = {}));\n/**\n * Specifies automatic styling.\n *\n * @publicApi\n */\nconst AUTO_STYLE = '*';\n/**\n * Creates a named animation trigger, containing a list of [`state()`](api/animations/state)\n * and `transition()` entries to be evaluated when the expression\n * bound to the trigger changes.\n *\n * @param name An identifying string.\n * @param definitions An animation definition object, containing an array of\n * [`state()`](api/animations/state) and `transition()` declarations.\n *\n * @return An object that encapsulates the trigger data.\n *\n * @usageNotes\n * Define an animation trigger in the `animations` section of `@Component` metadata.\n * In the template, reference the trigger by name and bind it to a trigger expression that\n * evaluates to a defined animation state, using the following format:\n *\n * `[@triggerName]=\"expression\"`\n *\n * Animation trigger bindings convert all values to strings, and then match the\n * previous and current values against any linked transitions.\n * Booleans can be specified as `1` or `true` and `0` or `false`.\n *\n * ### Usage Example\n *\n * The following example creates an animation trigger reference based on the provided\n * name value.\n * The provided animation value is expected to be an array consisting of state and\n * transition declarations.\n *\n * ```typescript\n * @Component({\n * selector: \"my-component\",\n * templateUrl: \"my-component-tpl.html\",\n * animations: [\n * trigger(\"myAnimationTrigger\", [\n * state(...),\n * state(...),\n * transition(...),\n * transition(...)\n * ])\n * ]\n * })\n * class MyComponent {\n * myStatusExp = \"something\";\n * }\n * ```\n *\n * The template associated with this component makes use of the defined trigger\n * by binding to an element within its template code.\n *\n * ```html\n * \n *
...
\n * ```\n *\n * ### Using an inline function\n * The `transition` animation method also supports reading an inline function which can decide\n * if its associated animation should be run.\n *\n * ```typescript\n * // this method is run each time the `myAnimationTrigger` trigger value changes.\n * function myInlineMatcherFn(fromState: string, toState: string, element: any, params: {[key:\n string]: any}): boolean {\n * // notice that `element` and `params` are also available here\n * return toState == 'yes-please-animate';\n * }\n *\n * @Component({\n * selector: 'my-component',\n * templateUrl: 'my-component-tpl.html',\n * animations: [\n * trigger('myAnimationTrigger', [\n * transition(myInlineMatcherFn, [\n * // the animation sequence code\n * ]),\n * ])\n * ]\n * })\n * class MyComponent {\n * myStatusExp = \"yes-please-animate\";\n * }\n * ```\n *\n * ### Disabling Animations\n * When true, the special animation control binding `@.disabled` binding prevents\n * all animations from rendering.\n * Place the `@.disabled` binding on an element to disable\n * animations on the element itself, as well as any inner animation triggers\n * within the element.\n *\n * The following example shows how to use this feature:\n *\n * ```typescript\n * @Component({\n * selector: 'my-component',\n * template: `\n *
\n * \n *
\n * `,\n * animations: [\n * trigger(\"childAnimation\", [\n * // ...\n * ])\n * ]\n * })\n * class MyComponent {\n * isDisabled = true;\n * exp = '...';\n * }\n * ```\n *\n * When `@.disabled` is true, it prevents the `@childAnimation` trigger from animating,\n * along with any inner animations.\n *\n * ### Disable animations application-wide\n * When an area of the template is set to have animations disabled,\n * **all** inner components have their animations disabled as well.\n * This means that you can disable all animations for an app\n * by placing a host binding set on `@.disabled` on the topmost Angular component.\n *\n * ```typescript\n * import {Component, HostBinding} from '@angular/core';\n *\n * @Component({\n * selector: 'app-component',\n * templateUrl: 'app.component.html',\n * })\n * class AppComponent {\n * @HostBinding('@.disabled')\n * public animationsDisabled = true;\n * }\n * ```\n *\n * ### Overriding disablement of inner animations\n * Despite inner animations being disabled, a parent animation can `query()`\n * for inner elements located in disabled areas of the template and still animate\n * them if needed. This is also the case for when a sub animation is\n * queried by a parent and then later animated using `animateChild()`.\n *\n * ### Detecting when an animation is disabled\n * If a region of the DOM (or the entire application) has its animations disabled, the animation\n * trigger callbacks still fire, but for zero seconds. When the callback fires, it provides\n * an instance of an `AnimationEvent`. If animations are disabled,\n * the `.disabled` flag on the event is true.\n *\n * @publicApi\n */\nfunction trigger(name, definitions) {\n return { type: AnimationMetadataType.Trigger, name, definitions, options: {} };\n}\n/**\n * Defines an animation step that combines styling information with timing information.\n *\n * @param timings Sets `AnimateTimings` for the parent animation.\n * A string in the format \"duration [delay] [easing]\".\n * - Duration and delay are expressed as a number and optional time unit,\n * such as \"1s\" or \"10ms\" for one second and 10 milliseconds, respectively.\n * The default unit is milliseconds.\n * - The easing value controls how the animation accelerates and decelerates\n * during its runtime. Value is one of `ease`, `ease-in`, `ease-out`,\n * `ease-in-out`, or a `cubic-bezier()` function call.\n * If not supplied, no easing is applied.\n *\n * For example, the string \"1s 100ms ease-out\" specifies a duration of\n * 1000 milliseconds, and delay of 100 ms, and the \"ease-out\" easing style,\n * which decelerates near the end of the duration.\n * @param styles Sets AnimationStyles for the parent animation.\n * A function call to either `style()` or `keyframes()`\n * that returns a collection of CSS style entries to be applied to the parent animation.\n * When null, uses the styles from the destination state.\n * This is useful when describing an animation step that will complete an animation;\n * see \"Animating to the final state\" in `transitions()`.\n * @returns An object that encapsulates the animation step.\n *\n * @usageNotes\n * Call within an animation `sequence()`, `{@link animations/group group()}`, or\n * `transition()` call to specify an animation step\n * that applies given style data to the parent animation for a given amount of time.\n *\n * ### Syntax Examples\n * **Timing examples**\n *\n * The following examples show various `timings` specifications.\n * - `animate(500)` : Duration is 500 milliseconds.\n * - `animate(\"1s\")` : Duration is 1000 milliseconds.\n * - `animate(\"100ms 0.5s\")` : Duration is 100 milliseconds, delay is 500 milliseconds.\n * - `animate(\"5s ease-in\")` : Duration is 5000 milliseconds, easing in.\n * - `animate(\"5s 10ms cubic-bezier(.17,.67,.88,.1)\")` : Duration is 5000 milliseconds, delay is 10\n * milliseconds, easing according to a bezier curve.\n *\n * **Style examples**\n *\n * The following example calls `style()` to set a single CSS style.\n * ```typescript\n * animate(500, style({ background: \"red\" }))\n * ```\n * The following example calls `keyframes()` to set a CSS style\n * to different values for successive keyframes.\n * ```typescript\n * animate(500, keyframes(\n * [\n * style({ background: \"blue\" }),\n * style({ background: \"red\" })\n * ])\n * ```\n *\n * @publicApi\n */\nfunction animate(timings, styles = null) {\n return { type: AnimationMetadataType.Animate, styles, timings };\n}\n/**\n * @description Defines a list of animation steps to be run in parallel.\n *\n * @param steps An array of animation step objects.\n * - When steps are defined by `style()` or `animate()`\n * function calls, each call within the group is executed instantly.\n * - To specify offset styles to be applied at a later time, define steps with\n * `keyframes()`, or use `animate()` calls with a delay value.\n * For example:\n *\n * ```typescript\n * group([\n * animate(\"1s\", style({ background: \"black\" })),\n * animate(\"2s\", style({ color: \"white\" }))\n * ])\n * ```\n *\n * @param options An options object containing a delay and\n * developer-defined parameters that provide styling defaults and\n * can be overridden on invocation.\n *\n * @return An object that encapsulates the group data.\n *\n * @usageNotes\n * Grouped animations are useful when a series of styles must be\n * animated at different starting times and closed off at different ending times.\n *\n * When called within a `sequence()` or a\n * `transition()` call, does not continue to the next\n * instruction until all of the inner animation steps have completed.\n *\n * @publicApi\n */\nfunction group(steps, options = null) {\n return { type: AnimationMetadataType.Group, steps, options };\n}\n/**\n * Defines a list of animation steps to be run sequentially, one by one.\n *\n * @param steps An array of animation step objects.\n * - Steps defined by `style()` calls apply the styling data immediately.\n * - Steps defined by `animate()` calls apply the styling data over time\n * as specified by the timing data.\n *\n * ```typescript\n * sequence([\n * style({ opacity: 0 }),\n * animate(\"1s\", style({ opacity: 1 }))\n * ])\n * ```\n *\n * @param options An options object containing a delay and\n * developer-defined parameters that provide styling defaults and\n * can be overridden on invocation.\n *\n * @return An object that encapsulates the sequence data.\n *\n * @usageNotes\n * When you pass an array of steps to a\n * `transition()` call, the steps run sequentially by default.\n * Compare this to the `{@link animations/group group()}` call, which runs animation steps in\n *parallel.\n *\n * When a sequence is used within a `{@link animations/group group()}` or a `transition()` call,\n * execution continues to the next instruction only after each of the inner animation\n * steps have completed.\n *\n * @publicApi\n **/\nfunction sequence(steps, options = null) {\n return { type: AnimationMetadataType.Sequence, steps, options };\n}\n/**\n * Declares a key/value object containing CSS properties/styles that\n * can then be used for an animation [`state`](api/animations/state), within an animation\n *`sequence`, or as styling data for calls to `animate()` and `keyframes()`.\n *\n * @param tokens A set of CSS styles or HTML styles associated with an animation state.\n * The value can be any of the following:\n * - A key-value style pair associating a CSS property with a value.\n * - An array of key-value style pairs.\n * - An asterisk (*), to use auto-styling, where styles are derived from the element\n * being animated and applied to the animation when it starts.\n *\n * Auto-styling can be used to define a state that depends on layout or other\n * environmental factors.\n *\n * @return An object that encapsulates the style data.\n *\n * @usageNotes\n * The following examples create animation styles that collect a set of\n * CSS property values:\n *\n * ```typescript\n * // string values for CSS properties\n * style({ background: \"red\", color: \"blue\" })\n *\n * // numerical pixel values\n * style({ width: 100, height: 0 })\n * ```\n *\n * The following example uses auto-styling to allow an element to animate from\n * a height of 0 up to its full height:\n *\n * ```\n * style({ height: 0 }),\n * animate(\"1s\", style({ height: \"*\" }))\n * ```\n *\n * @publicApi\n **/\nfunction style(tokens) {\n return { type: AnimationMetadataType.Style, styles: tokens, offset: null };\n}\n/**\n * Declares an animation state within a trigger attached to an element.\n *\n * @param name One or more names for the defined state in a comma-separated string.\n * The following reserved state names can be supplied to define a style for specific use\n * cases:\n *\n * - `void` You can associate styles with this name to be used when\n * the element is detached from the application. For example, when an `ngIf` evaluates\n * to false, the state of the associated element is void.\n * - `*` (asterisk) Indicates the default state. You can associate styles with this name\n * to be used as the fallback when the state that is being animated is not declared\n * within the trigger.\n *\n * @param styles A set of CSS styles associated with this state, created using the\n * `style()` function.\n * This set of styles persists on the element once the state has been reached.\n * @param options Parameters that can be passed to the state when it is invoked.\n * 0 or more key-value pairs.\n * @return An object that encapsulates the new state data.\n *\n * @usageNotes\n * Use the `trigger()` function to register states to an animation trigger.\n * Use the `transition()` function to animate between states.\n * When a state is active within a component, its associated styles persist on the element,\n * even when the animation ends.\n *\n * @publicApi\n **/\nfunction state(name, styles, options) {\n return { type: AnimationMetadataType.State, name, styles, options };\n}\n/**\n * Defines a set of animation styles, associating each style with an optional `offset` value.\n *\n * @param steps A set of animation styles with optional offset data.\n * The optional `offset` value for a style specifies a percentage of the total animation\n * time at which that style is applied.\n * @returns An object that encapsulates the keyframes data.\n *\n * @usageNotes\n * Use with the `animate()` call. Instead of applying animations\n * from the current state\n * to the destination state, keyframes describe how each style entry is applied and at what point\n * within the animation arc.\n * Compare [CSS Keyframe Animations](https://www.w3schools.com/css/css3_animations.asp).\n *\n * ### Usage\n *\n * In the following example, the offset values describe\n * when each `backgroundColor` value is applied. The color is red at the start, and changes to\n * blue when 20% of the total time has elapsed.\n *\n * ```typescript\n * // the provided offset values\n * animate(\"5s\", keyframes([\n * style({ backgroundColor: \"red\", offset: 0 }),\n * style({ backgroundColor: \"blue\", offset: 0.2 }),\n * style({ backgroundColor: \"orange\", offset: 0.3 }),\n * style({ backgroundColor: \"black\", offset: 1 })\n * ]))\n * ```\n *\n * If there are no `offset` values specified in the style entries, the offsets\n * are calculated automatically.\n *\n * ```typescript\n * animate(\"5s\", keyframes([\n * style({ backgroundColor: \"red\" }) // offset = 0\n * style({ backgroundColor: \"blue\" }) // offset = 0.33\n * style({ backgroundColor: \"orange\" }) // offset = 0.66\n * style({ backgroundColor: \"black\" }) // offset = 1\n * ]))\n *```\n\n * @publicApi\n */\nfunction keyframes(steps) {\n return { type: AnimationMetadataType.Keyframes, steps };\n}\n/**\n * Declares an animation transition which is played when a certain specified condition is met.\n *\n * @param stateChangeExpr A string with a specific format or a function that specifies when the\n * animation transition should occur (see [State Change Expression](#state-change-expression)).\n *\n * @param steps One or more animation objects that represent the animation's instructions.\n *\n * @param options An options object that can be used to specify a delay for the animation or provide\n * custom parameters for it.\n *\n * @returns An object that encapsulates the transition data.\n *\n * @usageNotes\n *\n * ### State Change Expression\n *\n * The State Change Expression instructs Angular when to run the transition's animations, it can\n *either be\n * - a string with a specific syntax\n * - or a function that compares the previous and current state (value of the expression bound to\n * the element's trigger) and returns `true` if the transition should occur or `false` otherwise\n *\n * The string format can be:\n * - `fromState => toState`, which indicates that the transition's animations should occur then the\n * expression bound to the trigger's element goes from `fromState` to `toState`\n *\n * _Example:_\n * ```typescript\n * transition('open => closed', animate('.5s ease-out', style({ height: 0 }) ))\n * ```\n *\n * - `fromState <=> toState`, which indicates that the transition's animations should occur then\n * the expression bound to the trigger's element goes from `fromState` to `toState` or vice versa\n *\n * _Example:_\n * ```typescript\n * transition('enabled <=> disabled', animate('1s cubic-bezier(0.8,0.3,0,1)'))\n * ```\n *\n * - `:enter`/`:leave`, which indicates that the transition's animations should occur when the\n * element enters or exists the DOM\n *\n * _Example:_\n * ```typescript\n * transition(':enter', [\n * style({ opacity: 0 }),\n * animate('500ms', style({ opacity: 1 }))\n * ])\n * ```\n *\n * - `:increment`/`:decrement`, which indicates that the transition's animations should occur when\n * the numerical expression bound to the trigger's element has increased in value or decreased\n *\n * _Example:_\n * ```typescript\n * transition(':increment', query('@counter', animateChild()))\n * ```\n *\n * - a sequence of any of the above divided by commas, which indicates that transition's animations\n * should occur whenever one of the state change expressions matches\n *\n * _Example:_\n * ```typescript\n * transition(':increment, * => enabled, :enter', animate('1s ease', keyframes([\n * style({ transform: 'scale(1)', offset: 0}),\n * style({ transform: 'scale(1.1)', offset: 0.7}),\n * style({ transform: 'scale(1)', offset: 1})\n * ]))),\n * ```\n *\n * Also note that in such context:\n * - `void` can be used to indicate the absence of the element\n * - asterisks can be used as wildcards that match any state\n * - (as a consequence of the above, `void => *` is equivalent to `:enter` and `* => void` is\n * equivalent to `:leave`)\n * - `true` and `false` also match expression values of `1` and `0` respectively (but do not match\n * _truthy_ and _falsy_ values)\n *\n *
\n *\n * Be careful about entering end leaving elements as their transitions present a common\n * pitfall for developers.\n *\n * Note that when an element with a trigger enters the DOM its `:enter` transition always\n * gets executed, but its `:leave` transition will not be executed if the element is removed\n * alongside its parent (as it will be removed \"without warning\" before its transition has\n * a chance to be executed, the only way that such transition can occur is if the element\n * is exiting the DOM on its own).\n *\n *\n *
\n *\n * ### Animating to a Final State\n *\n * If the final step in a transition is a call to `animate()` that uses a timing value\n * with no `style` data, that step is automatically considered the final animation arc,\n * for the element to reach the final state, in such case Angular automatically adds or removes\n * CSS styles to ensure that the element is in the correct final state.\n *\n *\n * ### Usage Examples\n *\n * - Transition animations applied based on\n * the trigger's expression value\n *\n * ```HTML\n *
\n * ...\n *
\n * ```\n *\n * ```typescript\n * trigger(\"myAnimationTrigger\", [\n * ..., // states\n * transition(\"on => off, open => closed\", animate(500)),\n * transition(\"* <=> error\", query('.indicator', animateChild()))\n * ])\n * ```\n *\n * - Transition animations applied based on custom logic dependent\n * on the trigger's expression value and provided parameters\n *\n * ```HTML\n *
\n * ...\n *
\n * ```\n *\n * ```typescript\n * trigger(\"myAnimationTrigger\", [\n * ..., // states\n * transition(\n * (fromState, toState, _element, params) =>\n * ['firststep', 'laststep'].includes(fromState.toLowerCase())\n * && toState === params?.['target'],\n * animate('1s')\n * )\n * ])\n * ```\n *\n * @publicApi\n **/\nfunction transition(stateChangeExpr, steps, options = null) {\n return { type: AnimationMetadataType.Transition, expr: stateChangeExpr, animation: steps, options };\n}\n/**\n * Produces a reusable animation that can be invoked in another animation or sequence,\n * by calling the `useAnimation()` function.\n *\n * @param steps One or more animation objects, as returned by the `animate()`\n * or `sequence()` function, that form a transformation from one state to another.\n * A sequence is used by default when you pass an array.\n * @param options An options object that can contain a delay value for the start of the\n * animation, and additional developer-defined parameters.\n * Provided values for additional parameters are used as defaults,\n * and override values can be passed to the caller on invocation.\n * @returns An object that encapsulates the animation data.\n *\n * @usageNotes\n * The following example defines a reusable animation, providing some default parameter\n * values.\n *\n * ```typescript\n * var fadeAnimation = animation([\n * style({ opacity: '{{ start }}' }),\n * animate('{{ time }}',\n * style({ opacity: '{{ end }}'}))\n * ],\n * { params: { time: '1000ms', start: 0, end: 1 }});\n * ```\n *\n * The following invokes the defined animation with a call to `useAnimation()`,\n * passing in override parameter values.\n *\n * ```js\n * useAnimation(fadeAnimation, {\n * params: {\n * time: '2s',\n * start: 1,\n * end: 0\n * }\n * })\n * ```\n *\n * If any of the passed-in parameter values are missing from this call,\n * the default values are used. If one or more parameter values are missing before a step is\n * animated, `useAnimation()` throws an error.\n *\n * @publicApi\n */\nfunction animation(steps, options = null) {\n return { type: AnimationMetadataType.Reference, animation: steps, options };\n}\n/**\n * Executes a queried inner animation element within an animation sequence.\n *\n * @param options An options object that can contain a delay value for the start of the\n * animation, and additional override values for developer-defined parameters.\n * @return An object that encapsulates the child animation data.\n *\n * @usageNotes\n * Each time an animation is triggered in Angular, the parent animation\n * has priority and any child animations are blocked. In order\n * for a child animation to run, the parent animation must query each of the elements\n * containing child animations, and run them using this function.\n *\n * Note that this feature is designed to be used with `query()` and it will only work\n * with animations that are assigned using the Angular animation library. CSS keyframes\n * and transitions are not handled by this API.\n *\n * @publicApi\n */\nfunction animateChild(options = null) {\n return { type: AnimationMetadataType.AnimateChild, options };\n}\n/**\n * Starts a reusable animation that is created using the `animation()` function.\n *\n * @param animation The reusable animation to start.\n * @param options An options object that can contain a delay value for the start of\n * the animation, and additional override values for developer-defined parameters.\n * @return An object that contains the animation parameters.\n *\n * @publicApi\n */\nfunction useAnimation(animation, options = null) {\n return { type: AnimationMetadataType.AnimateRef, animation, options };\n}\n/**\n * Finds one or more inner elements within the current element that is\n * being animated within a sequence. Use with `animate()`.\n *\n * @param selector The element to query, or a set of elements that contain Angular-specific\n * characteristics, specified with one or more of the following tokens.\n * - `query(\":enter\")` or `query(\":leave\")` : Query for newly inserted/removed elements (not\n * all elements can be queried via these tokens, see\n * [Entering and Leaving Elements](#entering-and-leaving-elements))\n * - `query(\":animating\")` : Query all currently animating elements.\n * - `query(\"@triggerName\")` : Query elements that contain an animation trigger.\n * - `query(\"@*\")` : Query all elements that contain an animation triggers.\n * - `query(\":self\")` : Include the current element into the animation sequence.\n *\n * @param animation One or more animation steps to apply to the queried element or elements.\n * An array is treated as an animation sequence.\n * @param options An options object. Use the 'limit' field to limit the total number of\n * items to collect.\n * @return An object that encapsulates the query data.\n *\n * @usageNotes\n *\n * ### Multiple Tokens\n *\n * Tokens can be merged into a combined query selector string. For example:\n *\n * ```typescript\n * query(':self, .record:enter, .record:leave, @subTrigger', [...])\n * ```\n *\n * The `query()` function collects multiple elements and works internally by using\n * `element.querySelectorAll`. Use the `limit` field of an options object to limit\n * the total number of items to be collected. For example:\n *\n * ```js\n * query('div', [\n * animate(...),\n * animate(...)\n * ], { limit: 1 })\n * ```\n *\n * By default, throws an error when zero items are found. Set the\n * `optional` flag to ignore this error. For example:\n *\n * ```js\n * query('.some-element-that-may-not-be-there', [\n * animate(...),\n * animate(...)\n * ], { optional: true })\n * ```\n *\n * ### Entering and Leaving Elements\n *\n * Not all elements can be queried via the `:enter` and `:leave` tokens, the only ones\n * that can are those that Angular assumes can enter/leave based on their own logic\n * (if their insertion/removal is simply a consequence of that of their parent they\n * should be queried via a different token in their parent's `:enter`/`:leave` transitions).\n *\n * The only elements Angular assumes can enter/leave based on their own logic (thus the only\n * ones that can be queried via the `:enter` and `:leave` tokens) are:\n * - Those inserted dynamically (via `ViewContainerRef`)\n * - Those that have a structural directive (which, under the hood, are a subset of the above ones)\n *\n *
\n *\n * Note that elements will be successfully queried via `:enter`/`:leave` even if their\n * insertion/removal is not done manually via `ViewContainerRef`or caused by their structural\n * directive (e.g. they enter/exit alongside their parent).\n *\n *
\n *\n *
\n *\n * There is an exception to what previously mentioned, besides elements entering/leaving based on\n * their own logic, elements with an animation trigger can always be queried via `:leave` when\n * their parent is also leaving.\n *\n *
\n *\n * ### Usage Example\n *\n * The following example queries for inner elements and animates them\n * individually using `animate()`.\n *\n * ```typescript\n * @Component({\n * selector: 'inner',\n * template: `\n *
\n *
Title
\n *
\n * Blah blah blah\n *
\n *
\n * `,\n * animations: [\n * trigger('queryAnimation', [\n * transition('* => goAnimate', [\n * // hide the inner elements\n * query('h1', style({ opacity: 0 })),\n * query('.content', style({ opacity: 0 })),\n *\n * // animate the inner elements in, one by one\n * query('h1', animate(1000, style({ opacity: 1 }))),\n * query('.content', animate(1000, style({ opacity: 1 }))),\n * ])\n * ])\n * ]\n * })\n * class Cmp {\n * exp = '';\n *\n * goAnimate() {\n * this.exp = 'goAnimate';\n * }\n * }\n * ```\n *\n * @publicApi\n */\nfunction query(selector, animation, options = null) {\n return { type: AnimationMetadataType.Query, selector, animation, options };\n}\n/**\n * Use within an animation `query()` call to issue a timing gap after\n * each queried item is animated.\n *\n * @param timings A delay value.\n * @param animation One ore more animation steps.\n * @returns An object that encapsulates the stagger data.\n *\n * @usageNotes\n * In the following example, a container element wraps a list of items stamped out\n * by an `ngFor`. The container element contains an animation trigger that will later be set\n * to query for each of the inner items.\n *\n * Each time items are added, the opacity fade-in animation runs,\n * and each removed item is faded out.\n * When either of these animations occur, the stagger effect is\n * applied after each item's animation is started.\n *\n * ```html\n * \n * \n * \n *
\n *
\n * {{ item }}\n *
\n *
\n * ```\n *\n * Here is the component code:\n *\n * ```typescript\n * import {trigger, transition, style, animate, query, stagger} from '@angular/animations';\n * @Component({\n * templateUrl: 'list.component.html',\n * animations: [\n * trigger('listAnimation', [\n * ...\n * ])\n * ]\n * })\n * class ListComponent {\n * items = [];\n *\n * showItems() {\n * this.items = [0,1,2,3,4];\n * }\n *\n * hideItems() {\n * this.items = [];\n * }\n *\n * toggle() {\n * this.items.length ? this.hideItems() : this.showItems();\n * }\n * }\n * ```\n *\n * Here is the animation trigger code:\n *\n * ```typescript\n * trigger('listAnimation', [\n * transition('* => *', [ // each time the binding value changes\n * query(':leave', [\n * stagger(100, [\n * animate('0.5s', style({ opacity: 0 }))\n * ])\n * ]),\n * query(':enter', [\n * style({ opacity: 0 }),\n * stagger(100, [\n * animate('0.5s', style({ opacity: 1 }))\n * ])\n * ])\n * ])\n * ])\n * ```\n *\n * @publicApi\n */\nfunction stagger(timings, animation) {\n return { type: AnimationMetadataType.Stagger, timings, animation };\n}\n\n/**\n * An injectable service that produces an animation sequence programmatically within an\n * Angular component or directive.\n * Provided by the `BrowserAnimationsModule` or `NoopAnimationsModule`.\n *\n * @usageNotes\n *\n * To use this service, add it to your component or directive as a dependency.\n * The service is instantiated along with your component.\n *\n * Apps do not typically need to create their own animation players, but if you\n * do need to, follow these steps:\n *\n * 1. Use the [AnimationBuilder.build](api/animations/AnimationBuilder#build)() method\n * to create a programmatic animation. The method returns an `AnimationFactory` instance.\n *\n * 2. Use the factory object to create an `AnimationPlayer` and attach it to a DOM element.\n *\n * 3. Use the player object to control the animation programmatically.\n *\n * For example:\n *\n * ```ts\n * // import the service from BrowserAnimationsModule\n * import {AnimationBuilder} from '@angular/animations';\n * // require the service as a dependency\n * class MyCmp {\n * constructor(private _builder: AnimationBuilder) {}\n *\n * makeAnimation(element: any) {\n * // first define a reusable animation\n * const myAnimation = this._builder.build([\n * style({ width: 0 }),\n * animate(1000, style({ width: '100px' }))\n * ]);\n *\n * // use the returned factory object to create a player\n * const player = myAnimation.create(element);\n *\n * player.play();\n * }\n * }\n * ```\n *\n * @publicApi\n */\nclass AnimationBuilder {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: AnimationBuilder, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: AnimationBuilder, providedIn: 'root', useFactory: () => inject(BrowserAnimationBuilder) }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: AnimationBuilder, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root', useFactory: () => inject(BrowserAnimationBuilder) }]\n }] });\n/**\n * A factory object returned from the\n * [AnimationBuilder.build](api/animations/AnimationBuilder#build)()\n * method.\n *\n * @publicApi\n */\nclass AnimationFactory {\n}\nclass BrowserAnimationBuilder extends AnimationBuilder {\n constructor(rootRenderer, doc) {\n super();\n this.animationModuleType = inject(ANIMATION_MODULE_TYPE, { optional: true });\n this._nextAnimationId = 0;\n const typeData = {\n id: '0',\n encapsulation: ViewEncapsulation.None,\n styles: [],\n data: { animation: [] },\n };\n this._renderer = rootRenderer.createRenderer(doc.body, typeData);\n if (this.animationModuleType === null && !isAnimationRenderer(this._renderer)) {\n // We only support AnimationRenderer & DynamicDelegationRenderer for this AnimationBuilder\n throw new ɵRuntimeError(3600 /* RuntimeErrorCode.BROWSER_ANIMATION_BUILDER_INJECTED_WITHOUT_ANIMATIONS */, (typeof ngDevMode === 'undefined' || ngDevMode) &&\n 'Angular detected that the `AnimationBuilder` was injected, but animation support was not enabled. ' +\n 'Please make sure that you enable animations in your application by calling `provideAnimations()` or `provideAnimationsAsync()` function.');\n }\n }\n build(animation) {\n const id = this._nextAnimationId;\n this._nextAnimationId++;\n const entry = Array.isArray(animation) ? sequence(animation) : animation;\n issueAnimationCommand(this._renderer, null, id, 'register', [entry]);\n return new BrowserAnimationFactory(id, this._renderer);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: BrowserAnimationBuilder, deps: [{ token: i0.RendererFactory2 }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: BrowserAnimationBuilder, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: BrowserAnimationBuilder, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i0.RendererFactory2 }, { type: Document, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }] });\nclass BrowserAnimationFactory extends AnimationFactory {\n constructor(_id, _renderer) {\n super();\n this._id = _id;\n this._renderer = _renderer;\n }\n create(element, options) {\n return new RendererAnimationPlayer(this._id, element, options || {}, this._renderer);\n }\n}\nclass RendererAnimationPlayer {\n constructor(id, element, options, _renderer) {\n this.id = id;\n this.element = element;\n this._renderer = _renderer;\n this.parentPlayer = null;\n this._started = false;\n this.totalTime = 0;\n this._command('create', options);\n }\n _listen(eventName, callback) {\n return this._renderer.listen(this.element, `@@${this.id}:${eventName}`, callback);\n }\n _command(command, ...args) {\n issueAnimationCommand(this._renderer, this.element, this.id, command, args);\n }\n onDone(fn) {\n this._listen('done', fn);\n }\n onStart(fn) {\n this._listen('start', fn);\n }\n onDestroy(fn) {\n this._listen('destroy', fn);\n }\n init() {\n this._command('init');\n }\n hasStarted() {\n return this._started;\n }\n play() {\n this._command('play');\n this._started = true;\n }\n pause() {\n this._command('pause');\n }\n restart() {\n this._command('restart');\n }\n finish() {\n this._command('finish');\n }\n destroy() {\n this._command('destroy');\n }\n reset() {\n this._command('reset');\n this._started = false;\n }\n setPosition(p) {\n this._command('setPosition', p);\n }\n getPosition() {\n return unwrapAnimationRenderer(this._renderer)?.engine?.players[this.id]?.getPosition() ?? 0;\n }\n}\nfunction issueAnimationCommand(renderer, element, id, command, args) {\n renderer.setProperty(element, `@@${id}:${command}`, args);\n}\n/**\n * The following 2 methods cannot reference their correct types (AnimationRenderer &\n * DynamicDelegationRenderer) since this would introduce a import cycle.\n */\nfunction unwrapAnimationRenderer(renderer) {\n const type = renderer.ɵtype;\n if (type === 0 /* AnimationRendererType.Regular */) {\n return renderer;\n }\n else if (type === 1 /* AnimationRendererType.Delegated */) {\n return renderer.animationRenderer;\n }\n return null;\n}\nfunction isAnimationRenderer(renderer) {\n const type = renderer.ɵtype;\n return type === 0 /* AnimationRendererType.Regular */ || type === 1 /* AnimationRendererType.Delegated */;\n}\n\n/**\n * An empty programmatic controller for reusable animations.\n * Used internally when animations are disabled, to avoid\n * checking for the null case when an animation player is expected.\n *\n * @see {@link animate}\n * @see {@link AnimationPlayer}\n * @see {@link ɵAnimationGroupPlayer AnimationGroupPlayer}\n *\n * @publicApi\n */\nclass NoopAnimationPlayer {\n constructor(duration = 0, delay = 0) {\n this._onDoneFns = [];\n this._onStartFns = [];\n this._onDestroyFns = [];\n this._originalOnDoneFns = [];\n this._originalOnStartFns = [];\n this._started = false;\n this._destroyed = false;\n this._finished = false;\n this._position = 0;\n this.parentPlayer = null;\n this.totalTime = duration + delay;\n }\n _onFinish() {\n if (!this._finished) {\n this._finished = true;\n this._onDoneFns.forEach((fn) => fn());\n this._onDoneFns = [];\n }\n }\n onStart(fn) {\n this._originalOnStartFns.push(fn);\n this._onStartFns.push(fn);\n }\n onDone(fn) {\n this._originalOnDoneFns.push(fn);\n this._onDoneFns.push(fn);\n }\n onDestroy(fn) {\n this._onDestroyFns.push(fn);\n }\n hasStarted() {\n return this._started;\n }\n init() { }\n play() {\n if (!this.hasStarted()) {\n this._onStart();\n this.triggerMicrotask();\n }\n this._started = true;\n }\n /** @internal */\n triggerMicrotask() {\n queueMicrotask(() => this._onFinish());\n }\n _onStart() {\n this._onStartFns.forEach((fn) => fn());\n this._onStartFns = [];\n }\n pause() { }\n restart() { }\n finish() {\n this._onFinish();\n }\n destroy() {\n if (!this._destroyed) {\n this._destroyed = true;\n if (!this.hasStarted()) {\n this._onStart();\n }\n this.finish();\n this._onDestroyFns.forEach((fn) => fn());\n this._onDestroyFns = [];\n }\n }\n reset() {\n this._started = false;\n this._finished = false;\n this._onStartFns = this._originalOnStartFns;\n this._onDoneFns = this._originalOnDoneFns;\n }\n setPosition(position) {\n this._position = this.totalTime ? position * this.totalTime : 1;\n }\n getPosition() {\n return this.totalTime ? this._position / this.totalTime : 1;\n }\n /** @internal */\n triggerCallback(phaseName) {\n const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;\n methods.forEach((fn) => fn());\n methods.length = 0;\n }\n}\n\n/**\n * A programmatic controller for a group of reusable animations.\n * Used internally to control animations.\n *\n * @see {@link AnimationPlayer}\n * @see {@link animations/group group}\n *\n */\nclass AnimationGroupPlayer {\n constructor(_players) {\n this._onDoneFns = [];\n this._onStartFns = [];\n this._finished = false;\n this._started = false;\n this._destroyed = false;\n this._onDestroyFns = [];\n this.parentPlayer = null;\n this.totalTime = 0;\n this.players = _players;\n let doneCount = 0;\n let destroyCount = 0;\n let startCount = 0;\n const total = this.players.length;\n if (total == 0) {\n queueMicrotask(() => this._onFinish());\n }\n else {\n this.players.forEach((player) => {\n player.onDone(() => {\n if (++doneCount == total) {\n this._onFinish();\n }\n });\n player.onDestroy(() => {\n if (++destroyCount == total) {\n this._onDestroy();\n }\n });\n player.onStart(() => {\n if (++startCount == total) {\n this._onStart();\n }\n });\n });\n }\n this.totalTime = this.players.reduce((time, player) => Math.max(time, player.totalTime), 0);\n }\n _onFinish() {\n if (!this._finished) {\n this._finished = true;\n this._onDoneFns.forEach((fn) => fn());\n this._onDoneFns = [];\n }\n }\n init() {\n this.players.forEach((player) => player.init());\n }\n onStart(fn) {\n this._onStartFns.push(fn);\n }\n _onStart() {\n if (!this.hasStarted()) {\n this._started = true;\n this._onStartFns.forEach((fn) => fn());\n this._onStartFns = [];\n }\n }\n onDone(fn) {\n this._onDoneFns.push(fn);\n }\n onDestroy(fn) {\n this._onDestroyFns.push(fn);\n }\n hasStarted() {\n return this._started;\n }\n play() {\n if (!this.parentPlayer) {\n this.init();\n }\n this._onStart();\n this.players.forEach((player) => player.play());\n }\n pause() {\n this.players.forEach((player) => player.pause());\n }\n restart() {\n this.players.forEach((player) => player.restart());\n }\n finish() {\n this._onFinish();\n this.players.forEach((player) => player.finish());\n }\n destroy() {\n this._onDestroy();\n }\n _onDestroy() {\n if (!this._destroyed) {\n this._destroyed = true;\n this._onFinish();\n this.players.forEach((player) => player.destroy());\n this._onDestroyFns.forEach((fn) => fn());\n this._onDestroyFns = [];\n }\n }\n reset() {\n this.players.forEach((player) => player.reset());\n this._destroyed = false;\n this._finished = false;\n this._started = false;\n }\n setPosition(p) {\n const timeAtPosition = p * this.totalTime;\n this.players.forEach((player) => {\n const position = player.totalTime ? Math.min(1, timeAtPosition / player.totalTime) : 1;\n player.setPosition(position);\n });\n }\n getPosition() {\n const longestPlayer = this.players.reduce((longestSoFar, player) => {\n const newPlayerIsLongest = longestSoFar === null || player.totalTime > longestSoFar.totalTime;\n return newPlayerIsLongest ? player : longestSoFar;\n }, null);\n return longestPlayer != null ? longestPlayer.getPosition() : 0;\n }\n beforeDestroy() {\n this.players.forEach((player) => {\n if (player.beforeDestroy) {\n player.beforeDestroy();\n }\n });\n }\n /** @internal */\n triggerCallback(phaseName) {\n const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;\n methods.forEach((fn) => fn());\n methods.length = 0;\n }\n}\n\nconst ɵPRE_STYLE = '!';\n\n/**\n * @module\n * @description\n * Entry point for all animation APIs of the animation package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AUTO_STYLE, AnimationBuilder, AnimationFactory, AnimationMetadataType, NoopAnimationPlayer, animate, animateChild, animation, group, keyframes, query, sequence, stagger, state, style, transition, trigger, useAnimation, AnimationGroupPlayer as ɵAnimationGroupPlayer, BrowserAnimationBuilder as ɵBrowserAnimationBuilder, ɵPRE_STYLE };\n","/**\n * @license Angular v17.3.12\n * (c) 2010-2024 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { ɵAnimationGroupPlayer, NoopAnimationPlayer, AUTO_STYLE, ɵPRE_STYLE, sequence, AnimationMetadataType, style } from '@angular/animations';\nimport * as i0 from '@angular/core';\nimport { ɵRuntimeError, Injectable } from '@angular/core';\n\nconst LINE_START = '\\n - ';\nfunction invalidTimingValue(exp) {\n return new ɵRuntimeError(3000 /* RuntimeErrorCode.INVALID_TIMING_VALUE */, ngDevMode && `The provided timing value \"${exp}\" is invalid.`);\n}\nfunction negativeStepValue() {\n return new ɵRuntimeError(3100 /* RuntimeErrorCode.NEGATIVE_STEP_VALUE */, ngDevMode && 'Duration values below 0 are not allowed for this animation step.');\n}\nfunction negativeDelayValue() {\n return new ɵRuntimeError(3101 /* RuntimeErrorCode.NEGATIVE_DELAY_VALUE */, ngDevMode && 'Delay values below 0 are not allowed for this animation step.');\n}\nfunction invalidStyleParams(varName) {\n return new ɵRuntimeError(3001 /* RuntimeErrorCode.INVALID_STYLE_PARAMS */, ngDevMode &&\n `Unable to resolve the local animation param ${varName} in the given list of values`);\n}\nfunction invalidParamValue(varName) {\n return new ɵRuntimeError(3003 /* RuntimeErrorCode.INVALID_PARAM_VALUE */, ngDevMode && `Please provide a value for the animation param ${varName}`);\n}\nfunction invalidNodeType(nodeType) {\n return new ɵRuntimeError(3004 /* RuntimeErrorCode.INVALID_NODE_TYPE */, ngDevMode && `Unable to resolve animation metadata node #${nodeType}`);\n}\nfunction invalidCssUnitValue(userProvidedProperty, value) {\n return new ɵRuntimeError(3005 /* RuntimeErrorCode.INVALID_CSS_UNIT_VALUE */, ngDevMode && `Please provide a CSS unit value for ${userProvidedProperty}:${value}`);\n}\nfunction invalidTrigger() {\n return new ɵRuntimeError(3006 /* RuntimeErrorCode.INVALID_TRIGGER */, ngDevMode &&\n \"animation triggers cannot be prefixed with an `@` sign (e.g. trigger('@foo', [...]))\");\n}\nfunction invalidDefinition() {\n return new ɵRuntimeError(3007 /* RuntimeErrorCode.INVALID_DEFINITION */, ngDevMode && 'only state() and transition() definitions can sit inside of a trigger()');\n}\nfunction invalidState(metadataName, missingSubs) {\n return new ɵRuntimeError(3008 /* RuntimeErrorCode.INVALID_STATE */, ngDevMode &&\n `state(\"${metadataName}\", ...) must define default values for all the following style substitutions: ${missingSubs.join(', ')}`);\n}\nfunction invalidStyleValue(value) {\n return new ɵRuntimeError(3002 /* RuntimeErrorCode.INVALID_STYLE_VALUE */, ngDevMode && `The provided style string value ${value} is not allowed.`);\n}\nfunction invalidProperty(prop) {\n return new ɵRuntimeError(3009 /* RuntimeErrorCode.INVALID_PROPERTY */, ngDevMode &&\n `The provided animation property \"${prop}\" is not a supported CSS property for animations`);\n}\nfunction invalidParallelAnimation(prop, firstStart, firstEnd, secondStart, secondEnd) {\n return new ɵRuntimeError(3010 /* RuntimeErrorCode.INVALID_PARALLEL_ANIMATION */, ngDevMode &&\n `The CSS property \"${prop}\" that exists between the times of \"${firstStart}ms\" and \"${firstEnd}ms\" is also being animated in a parallel animation between the times of \"${secondStart}ms\" and \"${secondEnd}ms\"`);\n}\nfunction invalidKeyframes() {\n return new ɵRuntimeError(3011 /* RuntimeErrorCode.INVALID_KEYFRAMES */, ngDevMode && `keyframes() must be placed inside of a call to animate()`);\n}\nfunction invalidOffset() {\n return new ɵRuntimeError(3012 /* RuntimeErrorCode.INVALID_OFFSET */, ngDevMode && `Please ensure that all keyframe offsets are between 0 and 1`);\n}\nfunction keyframeOffsetsOutOfOrder() {\n return new ɵRuntimeError(3200 /* RuntimeErrorCode.KEYFRAME_OFFSETS_OUT_OF_ORDER */, ngDevMode && `Please ensure that all keyframe offsets are in order`);\n}\nfunction keyframesMissingOffsets() {\n return new ɵRuntimeError(3202 /* RuntimeErrorCode.KEYFRAMES_MISSING_OFFSETS */, ngDevMode && `Not all style() steps within the declared keyframes() contain offsets`);\n}\nfunction invalidStagger() {\n return new ɵRuntimeError(3013 /* RuntimeErrorCode.INVALID_STAGGER */, ngDevMode && `stagger() can only be used inside of query()`);\n}\nfunction invalidQuery(selector) {\n return new ɵRuntimeError(3014 /* RuntimeErrorCode.INVALID_QUERY */, ngDevMode &&\n `\\`query(\"${selector}\")\\` returned zero elements. (Use \\`query(\"${selector}\", { optional: true })\\` if you wish to allow this.)`);\n}\nfunction invalidExpression(expr) {\n return new ɵRuntimeError(3015 /* RuntimeErrorCode.INVALID_EXPRESSION */, ngDevMode && `The provided transition expression \"${expr}\" is not supported`);\n}\nfunction invalidTransitionAlias(alias) {\n return new ɵRuntimeError(3016 /* RuntimeErrorCode.INVALID_TRANSITION_ALIAS */, ngDevMode && `The transition alias value \"${alias}\" is not supported`);\n}\nfunction validationFailed(errors) {\n return new ɵRuntimeError(3500 /* RuntimeErrorCode.VALIDATION_FAILED */, ngDevMode && `animation validation failed:\\n${errors.map((err) => err.message).join('\\n')}`);\n}\nfunction buildingFailed(errors) {\n return new ɵRuntimeError(3501 /* RuntimeErrorCode.BUILDING_FAILED */, ngDevMode && `animation building failed:\\n${errors.map((err) => err.message).join('\\n')}`);\n}\nfunction triggerBuildFailed(name, errors) {\n return new ɵRuntimeError(3404 /* RuntimeErrorCode.TRIGGER_BUILD_FAILED */, ngDevMode &&\n `The animation trigger \"${name}\" has failed to build due to the following errors:\\n - ${errors\n .map((err) => err.message)\n .join('\\n - ')}`);\n}\nfunction animationFailed(errors) {\n return new ɵRuntimeError(3502 /* RuntimeErrorCode.ANIMATION_FAILED */, ngDevMode &&\n `Unable to animate due to the following errors:${LINE_START}${errors\n .map((err) => err.message)\n .join(LINE_START)}`);\n}\nfunction registerFailed(errors) {\n return new ɵRuntimeError(3503 /* RuntimeErrorCode.REGISTRATION_FAILED */, ngDevMode &&\n `Unable to build the animation due to the following errors: ${errors\n .map((err) => err.message)\n .join('\\n')}`);\n}\nfunction missingOrDestroyedAnimation() {\n return new ɵRuntimeError(3300 /* RuntimeErrorCode.MISSING_OR_DESTROYED_ANIMATION */, ngDevMode && \"The requested animation doesn't exist or has already been destroyed\");\n}\nfunction createAnimationFailed(errors) {\n return new ɵRuntimeError(3504 /* RuntimeErrorCode.CREATE_ANIMATION_FAILED */, ngDevMode &&\n `Unable to create the animation due to the following errors:${errors\n .map((err) => err.message)\n .join('\\n')}`);\n}\nfunction missingPlayer(id) {\n return new ɵRuntimeError(3301 /* RuntimeErrorCode.MISSING_PLAYER */, ngDevMode && `Unable to find the timeline player referenced by ${id}`);\n}\nfunction missingTrigger(phase, name) {\n return new ɵRuntimeError(3302 /* RuntimeErrorCode.MISSING_TRIGGER */, ngDevMode &&\n `Unable to listen on the animation trigger event \"${phase}\" because the animation trigger \"${name}\" doesn\\'t exist!`);\n}\nfunction missingEvent(name) {\n return new ɵRuntimeError(3303 /* RuntimeErrorCode.MISSING_EVENT */, ngDevMode &&\n `Unable to listen on the animation trigger \"${name}\" because the provided event is undefined!`);\n}\nfunction unsupportedTriggerEvent(phase, name) {\n return new ɵRuntimeError(3400 /* RuntimeErrorCode.UNSUPPORTED_TRIGGER_EVENT */, ngDevMode &&\n `The provided animation trigger event \"${phase}\" for the animation trigger \"${name}\" is not supported!`);\n}\nfunction unregisteredTrigger(name) {\n return new ɵRuntimeError(3401 /* RuntimeErrorCode.UNREGISTERED_TRIGGER */, ngDevMode && `The provided animation trigger \"${name}\" has not been registered!`);\n}\nfunction triggerTransitionsFailed(errors) {\n return new ɵRuntimeError(3402 /* RuntimeErrorCode.TRIGGER_TRANSITIONS_FAILED */, ngDevMode &&\n `Unable to process animations due to the following failed trigger transitions\\n ${errors\n .map((err) => err.message)\n .join('\\n')}`);\n}\nfunction triggerParsingFailed(name, errors) {\n return new ɵRuntimeError(3403 /* RuntimeErrorCode.TRIGGER_PARSING_FAILED */, ngDevMode &&\n `Animation parsing for the ${name} trigger have failed:${LINE_START}${errors\n .map((err) => err.message)\n .join(LINE_START)}`);\n}\nfunction transitionFailed(name, errors) {\n return new ɵRuntimeError(3505 /* RuntimeErrorCode.TRANSITION_FAILED */, ngDevMode && `@${name} has failed due to:\\n ${errors.map((err) => err.message).join('\\n- ')}`);\n}\n\n/**\n * Set of all animatable CSS properties\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties\n */\nconst ANIMATABLE_PROP_SET = new Set([\n '-moz-outline-radius',\n '-moz-outline-radius-bottomleft',\n '-moz-outline-radius-bottomright',\n '-moz-outline-radius-topleft',\n '-moz-outline-radius-topright',\n '-ms-grid-columns',\n '-ms-grid-rows',\n '-webkit-line-clamp',\n '-webkit-text-fill-color',\n '-webkit-text-stroke',\n '-webkit-text-stroke-color',\n 'accent-color',\n 'all',\n 'backdrop-filter',\n 'background',\n 'background-color',\n 'background-position',\n 'background-size',\n 'block-size',\n 'border',\n 'border-block-end',\n 'border-block-end-color',\n 'border-block-end-width',\n 'border-block-start',\n 'border-block-start-color',\n 'border-block-start-width',\n 'border-bottom',\n 'border-bottom-color',\n 'border-bottom-left-radius',\n 'border-bottom-right-radius',\n 'border-bottom-width',\n 'border-color',\n 'border-end-end-radius',\n 'border-end-start-radius',\n 'border-image-outset',\n 'border-image-slice',\n 'border-image-width',\n 'border-inline-end',\n 'border-inline-end-color',\n 'border-inline-end-width',\n 'border-inline-start',\n 'border-inline-start-color',\n 'border-inline-start-width',\n 'border-left',\n 'border-left-color',\n 'border-left-width',\n 'border-radius',\n 'border-right',\n 'border-right-color',\n 'border-right-width',\n 'border-start-end-radius',\n 'border-start-start-radius',\n 'border-top',\n 'border-top-color',\n 'border-top-left-radius',\n 'border-top-right-radius',\n 'border-top-width',\n 'border-width',\n 'bottom',\n 'box-shadow',\n 'caret-color',\n 'clip',\n 'clip-path',\n 'color',\n 'column-count',\n 'column-gap',\n 'column-rule',\n 'column-rule-color',\n 'column-rule-width',\n 'column-width',\n 'columns',\n 'filter',\n 'flex',\n 'flex-basis',\n 'flex-grow',\n 'flex-shrink',\n 'font',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-variation-settings',\n 'font-weight',\n 'gap',\n 'grid-column-gap',\n 'grid-gap',\n 'grid-row-gap',\n 'grid-template-columns',\n 'grid-template-rows',\n 'height',\n 'inline-size',\n 'input-security',\n 'inset',\n 'inset-block',\n 'inset-block-end',\n 'inset-block-start',\n 'inset-inline',\n 'inset-inline-end',\n 'inset-inline-start',\n 'left',\n 'letter-spacing',\n 'line-clamp',\n 'line-height',\n 'margin',\n 'margin-block-end',\n 'margin-block-start',\n 'margin-bottom',\n 'margin-inline-end',\n 'margin-inline-start',\n 'margin-left',\n 'margin-right',\n 'margin-top',\n 'mask',\n 'mask-border',\n 'mask-position',\n 'mask-size',\n 'max-block-size',\n 'max-height',\n 'max-inline-size',\n 'max-lines',\n 'max-width',\n 'min-block-size',\n 'min-height',\n 'min-inline-size',\n 'min-width',\n 'object-position',\n 'offset',\n 'offset-anchor',\n 'offset-distance',\n 'offset-path',\n 'offset-position',\n 'offset-rotate',\n 'opacity',\n 'order',\n 'outline',\n 'outline-color',\n 'outline-offset',\n 'outline-width',\n 'padding',\n 'padding-block-end',\n 'padding-block-start',\n 'padding-bottom',\n 'padding-inline-end',\n 'padding-inline-start',\n 'padding-left',\n 'padding-right',\n 'padding-top',\n 'perspective',\n 'perspective-origin',\n 'right',\n 'rotate',\n 'row-gap',\n 'scale',\n 'scroll-margin',\n 'scroll-margin-block',\n 'scroll-margin-block-end',\n 'scroll-margin-block-start',\n 'scroll-margin-bottom',\n 'scroll-margin-inline',\n 'scroll-margin-inline-end',\n 'scroll-margin-inline-start',\n 'scroll-margin-left',\n 'scroll-margin-right',\n 'scroll-margin-top',\n 'scroll-padding',\n 'scroll-padding-block',\n 'scroll-padding-block-end',\n 'scroll-padding-block-start',\n 'scroll-padding-bottom',\n 'scroll-padding-inline',\n 'scroll-padding-inline-end',\n 'scroll-padding-inline-start',\n 'scroll-padding-left',\n 'scroll-padding-right',\n 'scroll-padding-top',\n 'scroll-snap-coordinate',\n 'scroll-snap-destination',\n 'scrollbar-color',\n 'shape-image-threshold',\n 'shape-margin',\n 'shape-outside',\n 'tab-size',\n 'text-decoration',\n 'text-decoration-color',\n 'text-decoration-thickness',\n 'text-emphasis',\n 'text-emphasis-color',\n 'text-indent',\n 'text-shadow',\n 'text-underline-offset',\n 'top',\n 'transform',\n 'transform-origin',\n 'translate',\n 'vertical-align',\n 'visibility',\n 'width',\n 'word-spacing',\n 'z-index',\n 'zoom',\n]);\n\nfunction optimizeGroupPlayer(players) {\n switch (players.length) {\n case 0:\n return new NoopAnimationPlayer();\n case 1:\n return players[0];\n default:\n return new ɵAnimationGroupPlayer(players);\n }\n}\nfunction normalizeKeyframes$1(normalizer, keyframes, preStyles = new Map(), postStyles = new Map()) {\n const errors = [];\n const normalizedKeyframes = [];\n let previousOffset = -1;\n let previousKeyframe = null;\n keyframes.forEach((kf) => {\n const offset = kf.get('offset');\n const isSameOffset = offset == previousOffset;\n const normalizedKeyframe = (isSameOffset && previousKeyframe) || new Map();\n kf.forEach((val, prop) => {\n let normalizedProp = prop;\n let normalizedValue = val;\n if (prop !== 'offset') {\n normalizedProp = normalizer.normalizePropertyName(normalizedProp, errors);\n switch (normalizedValue) {\n case ɵPRE_STYLE:\n normalizedValue = preStyles.get(prop);\n break;\n case AUTO_STYLE:\n normalizedValue = postStyles.get(prop);\n break;\n default:\n normalizedValue = normalizer.normalizeStyleValue(prop, normalizedProp, normalizedValue, errors);\n break;\n }\n }\n normalizedKeyframe.set(normalizedProp, normalizedValue);\n });\n if (!isSameOffset) {\n normalizedKeyframes.push(normalizedKeyframe);\n }\n previousKeyframe = normalizedKeyframe;\n previousOffset = offset;\n });\n if (errors.length) {\n throw animationFailed(errors);\n }\n return normalizedKeyframes;\n}\nfunction listenOnPlayer(player, eventName, event, callback) {\n switch (eventName) {\n case 'start':\n player.onStart(() => callback(event && copyAnimationEvent(event, 'start', player)));\n break;\n case 'done':\n player.onDone(() => callback(event && copyAnimationEvent(event, 'done', player)));\n break;\n case 'destroy':\n player.onDestroy(() => callback(event && copyAnimationEvent(event, 'destroy', player)));\n break;\n }\n}\nfunction copyAnimationEvent(e, phaseName, player) {\n const totalTime = player.totalTime;\n const disabled = player.disabled ? true : false;\n const event = makeAnimationEvent(e.element, e.triggerName, e.fromState, e.toState, phaseName || e.phaseName, totalTime == undefined ? e.totalTime : totalTime, disabled);\n const data = e['_data'];\n if (data != null) {\n event['_data'] = data;\n }\n return event;\n}\nfunction makeAnimationEvent(element, triggerName, fromState, toState, phaseName = '', totalTime = 0, disabled) {\n return { element, triggerName, fromState, toState, phaseName, totalTime, disabled: !!disabled };\n}\nfunction getOrSetDefaultValue(map, key, defaultValue) {\n let value = map.get(key);\n if (!value) {\n map.set(key, (value = defaultValue));\n }\n return value;\n}\nfunction parseTimelineCommand(command) {\n const separatorPos = command.indexOf(':');\n const id = command.substring(1, separatorPos);\n const action = command.slice(separatorPos + 1);\n return [id, action];\n}\nconst documentElement = /* @__PURE__ */ (() => typeof document === 'undefined' ? null : document.documentElement)();\nfunction getParentElement(element) {\n const parent = element.parentNode || element.host || null; // consider host to support shadow DOM\n if (parent === documentElement) {\n return null;\n }\n return parent;\n}\nfunction containsVendorPrefix(prop) {\n // Webkit is the only real popular vendor prefix nowadays\n // cc: http://shouldiprefix.com/\n return prop.substring(1, 6) == 'ebkit'; // webkit or Webkit\n}\nlet _CACHED_BODY = null;\nlet _IS_WEBKIT = false;\nfunction validateStyleProperty(prop) {\n if (!_CACHED_BODY) {\n _CACHED_BODY = getBodyNode() || {};\n _IS_WEBKIT = _CACHED_BODY.style ? 'WebkitAppearance' in _CACHED_BODY.style : false;\n }\n let result = true;\n if (_CACHED_BODY.style && !containsVendorPrefix(prop)) {\n result = prop in _CACHED_BODY.style;\n if (!result && _IS_WEBKIT) {\n const camelProp = 'Webkit' + prop.charAt(0).toUpperCase() + prop.slice(1);\n result = camelProp in _CACHED_BODY.style;\n }\n }\n return result;\n}\nfunction validateWebAnimatableStyleProperty(prop) {\n return ANIMATABLE_PROP_SET.has(prop);\n}\nfunction getBodyNode() {\n if (typeof document != 'undefined') {\n return document.body;\n }\n return null;\n}\nfunction containsElement(elm1, elm2) {\n while (elm2) {\n if (elm2 === elm1) {\n return true;\n }\n elm2 = getParentElement(elm2);\n }\n return false;\n}\nfunction invokeQuery(element, selector, multi) {\n if (multi) {\n return Array.from(element.querySelectorAll(selector));\n }\n const elem = element.querySelector(selector);\n return elem ? [elem] : [];\n}\nfunction hypenatePropsKeys(original) {\n const newMap = new Map();\n original.forEach((val, prop) => {\n const newProp = prop.replace(/([a-z])([A-Z])/g, '$1-$2');\n newMap.set(newProp, val);\n });\n return newMap;\n}\n\n/**\n * @publicApi\n *\n * `AnimationDriver` implentation for Noop animations\n */\nclass NoopAnimationDriver {\n /**\n * @returns Whether `prop` is a valid CSS property\n */\n validateStyleProperty(prop) {\n return validateStyleProperty(prop);\n }\n /**\n * @deprecated unused\n */\n matchesElement(_element, _selector) {\n // This method is deprecated and no longer in use so we return false.\n return false;\n }\n /**\n *\n * @returns Whether elm1 contains elm2.\n */\n containsElement(elm1, elm2) {\n return containsElement(elm1, elm2);\n }\n /**\n * @returns Rhe parent of the given element or `null` if the element is the `document`\n */\n getParentElement(element) {\n return getParentElement(element);\n }\n /**\n * @returns The result of the query selector on the element. The array will contain up to 1 item\n * if `multi` is `false`.\n */\n query(element, selector, multi) {\n return invokeQuery(element, selector, multi);\n }\n /**\n * @returns The `defaultValue` or empty string\n */\n computeStyle(element, prop, defaultValue) {\n return defaultValue || '';\n }\n /**\n * @returns An `NoopAnimationPlayer`\n */\n animate(element, keyframes, duration, delay, easing, previousPlayers = [], scrubberAccessRequested) {\n return new NoopAnimationPlayer(duration, delay);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: NoopAnimationDriver, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: NoopAnimationDriver }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.12\", ngImport: i0, type: NoopAnimationDriver, decorators: [{\n type: Injectable\n }] });\n/**\n * @publicApi\n */\nclass AnimationDriver {\n /**\n * @deprecated Use the NoopAnimationDriver class.\n */\n static { this.NOOP = new NoopAnimationDriver(); }\n}\n\nclass AnimationStyleNormalizer {\n}\nclass NoopAnimationStyleNormalizer {\n normalizePropertyName(propertyName, errors) {\n return propertyName;\n }\n normalizeStyleValue(userProvidedProperty, normalizedProperty, value, errors) {\n return value;\n }\n}\n\nconst ONE_SECOND = 1000;\nconst SUBSTITUTION_EXPR_START = '{{';\nconst SUBSTITUTION_EXPR_END = '}}';\nconst ENTER_CLASSNAME = 'ng-enter';\nconst LEAVE_CLASSNAME = 'ng-leave';\nconst NG_TRIGGER_CLASSNAME = 'ng-trigger';\nconst NG_TRIGGER_SELECTOR = '.ng-trigger';\nconst NG_ANIMATING_CLASSNAME = 'ng-animating';\nconst NG_ANIMATING_SELECTOR = '.ng-animating';\nfunction resolveTimingValue(value) {\n if (typeof value == 'number')\n return value;\n const matches = value.match(/^(-?[\\.\\d]+)(m?s)/);\n if (!matches || matches.length < 2)\n return 0;\n return _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n}\nfunction _convertTimeValueToMS(value, unit) {\n switch (unit) {\n case 's':\n return value * ONE_SECOND;\n default: // ms or something else\n return value;\n }\n}\nfunction resolveTiming(timings, errors, allowNegativeValues) {\n return timings.hasOwnProperty('duration')\n ? timings\n : parseTimeExpression(timings, errors, allowNegativeValues);\n}\nfunction parseTimeExpression(exp, errors, allowNegativeValues) {\n const regex = /^(-?[\\.\\d]+)(m?s)(?:\\s+(-?[\\.\\d]+)(m?s))?(?:\\s+([-a-z]+(?:\\(.+?\\))?))?$/i;\n let duration;\n let delay = 0;\n let easing = '';\n if (typeof exp === 'string') {\n const matches = exp.match(regex);\n if (matches === null) {\n errors.push(invalidTimingValue(exp));\n return { duration: 0, delay: 0, easing: '' };\n }\n duration = _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n const delayMatch = matches[3];\n if (delayMatch != null) {\n delay = _convertTimeValueToMS(parseFloat(delayMatch), matches[4]);\n }\n const easingVal = matches[5];\n if (easingVal) {\n easing = easingVal;\n }\n }\n else {\n duration = exp;\n }\n if (!allowNegativeValues) {\n let containsErrors = false;\n let startIndex = errors.length;\n if (duration < 0) {\n errors.push(negativeStepValue());\n containsErrors = true;\n }\n if (delay < 0) {\n errors.push(negativeDelayValue());\n containsErrors = true;\n }\n if (containsErrors) {\n errors.splice(startIndex, 0, invalidTimingValue(exp));\n }\n }\n return { duration, delay, easing };\n}\nfunction normalizeKeyframes(keyframes) {\n if (!keyframes.length) {\n return [];\n }\n if (keyframes[0] instanceof Map) {\n return keyframes;\n }\n return keyframes.map((kf) => new Map(Object.entries(kf)));\n}\nfunction normalizeStyles(styles) {\n return Array.isArray(styles) ? new Map(...styles) : new Map(styles);\n}\nfunction setStyles(element, styles, formerStyles) {\n styles.forEach((val, prop) => {\n const camelProp = dashCaseToCamelCase(prop);\n if (formerStyles && !formerStyles.has(prop)) {\n formerStyles.set(prop, element.style[camelProp]);\n }\n element.style[camelProp] = val;\n });\n}\nfunction eraseStyles(element, styles) {\n styles.forEach((_, prop) => {\n const camelProp = dashCaseToCamelCase(prop);\n element.style[camelProp] = '';\n });\n}\nfunction normalizeAnimationEntry(steps) {\n if (Array.isArray(steps)) {\n if (steps.length == 1)\n return steps[0];\n return sequence(steps);\n }\n return steps;\n}\nfunction validateStyleParams(value, options, errors) {\n const params = options.params || {};\n const matches = extractStyleParams(value);\n if (matches.length) {\n matches.forEach((varName) => {\n if (!params.hasOwnProperty(varName)) {\n errors.push(invalidStyleParams(varName));\n }\n });\n }\n}\nconst PARAM_REGEX = new RegExp(`${SUBSTITUTION_EXPR_START}\\\\s*(.+?)\\\\s*${SUBSTITUTION_EXPR_END}`, 'g');\nfunction extractStyleParams(value) {\n let params = [];\n if (typeof value === 'string') {\n let match;\n while ((match = PARAM_REGEX.exec(value))) {\n params.push(match[1]);\n }\n PARAM_REGEX.lastIndex = 0;\n }\n return params;\n}\nfunction interpolateParams(value, params, errors) {\n const original = `${value}`;\n const str = original.replace(PARAM_REGEX, (_, varName) => {\n let localVal = params[varName];\n // this means that the value was never overridden by the data passed in by the user\n if (localVal == null) {\n errors.push(invalidParamValue(varName));\n localVal = '';\n }\n return localVal.toString();\n });\n // we do this to assert that numeric values stay as they are\n return str == original ? value : str;\n}\nconst DASH_CASE_REGEXP = /-+([a-z0-9])/g;\nfunction dashCaseToCamelCase(input) {\n return input.replace(DASH_CASE_REGEXP, (...m) => m[1].toUpperCase());\n}\nfunction camelCaseToDashCase(input) {\n return input.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();\n}\nfunction allowPreviousPlayerStylesMerge(duration, delay) {\n return duration === 0 || delay === 0;\n}\nfunction balancePreviousStylesIntoKeyframes(element, keyframes, previousStyles) {\n if (previousStyles.size && keyframes.length) {\n let startingKeyframe = keyframes[0];\n let missingStyleProps = [];\n previousStyles.forEach((val, prop) => {\n if (!startingKeyframe.has(prop)) {\n missingStyleProps.push(prop);\n }\n startingKeyframe.set(prop, val);\n });\n if (missingStyleProps.length) {\n for (let i = 1; i < keyframes.length; i++) {\n let kf = keyframes[i];\n missingStyleProps.forEach((prop) => kf.set(prop, computeStyle(element, prop)));\n }\n }\n }\n return keyframes;\n}\nfunction visitDslNode(visitor, node, context) {\n switch (node.type) {\n case AnimationMetadataType.Trigger:\n return visitor.visitTrigger(node, context);\n case AnimationMetadataType.State:\n return visitor.visitState(node, context);\n case AnimationMetadataType.Transition:\n return visitor.visitTransition(node, context);\n case AnimationMetadataType.Sequence:\n return visitor.visitSequence(node, context);\n case AnimationMetadataType.Group:\n return visitor.visitGroup(node, context);\n case AnimationMetadataType.Animate:\n return visitor.visitAnimate(node, context);\n case AnimationMetadataType.Keyframes:\n return visitor.visitKeyframes(node, context);\n case AnimationMetadataType.Style:\n return visitor.visitStyle(node, context);\n case AnimationMetadataType.Reference:\n return visitor.visitReference(node, context);\n case AnimationMetadataType.AnimateChild:\n return visitor.visitAnimateChild(node, context);\n case AnimationMetadataType.AnimateRef:\n return visitor.visitAnimateRef(node, context);\n case AnimationMetadataType.Query:\n return visitor.visitQuery(node, context);\n case AnimationMetadataType.Stagger:\n return visitor.visitStagger(node, context);\n default:\n throw invalidNodeType(node.type);\n }\n}\nfunction computeStyle(element, prop) {\n return window.getComputedStyle(element)[prop];\n}\n\nconst DIMENSIONAL_PROP_SET = new Set([\n 'width',\n 'height',\n 'minWidth',\n 'minHeight',\n 'maxWidth',\n 'maxHeight',\n 'left',\n 'top',\n 'bottom',\n 'right',\n 'fontSize',\n 'outlineWidth',\n 'outlineOffset',\n 'paddingTop',\n 'paddingLeft',\n 'paddingBottom',\n 'paddingRight',\n 'marginTop',\n 'marginLeft',\n 'marginBottom',\n 'marginRight',\n 'borderRadius',\n 'borderWidth',\n 'borderTopWidth',\n 'borderLeftWidth',\n 'borderRightWidth',\n 'borderBottomWidth',\n 'textIndent',\n 'perspective',\n]);\nclass WebAnimationsStyleNormalizer extends AnimationStyleNormalizer {\n normalizePropertyName(propertyName, errors) {\n return dashCaseToCamelCase(propertyName);\n }\n normalizeStyleValue(userProvidedProperty, normalizedProperty, value, errors) {\n let unit = '';\n const strVal = value.toString().trim();\n if (DIMENSIONAL_PROP_SET.has(normalizedProperty) && value !== 0 && value !== '0') {\n if (typeof value === 'number') {\n unit = 'px';\n }\n else {\n const valAndSuffixMatch = value.match(/^[+-]?[\\d\\.]+([a-z]*)$/);\n if (valAndSuffixMatch && valAndSuffixMatch[1].length == 0) {\n errors.push(invalidCssUnitValue(userProvidedProperty, value));\n }\n }\n }\n return strVal + unit;\n }\n}\n\nfunction createListOfWarnings(warnings) {\n const LINE_START = '\\n - ';\n return `${LINE_START}${warnings\n .filter(Boolean)\n .map((warning) => warning)\n .join(LINE_START)}`;\n}\nfunction warnValidation(warnings) {\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n console.warn(`animation validation warnings:${createListOfWarnings(warnings)}`);\n}\nfunction warnTriggerBuild(name, warnings) {\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n console.warn(`The animation trigger \"${name}\" has built with the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction warnRegister(warnings) {\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n console.warn(`Animation built with the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction triggerParsingWarnings(name, warnings) {\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n console.warn(`Animation parsing for the ${name} trigger presents the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction pushUnrecognizedPropertiesWarning(warnings, props) {\n if (props.length) {\n warnings.push(`The following provided properties are not recognized: ${props.join(', ')}`);\n }\n}\n\nconst ANY_STATE = '*';\nfunction parseTransitionExpr(transitionValue, errors) {\n const expressions = [];\n if (typeof transitionValue == 'string') {\n transitionValue\n .split(/\\s*,\\s*/)\n .forEach((str) => parseInnerTransitionStr(str, expressions, errors));\n }\n else {\n expressions.push(transitionValue);\n }\n return expressions;\n}\nfunction parseInnerTransitionStr(eventStr, expressions, errors) {\n if (eventStr[0] == ':') {\n const result = parseAnimationAlias(eventStr, errors);\n if (typeof result == 'function') {\n expressions.push(result);\n return;\n }\n eventStr = result;\n }\n const match = eventStr.match(/^(\\*|[-\\w]+)\\s*()\\s*(\\*|[-\\w]+)$/);\n if (match == null || match.length < 4) {\n errors.push(invalidExpression(eventStr));\n return expressions;\n }\n const fromState = match[1];\n const separator = match[2];\n const toState = match[3];\n expressions.push(makeLambdaFromStates(fromState, toState));\n const isFullAnyStateExpr = fromState == ANY_STATE && toState == ANY_STATE;\n if (separator[0] == '<' && !isFullAnyStateExpr) {\n expressions.push(makeLambdaFromStates(toState, fromState));\n }\n return;\n}\nfunction parseAnimationAlias(alias, errors) {\n switch (alias) {\n case ':enter':\n return 'void => *';\n case ':leave':\n return '* => void';\n case ':increment':\n return (fromState, toState) => parseFloat(toState) > parseFloat(fromState);\n case ':decrement':\n return (fromState, toState) => parseFloat(toState) < parseFloat(fromState);\n default:\n errors.push(invalidTransitionAlias(alias));\n return '* => *';\n }\n}\n// DO NOT REFACTOR ... keep the follow set instantiations\n// with the values intact (closure compiler for some reason\n// removes follow-up lines that add the values outside of\n// the constructor...\nconst TRUE_BOOLEAN_VALUES = new Set(['true', '1']);\nconst FALSE_BOOLEAN_VALUES = new Set(['false', '0']);\nfunction makeLambdaFromStates(lhs, rhs) {\n const LHS_MATCH_BOOLEAN = TRUE_BOOLEAN_VALUES.has(lhs) || FALSE_BOOLEAN_VALUES.has(lhs);\n const RHS_MATCH_BOOLEAN = TRUE_BOOLEAN_VALUES.has(rhs) || FALSE_BOOLEAN_VALUES.has(rhs);\n return (fromState, toState) => {\n let lhsMatch = lhs == ANY_STATE || lhs == fromState;\n let rhsMatch = rhs == ANY_STATE || rhs == toState;\n if (!lhsMatch && LHS_MATCH_BOOLEAN && typeof fromState === 'boolean') {\n lhsMatch = fromState ? TRUE_BOOLEAN_VALUES.has(lhs) : FALSE_BOOLEAN_VALUES.has(lhs);\n }\n if (!rhsMatch && RHS_MATCH_BOOLEAN && typeof toState === 'boolean') {\n rhsMatch = toState ? TRUE_BOOLEAN_VALUES.has(rhs) : FALSE_BOOLEAN_VALUES.has(rhs);\n }\n return lhsMatch && rhsMatch;\n };\n}\n\nconst SELF_TOKEN = ':self';\nconst SELF_TOKEN_REGEX = new RegExp(`s*${SELF_TOKEN}s*,?`, 'g');\n/*\n * [Validation]\n * The visitor code below will traverse the animation AST generated by the animation verb functions\n * (the output is a tree of objects) and attempt to perform a series of validations on the data. The\n * following corner-cases will be validated:\n *\n * 1. Overlap of animations\n * Given that a CSS property cannot be animated in more than one place at the same time, it's\n * important that this behavior is detected and validated. The way in which this occurs is that\n * each time a style property is examined, a string-map containing the property will be updated with\n * the start and end times for when the property is used within an animation step.\n *\n * If there are two or more parallel animations that are currently running (these are invoked by the\n * group()) on the same element then the validator will throw an error. Since the start/end timing\n * values are collected for each property then if the current animation step is animating the same\n * property and its timing values fall anywhere into the window of time that the property is\n * currently being animated within then this is what causes an error.\n *\n * 2. Timing values\n * The validator will validate to see if a timing value of `duration delay easing` or\n * `durationNumber` is valid or not.\n *\n * (note that upon validation the code below will replace the timing data with an object containing\n * {duration,delay,easing}.\n *\n * 3. Offset Validation\n * Each of the style() calls are allowed to have an offset value when placed inside of keyframes().\n * Offsets within keyframes() are considered valid when:\n *\n * - No offsets are used at all\n * - Each style() entry contains an offset value\n * - Each offset is between 0 and 1\n * - Each offset is greater to or equal than the previous one\n *\n * Otherwise an error will be thrown.\n */\nfunction buildAnimationAst(driver, metadata, errors, warnings) {\n return new AnimationAstBuilderVisitor(driver).build(metadata, errors, warnings);\n}\nconst ROOT_SELECTOR = '';\nclass AnimationAstBuilderVisitor {\n constructor(_driver) {\n this._driver = _driver;\n }\n build(metadata, errors, warnings) {\n const context = new AnimationAstBuilderContext(errors);\n this._resetContextStyleTimingState(context);\n const ast = (visitDslNode(this, normalizeAnimationEntry(metadata), context));\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (context.unsupportedCSSPropertiesFound.size) {\n pushUnrecognizedPropertiesWarning(warnings, [\n ...context.unsupportedCSSPropertiesFound.keys(),\n ]);\n }\n }\n return ast;\n }\n _resetContextStyleTimingState(context) {\n context.currentQuerySelector = ROOT_SELECTOR;\n context.collectedStyles = new Map();\n context.collectedStyles.set(ROOT_SELECTOR, new Map());\n context.currentTime = 0;\n }\n visitTrigger(metadata, context) {\n let queryCount = (context.queryCount = 0);\n let depCount = (context.depCount = 0);\n const states = [];\n const transitions = [];\n if (metadata.name.charAt(0) == '@') {\n context.errors.push(invalidTrigger());\n }\n metadata.definitions.forEach((def) => {\n this._resetContextStyleTimingState(context);\n if (def.type == AnimationMetadataType.State) {\n const stateDef = def;\n const name = stateDef.name;\n name\n .toString()\n .split(/\\s*,\\s*/)\n .forEach((n) => {\n stateDef.name = n;\n states.push(this.visitState(stateDef, context));\n });\n stateDef.name = name;\n }\n else if (def.type == AnimationMetadataType.Transition) {\n const transition = this.visitTransition(def, context);\n queryCount += transition.queryCount;\n depCount += transition.depCount;\n transitions.push(transition);\n }\n else {\n context.errors.push(invalidDefinition());\n }\n });\n return {\n type: AnimationMetadataType.Trigger,\n name: metadata.name,\n states,\n transitions,\n queryCount,\n depCount,\n options: null,\n };\n }\n visitState(metadata, context) {\n const styleAst = this.visitStyle(metadata.styles, context);\n const astParams = (metadata.options && metadata.options.params) || null;\n if (styleAst.containsDynamicStyles) {\n const missingSubs = new Set();\n const params = astParams || {};\n styleAst.styles.forEach((style) => {\n if (style instanceof Map) {\n style.forEach((value) => {\n extractStyleParams(value).forEach((sub) => {\n if (!params.hasOwnProperty(sub)) {\n missingSubs.add(sub);\n }\n });\n });\n }\n });\n if (missingSubs.size) {\n context.errors.push(invalidState(metadata.name, [...missingSubs.values()]));\n }\n }\n return {\n type: AnimationMetadataType.State,\n name: metadata.name,\n style: styleAst,\n options: astParams ? { params: astParams } : null,\n };\n }\n visitTransition(metadata, context) {\n context.queryCount = 0;\n context.depCount = 0;\n const animation = visitDslNode(this, normalizeAnimationEntry(metadata.animation), context);\n const matchers = parseTransitionExpr(metadata.expr, context.errors);\n return {\n type: AnimationMetadataType.Transition,\n matchers,\n animation,\n queryCount: context.queryCount,\n depCount: context.depCount,\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitSequence(metadata, context) {\n return {\n type: AnimationMetadataType.Sequence,\n steps: metadata.steps.map((s) => visitDslNode(this, s, context)),\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitGroup(metadata, context) {\n const currentTime = context.currentTime;\n let furthestTime = 0;\n const steps = metadata.steps.map((step) => {\n context.currentTime = currentTime;\n const innerAst = visitDslNode(this, step, context);\n furthestTime = Math.max(furthestTime, context.currentTime);\n return innerAst;\n });\n context.currentTime = furthestTime;\n return {\n type: AnimationMetadataType.Group,\n steps,\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitAnimate(metadata, context) {\n const timingAst = constructTimingAst(metadata.timings, context.errors);\n context.currentAnimateTimings = timingAst;\n let styleAst;\n let styleMetadata = metadata.styles\n ? metadata.styles\n : style({});\n if (styleMetadata.type == AnimationMetadataType.Keyframes) {\n styleAst = this.visitKeyframes(styleMetadata, context);\n }\n else {\n let styleMetadata = metadata.styles;\n let isEmpty = false;\n if (!styleMetadata) {\n isEmpty = true;\n const newStyleData = {};\n if (timingAst.easing) {\n newStyleData['easing'] = timingAst.easing;\n }\n styleMetadata = style(newStyleData);\n }\n context.currentTime += timingAst.duration + timingAst.delay;\n const _styleAst = this.visitStyle(styleMetadata, context);\n _styleAst.isEmptyStep = isEmpty;\n styleAst = _styleAst;\n }\n context.currentAnimateTimings = null;\n return {\n type: AnimationMetadataType.Animate,\n timings: timingAst,\n style: styleAst,\n options: null,\n };\n }\n visitStyle(metadata, context) {\n const ast = this._makeStyleAst(metadata, context);\n this._validateStyleAst(ast, context);\n return ast;\n }\n _makeStyleAst(metadata, context) {\n const styles = [];\n const metadataStyles = Array.isArray(metadata.styles) ? metadata.styles : [metadata.styles];\n for (let styleTuple of metadataStyles) {\n if (typeof styleTuple === 'string') {\n if (styleTuple === AUTO_STYLE) {\n styles.push(styleTuple);\n }\n else {\n context.errors.push(invalidStyleValue(styleTuple));\n }\n }\n else {\n styles.push(new Map(Object.entries(styleTuple)));\n }\n }\n let containsDynamicStyles = false;\n let collectedEasing = null;\n styles.forEach((styleData) => {\n if (styleData instanceof Map) {\n if (styleData.has('easing')) {\n collectedEasing = styleData.get('easing');\n styleData.delete('easing');\n }\n if (!containsDynamicStyles) {\n for (let value of styleData.values()) {\n if (value.toString().indexOf(SUBSTITUTION_EXPR_START) >= 0) {\n containsDynamicStyles = true;\n break;\n }\n }\n }\n }\n });\n return {\n type: AnimationMetadataType.Style,\n styles,\n easing: collectedEasing,\n offset: metadata.offset,\n containsDynamicStyles,\n options: null,\n };\n }\n _validateStyleAst(ast, context) {\n const timings = context.currentAnimateTimings;\n let endTime = context.currentTime;\n let startTime = context.currentTime;\n if (timings && startTime > 0) {\n startTime -= timings.duration + timings.delay;\n }\n ast.styles.forEach((tuple) => {\n if (typeof tuple === 'string')\n return;\n tuple.forEach((value, prop) => {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (!this._driver.validateStyleProperty(prop)) {\n tuple.delete(prop);\n context.unsupportedCSSPropertiesFound.add(prop);\n return;\n }\n }\n // This is guaranteed to have a defined Map at this querySelector location making it\n // safe to add the assertion here. It is set as a default empty map in prior methods.\n const collectedStyles = context.collectedStyles.get(context.currentQuerySelector);\n const collectedEntry = collectedStyles.get(prop);\n let updateCollectedStyle = true;\n if (collectedEntry) {\n if (startTime != endTime &&\n startTime >= collectedEntry.startTime &&\n endTime <= collectedEntry.endTime) {\n context.errors.push(invalidParallelAnimation(prop, collectedEntry.startTime, collectedEntry.endTime, startTime, endTime));\n updateCollectedStyle = false;\n }\n // we always choose the smaller start time value since we\n // want to have a record of the entire animation window where\n // the style property is being animated in between\n startTime = collectedEntry.startTime;\n }\n if (updateCollectedStyle) {\n collectedStyles.set(prop, { startTime, endTime });\n }\n if (context.options) {\n validateStyleParams(value, context.options, context.errors);\n }\n });\n });\n }\n visitKeyframes(metadata, context) {\n const ast = { type: AnimationMetadataType.Keyframes, styles: [], options: null };\n if (!context.currentAnimateTimings) {\n context.errors.push(invalidKeyframes());\n return ast;\n }\n const MAX_KEYFRAME_OFFSET = 1;\n let totalKeyframesWithOffsets = 0;\n const offsets = [];\n let offsetsOutOfOrder = false;\n let keyframesOutOfRange = false;\n let previousOffset = 0;\n const keyframes = metadata.steps.map((styles) => {\n const style = this._makeStyleAst(styles, context);\n let offsetVal = style.offset != null ? style.offset : consumeOffset(style.styles);\n let offset = 0;\n if (offsetVal != null) {\n totalKeyframesWithOffsets++;\n offset = style.offset = offsetVal;\n }\n keyframesOutOfRange = keyframesOutOfRange || offset < 0 || offset > 1;\n offsetsOutOfOrder = offsetsOutOfOrder || offset < previousOffset;\n previousOffset = offset;\n offsets.push(offset);\n return style;\n });\n if (keyframesOutOfRange) {\n context.errors.push(invalidOffset());\n }\n if (offsetsOutOfOrder) {\n context.errors.push(keyframeOffsetsOutOfOrder());\n }\n const length = metadata.steps.length;\n let generatedOffset = 0;\n if (totalKeyframesWithOffsets > 0 && totalKeyframesWithOffsets < length) {\n context.errors.push(keyframesMissingOffsets());\n }\n else if (totalKeyframesWithOffsets == 0) {\n generatedOffset = MAX_KEYFRAME_OFFSET / (length - 1);\n }\n const limit = length - 1;\n const currentTime = context.currentTime;\n const currentAnimateTimings = context.currentAnimateTimings;\n const animateDuration = currentAnimateTimings.duration;\n keyframes.forEach((kf, i) => {\n const offset = generatedOffset > 0 ? (i == limit ? 1 : generatedOffset * i) : offsets[i];\n const durationUpToThisFrame = offset * animateDuration;\n context.currentTime = currentTime + currentAnimateTimings.delay + durationUpToThisFrame;\n currentAnimateTimings.duration = durationUpToThisFrame;\n this._validateStyleAst(kf, context);\n kf.offset = offset;\n ast.styles.push(kf);\n });\n return ast;\n }\n visitReference(metadata, context) {\n return {\n type: AnimationMetadataType.Reference,\n animation: visitDslNode(this, normalizeAnimationEntry(metadata.animation), context),\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitAnimateChild(metadata, context) {\n context.depCount++;\n return {\n type: AnimationMetadataType.AnimateChild,\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitAnimateRef(metadata, context) {\n return {\n type: AnimationMetadataType.AnimateRef,\n animation: this.visitReference(metadata.animation, context),\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitQuery(metadata, context) {\n const parentSelector = context.currentQuerySelector;\n const options = (metadata.options || {});\n context.queryCount++;\n context.currentQuery = metadata;\n const [selector, includeSelf] = normalizeSelector(metadata.selector);\n context.currentQuerySelector = parentSelector.length\n ? parentSelector + ' ' + selector\n : selector;\n getOrSetDefaultValue(context.collectedStyles, context.currentQuerySelector, new Map());\n const animation = visitDslNode(this, normalizeAnimationEntry(metadata.animation), context);\n context.currentQuery = null;\n context.currentQuerySelector = parentSelector;\n return {\n type: AnimationMetadataType.Query,\n selector,\n limit: options.limit || 0,\n optional: !!options.optional,\n includeSelf,\n animation,\n originalSelector: metadata.selector,\n options: normalizeAnimationOptions(metadata.options),\n };\n }\n visitStagger(metadata, context) {\n if (!context.currentQuery) {\n context.errors.push(invalidStagger());\n }\n const timings = metadata.timings === 'full'\n ? { duration: 0, delay: 0, easing: 'full' }\n : resolveTiming(metadata.timings, context.errors, true);\n return {\n type: AnimationMetadataType.Stagger,\n animation: visitDslNode(this, normalizeAnimationEntry(metadata.animation), context),\n timings,\n options: null,\n };\n }\n}\nfunction normalizeSelector(selector) {\n const hasAmpersand = selector.split(/\\s*,\\s*/).find((token) => token == SELF_TOKEN)\n ? true\n : false;\n if (hasAmpersand) {\n selector = selector.replace(SELF_TOKEN_REGEX, '');\n }\n // Note: the :enter and :leave aren't normalized here since those\n // selectors are filled in at runtime during timeline building\n selector = selector\n .replace(/@\\*/g, NG_TRIGGER_SELECTOR)\n .replace(/@\\w+/g, (match) => NG_TRIGGER_SELECTOR + '-' + match.slice(1))\n .replace(/:animating/g, NG_ANIMATING_SELECTOR);\n return [selector, hasAmpersand];\n}\nfunction normalizeParams(obj) {\n return obj ? { ...obj } : null;\n}\nclass AnimationAstBuilderContext {\n constructor(errors) {\n this.errors = errors;\n this.queryCount = 0;\n this.depCount = 0;\n this.currentTransition = null;\n this.currentQuery = null;\n this.currentQuerySelector = null;\n this.currentAnimateTimings = null;\n this.currentTime = 0;\n this.collectedStyles = new Map();\n this.options = null;\n this.unsupportedCSSPropertiesFound = new Set();\n }\n}\nfunction consumeOffset(styles) {\n if (typeof styles == 'string')\n return null;\n let offset = null;\n if (Array.isArray(styles)) {\n styles.forEach((styleTuple) => {\n if (styleTuple instanceof Map && styleTuple.has('offset')) {\n const obj = styleTuple;\n offset = parseFloat(obj.get('offset'));\n obj.delete('offset');\n }\n });\n }\n else if (styles instanceof Map && styles.has('offset')) {\n const obj = styles;\n offset = parseFloat(obj.get('offset'));\n obj.delete('offset');\n }\n return offset;\n}\nfunction constructTimingAst(value, errors) {\n if (value.hasOwnProperty('duration')) {\n return value;\n }\n if (typeof value == 'number') {\n const duration = resolveTiming(value, errors).duration;\n return makeTimingAst(duration, 0, '');\n }\n const strValue = value;\n const isDynamic = strValue.split(/\\s+/).some((v) => v.charAt(0) == '{' && v.charAt(1) == '{');\n if (isDynamic) {\n const ast = makeTimingAst(0, 0, '');\n ast.dynamic = true;\n ast.strValue = strValue;\n return ast;\n }\n const timings = resolveTiming(strValue, errors);\n return makeTimingAst(timings.duration, timings.delay, timings.easing);\n}\nfunction normalizeAnimationOptions(options) {\n if (options) {\n options = { ...options };\n if (options['params']) {\n options['params'] = normalizeParams(options['params']);\n }\n }\n else {\n options = {};\n }\n return options;\n}\nfunction makeTimingAst(duration, delay, easing) {\n return { duration, delay, easing };\n}\n\nfunction createTimelineInstruction(element, keyframes, preStyleProps, postStyleProps, duration, delay, easing = null, subTimeline = false) {\n return {\n type: 1 /* AnimationTransitionInstructionType.TimelineAnimation */,\n element,\n keyframes,\n preStyleProps,\n postStyleProps,\n duration,\n delay,\n totalTime: duration + delay,\n easing,\n subTimeline,\n };\n}\n\nclass ElementInstructionMap {\n constructor() {\n this._map = new Map();\n }\n get(element) {\n return this._map.get(element) || [];\n }\n append(element, instructions) {\n let existingInstructions = this._map.get(element);\n if (!existingInstructions) {\n this._map.set(element, (existingInstructions = []));\n }\n existingInstructions.push(...instructions);\n }\n has(element) {\n return this._map.has(element);\n }\n clear() {\n this._map.clear();\n }\n}\n\nconst ONE_FRAME_IN_MILLISECONDS = 1;\nconst ENTER_TOKEN = ':enter';\nconst ENTER_TOKEN_REGEX = new RegExp(ENTER_TOKEN, 'g');\nconst LEAVE_TOKEN = ':leave';\nconst LEAVE_TOKEN_REGEX = new RegExp(LEAVE_TOKEN, 'g');\n/*\n * The code within this file aims to generate web-animations-compatible keyframes from Angular's\n * animation DSL code.\n *\n * The code below will be converted from:\n *\n * ```\n * sequence([\n * style({ opacity: 0 }),\n * animate(1000, style({ opacity: 0 }))\n * ])\n * ```\n *\n * To:\n * ```\n * keyframes = [{ opacity: 0, offset: 0 }, { opacity: 1, offset: 1 }]\n * duration = 1000\n * delay = 0\n * easing = ''\n * ```\n *\n * For this operation to cover the combination of animation verbs (style, animate, group, etc...) a\n * combination of AST traversal and merge-sort-like algorithms are used.\n *\n * [AST Traversal]\n * Each of the animation verbs, when executed, will return an string-map object representing what\n * type of action it is (style, animate, group, etc...) and the data associated with it. This means\n * that when functional composition mix of these functions is evaluated (like in the example above)\n * then it will end up producing a tree of objects representing the animation itself.\n *\n * When this animation object tree is processed by the visitor code below it will visit each of the\n * verb statements within the visitor. And during each visit it will build the context of the\n * animation keyframes by interacting with the `TimelineBuilder`.\n *\n * [TimelineBuilder]\n * This class is responsible for tracking the styles and building a series of keyframe objects for a\n * timeline between a start and end time. The builder starts off with an initial timeline and each\n * time the AST comes across a `group()`, `keyframes()` or a combination of the two within a\n * `sequence()` then it will generate a sub timeline for each step as well as a new one after\n * they are complete.\n *\n * As the AST is traversed, the timing state on each of the timelines will be incremented. If a sub\n * timeline was created (based on one of the cases above) then the parent timeline will attempt to\n * merge the styles used within the sub timelines into itself (only with group() this will happen).\n * This happens with a merge operation (much like how the merge works in mergeSort) and it will only\n * copy the most recently used styles from the sub timelines into the parent timeline. This ensures\n * that if the styles are used later on in another phase of the animation then they will be the most\n * up-to-date values.\n *\n * [How Missing Styles Are Updated]\n * Each timeline has a `backFill` property which is responsible for filling in new styles into\n * already processed keyframes if a new style shows up later within the animation sequence.\n *\n * ```\n * sequence([\n * style({ width: 0 }),\n * animate(1000, style({ width: 100 })),\n * animate(1000, style({ width: 200 })),\n * animate(1000, style({ width: 300 }))\n * animate(1000, style({ width: 400, height: 400 })) // notice how `height` doesn't exist anywhere\n * else\n * ])\n * ```\n *\n * What is happening here is that the `height` value is added later in the sequence, but is missing\n * from all previous animation steps. Therefore when a keyframe is created it would also be missing\n * from all previous keyframes up until where it is first used. For the timeline keyframe generation\n * to properly fill in the style it will place the previous value (the value from the parent\n * timeline) or a default value of `*` into the backFill map.\n *\n * When a sub-timeline is created it will have its own backFill property. This is done so that\n * styles present within the sub-timeline do not accidentally seep into the previous/future timeline\n * keyframes\n *\n * [Validation]\n * The code in this file is not responsible for validation. That functionality happens with within\n * the `AnimationValidatorVisitor` code.\n */\nfunction buildAnimationTimelines(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles = new Map(), finalStyles = new Map(), options, subInstructions, errors = []) {\n return new AnimationTimelineBuilderVisitor().buildKeyframes(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles, finalStyles, options, subInstructions, errors);\n}\nclass AnimationTimelineBuilderVisitor {\n buildKeyframes(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles, finalStyles, options, subInstructions, errors = []) {\n subInstructions = subInstructions || new ElementInstructionMap();\n const context = new AnimationTimelineContext(driver, rootElement, subInstructions, enterClassName, leaveClassName, errors, []);\n context.options = options;\n const delay = options.delay ? resolveTimingValue(options.delay) : 0;\n context.currentTimeline.delayNextStep(delay);\n context.currentTimeline.setStyles([startingStyles], null, context.errors, options);\n visitDslNode(this, ast, context);\n // this checks to see if an actual animation happened\n const timelines = context.timelines.filter((timeline) => timeline.containsAnimation());\n // note: we just want to apply the final styles for the rootElement, so we do not\n // just apply the styles to the last timeline but the last timeline which\n // element is the root one (basically `*`-styles are replaced with the actual\n // state style values only for the root element)\n if (timelines.length && finalStyles.size) {\n let lastRootTimeline;\n for (let i = timelines.length - 1; i >= 0; i--) {\n const timeline = timelines[i];\n if (timeline.element === rootElement) {\n lastRootTimeline = timeline;\n break;\n }\n }\n if (lastRootTimeline && !lastRootTimeline.allowOnlyTimelineStyles()) {\n lastRootTimeline.setStyles([finalStyles], null, context.errors, options);\n }\n }\n return timelines.length\n ? timelines.map((timeline) => timeline.buildKeyframes())\n : [createTimelineInstruction(rootElement, [], [], [], 0, delay, '', false)];\n }\n visitTrigger(ast, context) {\n // these values are not visited in this AST\n }\n visitState(ast, context) {\n // these values are not visited in this AST\n }\n visitTransition(ast, context) {\n // these values are not visited in this AST\n }\n visitAnimateChild(ast, context) {\n const elementInstructions = context.subInstructions.get(context.element);\n if (elementInstructions) {\n const innerContext = context.createSubContext(ast.options);\n const startTime = context.currentTimeline.currentTime;\n const endTime = this._visitSubInstructions(elementInstructions, innerContext, innerContext.options);\n if (startTime != endTime) {\n // we do this on the upper context because we created a sub context for\n // the sub child animations\n context.transformIntoNewTimeline(endTime);\n }\n }\n context.previousNode = ast;\n }\n visitAnimateRef(ast, context) {\n const innerContext = context.createSubContext(ast.options);\n innerContext.transformIntoNewTimeline();\n this._applyAnimationRefDelays([ast.options, ast.animation.options], context, innerContext);\n this.visitReference(ast.animation, innerContext);\n context.transformIntoNewTimeline(innerContext.currentTimeline.currentTime);\n context.previousNode = ast;\n }\n _applyAnimationRefDelays(animationsRefsOptions, context, innerContext) {\n for (const animationRefOptions of animationsRefsOptions) {\n const animationDelay = animationRefOptions?.delay;\n if (animationDelay) {\n const animationDelayValue = typeof animationDelay === 'number'\n ? animationDelay\n : resolveTimingValue(interpolateParams(animationDelay, animationRefOptions?.params ?? {}, context.errors));\n innerContext.delayNextStep(animationDelayValue);\n }\n }\n }\n _visitSubInstructions(instructions, context, options) {\n const startTime = context.currentTimeline.currentTime;\n let furthestTime = startTime;\n // this is a special-case for when a user wants to skip a sub\n // animation from being fired entirely.\n const duration = options.duration != null ? resolveTimingValue(options.duration) : null;\n const delay = options.delay != null ? resolveTimingValue(options.delay) : null;\n if (duration !== 0) {\n instructions.forEach((instruction) => {\n const instructionTimings = context.appendInstructionToTimeline(instruction, duration, delay);\n furthestTime = Math.max(furthestTime, instructionTimings.duration + instructionTimings.delay);\n });\n }\n return furthestTime;\n }\n visitReference(ast, context) {\n context.updateOptions(ast.options, true);\n visitDslNode(this, ast.animation, context);\n context.previousNode = ast;\n }\n visitSequence(ast, context) {\n const subContextCount = context.subContextCount;\n let ctx = context;\n const options = ast.options;\n if (options && (options.params || options.delay)) {\n ctx = context.createSubContext(options);\n ctx.transformIntoNewTimeline();\n if (options.delay != null) {\n if (ctx.previousNode.type == AnimationMetadataType.Style) {\n ctx.currentTimeline.snapshotCurrentStyles();\n ctx.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n }\n const delay = resolveTimingValue(options.delay);\n ctx.delayNextStep(delay);\n }\n }\n if (ast.steps.length) {\n ast.steps.forEach((s) => visitDslNode(this, s, ctx));\n // this is here just in case the inner steps only contain or end with a style() call\n ctx.currentTimeline.applyStylesToKeyframe();\n // this means that some animation function within the sequence\n // ended up creating a sub timeline (which means the current\n // timeline cannot overlap with the contents of the sequence)\n if (ctx.subContextCount > subContextCount) {\n ctx.transformIntoNewTimeline();\n }\n }\n context.previousNode = ast;\n }\n visitGroup(ast, context) {\n const innerTimelines = [];\n let furthestTime = context.currentTimeline.currentTime;\n const delay = ast.options && ast.options.delay ? resolveTimingValue(ast.options.delay) : 0;\n ast.steps.forEach((s) => {\n const innerContext = context.createSubContext(ast.options);\n if (delay) {\n innerContext.delayNextStep(delay);\n }\n visitDslNode(this, s, innerContext);\n furthestTime = Math.max(furthestTime, innerContext.currentTimeline.currentTime);\n innerTimelines.push(innerContext.currentTimeline);\n });\n // this operation is run after the AST loop because otherwise\n // if the parent timeline's collected styles were updated then\n // it would pass in invalid data into the new-to-be forked items\n innerTimelines.forEach((timeline) => context.currentTimeline.mergeTimelineCollectedStyles(timeline));\n context.transformIntoNewTimeline(furthestTime);\n context.previousNode = ast;\n }\n _visitTiming(ast, context) {\n if (ast.dynamic) {\n const strValue = ast.strValue;\n const timingValue = context.params\n ? interpolateParams(strValue, context.params, context.errors)\n : strValue;\n return resolveTiming(timingValue, context.errors);\n }\n else {\n return { duration: ast.duration, delay: ast.delay, easing: ast.easing };\n }\n }\n visitAnimate(ast, context) {\n const timings = (context.currentAnimateTimings = this._visitTiming(ast.timings, context));\n const timeline = context.currentTimeline;\n if (timings.delay) {\n context.incrementTime(timings.delay);\n timeline.snapshotCurrentStyles();\n }\n const style = ast.style;\n if (style.type == AnimationMetadataType.Keyframes) {\n this.visitKeyframes(style, context);\n }\n else {\n context.incrementTime(timings.duration);\n this.visitStyle(style, context);\n timeline.applyStylesToKeyframe();\n }\n context.currentAnimateTimings = null;\n context.previousNode = ast;\n }\n visitStyle(ast, context) {\n const timeline = context.currentTimeline;\n const timings = context.currentAnimateTimings;\n // this is a special case for when a style() call\n // directly follows an animate() call (but not inside of an animate() call)\n if (!timings && timeline.hasCurrentStyleProperties()) {\n timeline.forwardFrame();\n }\n const easing = (timings && timings.easing) || ast.easing;\n if (ast.isEmptyStep) {\n timeline.applyEmptyStep(easing);\n }\n else {\n timeline.setStyles(ast.styles, easing, context.errors, context.options);\n }\n context.previousNode = ast;\n }\n visitKeyframes(ast, context) {\n const currentAnimateTimings = context.currentAnimateTimings;\n const startTime = context.currentTimeline.duration;\n const duration = currentAnimateTimings.duration;\n const innerContext = context.createSubContext();\n const innerTimeline = innerContext.currentTimeline;\n innerTimeline.easing = currentAnimateTimings.easing;\n ast.styles.forEach((step) => {\n const offset = step.offset || 0;\n innerTimeline.forwardTime(offset * duration);\n innerTimeline.setStyles(step.styles, step.easing, context.errors, context.options);\n innerTimeline.applyStylesToKeyframe();\n });\n // this will ensure that the parent timeline gets all the styles from\n // the child even if the new timeline below is not used\n context.currentTimeline.mergeTimelineCollectedStyles(innerTimeline);\n // we do this because the window between this timeline and the sub timeline\n // should ensure that the styles within are exactly the same as they were before\n context.transformIntoNewTimeline(startTime + duration);\n context.previousNode = ast;\n }\n visitQuery(ast, context) {\n // in the event that the first step before this is a style step we need\n // to ensure the styles are applied before the children are animated\n const startTime = context.currentTimeline.currentTime;\n const options = (ast.options || {});\n const delay = options.delay ? resolveTimingValue(options.delay) : 0;\n if (delay &&\n (context.previousNode.type === AnimationMetadataType.Style ||\n (startTime == 0 && context.currentTimeline.hasCurrentStyleProperties()))) {\n context.currentTimeline.snapshotCurrentStyles();\n context.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n }\n let furthestTime = startTime;\n const elms = context.invokeQuery(ast.selector, ast.originalSelector, ast.limit, ast.includeSelf, options.optional ? true : false, context.errors);\n context.currentQueryTotal = elms.length;\n let sameElementTimeline = null;\n elms.forEach((element, i) => {\n context.currentQueryIndex = i;\n const innerContext = context.createSubContext(ast.options, element);\n if (delay) {\n innerContext.delayNextStep(delay);\n }\n if (element === context.element) {\n sameElementTimeline = innerContext.currentTimeline;\n }\n visitDslNode(this, ast.animation, innerContext);\n // this is here just incase the inner steps only contain or end\n // with a style() call (which is here to signal that this is a preparatory\n // call to style an element before it is animated again)\n innerContext.currentTimeline.applyStylesToKeyframe();\n const endTime = innerContext.currentTimeline.currentTime;\n furthestTime = Math.max(furthestTime, endTime);\n });\n context.currentQueryIndex = 0;\n context.currentQueryTotal = 0;\n context.transformIntoNewTimeline(furthestTime);\n if (sameElementTimeline) {\n context.currentTimeline.mergeTimelineCollectedStyles(sameElementTimeline);\n context.currentTimeline.snapshotCurrentStyles();\n }\n context.previousNode = ast;\n }\n visitStagger(ast, context) {\n const parentContext = context.parentContext;\n const tl = context.currentTimeline;\n const timings = ast.timings;\n const duration = Math.abs(timings.duration);\n const maxTime = duration * (context.currentQueryTotal - 1);\n let delay = duration * context.currentQueryIndex;\n let staggerTransformer = timings.duration < 0 ? 'reverse' : timings.easing;\n switch (staggerTransformer) {\n case 'reverse':\n delay = maxTime - delay;\n break;\n case 'full':\n delay = parentContext.currentStaggerTime;\n break;\n }\n const timeline = context.currentTimeline;\n if (delay) {\n timeline.delayNextStep(delay);\n }\n const startingTime = timeline.currentTime;\n visitDslNode(this, ast.animation, context);\n context.previousNode = ast;\n // time = duration + delay\n // the reason why this computation is so complex is because\n // the inner timeline may either have a delay value or a stretched\n // keyframe depending on if a subtimeline is not used or is used.\n parentContext.currentStaggerTime =\n tl.currentTime - startingTime + (tl.startTime - parentContext.currentTimeline.startTime);\n }\n}\nconst DEFAULT_NOOP_PREVIOUS_NODE = {};\nclass AnimationTimelineContext {\n constructor(_driver, element, subInstructions, _enterClassName, _leaveClassName, errors, timelines, initialTimeline) {\n this._driver = _driver;\n this.element = element;\n this.subInstructions = subInstructions;\n this._enterClassName = _enterClassName;\n this._leaveClassName = _leaveClassName;\n this.errors = errors;\n this.timelines = timelines;\n this.parentContext = null;\n this.currentAnimateTimings = null;\n this.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n this.subContextCount = 0;\n this.options = {};\n this.currentQueryIndex = 0;\n this.currentQueryTotal = 0;\n this.currentStaggerTime = 0;\n this.currentTimeline = initialTimeline || new TimelineBuilder(this._driver, element, 0);\n timelines.push(this.currentTimeline);\n }\n get params() {\n return this.options.params;\n }\n updateOptions(options, skipIfExists) {\n if (!options)\n return;\n const newOptions = options;\n let optionsToUpdate = this.options;\n // NOTE: this will get patched up when other animation methods support duration overrides\n if (newOptions.duration != null) {\n optionsToUpdate.duration = resolveTimingValue(newOptions.duration);\n }\n if (newOptions.delay != null) {\n optionsToUpdate.delay = resolveTimingValue(newOptions.delay);\n }\n const newParams = newOptions.params;\n if (newParams) {\n let paramsToUpdate = optionsToUpdate.params;\n if (!paramsToUpdate) {\n paramsToUpdate = this.options.params = {};\n }\n Object.keys(newParams).forEach((name) => {\n if (!skipIfExists || !paramsToUpdate.hasOwnProperty(name)) {\n paramsToUpdate[name] = interpolateParams(newParams[name], paramsToUpdate, this.errors);\n }\n });\n }\n }\n _copyOptions() {\n const options = {};\n if (this.options) {\n const oldParams = this.options.params;\n if (oldParams) {\n const params = (options['params'] = {});\n Object.keys(oldParams).forEach((name) => {\n params[name] = oldParams[name];\n });\n }\n }\n return options;\n }\n createSubContext(options = null, element, newTime) {\n const target = element || this.element;\n const context = new AnimationTimelineContext(this._driver, target, this.subInstructions, this._enterClassName, this._leaveClassName, this.errors, this.timelines, this.currentTimeline.fork(target, newTime || 0));\n context.previousNode = this.previousNode;\n context.currentAnimateTimings = this.currentAnimateTimings;\n context.options = this._copyOptions();\n context.updateOptions(options);\n context.currentQueryIndex = this.currentQueryIndex;\n context.currentQueryTotal = this.currentQueryTotal;\n context.parentContext = this;\n this.subContextCount++;\n return context;\n }\n transformIntoNewTimeline(newTime) {\n this.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n this.currentTimeline = this.currentTimeline.fork(this.element, newTime);\n this.timelines.push(this.currentTimeline);\n return this.currentTimeline;\n }\n appendInstructionToTimeline(instruction, duration, delay) {\n const updatedTimings = {\n duration: duration != null ? duration : instruction.duration,\n delay: this.currentTimeline.currentTime + (delay != null ? delay : 0) + instruction.delay,\n easing: '',\n };\n const builder = new SubTimelineBuilder(this._driver, instruction.element, instruction.keyframes, instruction.preStyleProps, instruction.postStyleProps, updatedTimings, instruction.stretchStartingKeyframe);\n this.timelines.push(builder);\n return updatedTimings;\n }\n incrementTime(time) {\n this.currentTimeline.forwardTime(this.currentTimeline.duration + time);\n }\n delayNextStep(delay) {\n // negative delays are not yet supported\n if (delay > 0) {\n this.currentTimeline.delayNextStep(delay);\n }\n }\n invokeQuery(selector, originalSelector, limit, includeSelf, optional, errors) {\n let results = [];\n if (includeSelf) {\n results.push(this.element);\n }\n if (selector.length > 0) {\n // only if :self is used then the selector can be empty\n selector = selector.replace(ENTER_TOKEN_REGEX, '.' + this._enterClassName);\n selector = selector.replace(LEAVE_TOKEN_REGEX, '.' + this._leaveClassName);\n const multi = limit != 1;\n let elements = this._driver.query(this.element, selector, multi);\n if (limit !== 0) {\n elements =\n limit < 0\n ? elements.slice(elements.length + limit, elements.length)\n : elements.slice(0, limit);\n }\n results.push(...elements);\n }\n if (!optional && results.length == 0) {\n errors.push(invalidQuery(originalSelector));\n }\n return results;\n }\n}\nclass TimelineBuilder {\n constructor(_driver, element, startTime, _elementTimelineStylesLookup) {\n this._driver = _driver;\n this.element = element;\n this.startTime = startTime;\n this._elementTimelineStylesLookup = _elementTimelineStylesLookup;\n this.duration = 0;\n this.easing = null;\n this._previousKeyframe = new Map();\n this._currentKeyframe = new Map();\n this._keyframes = new Map();\n this._styleSummary = new Map();\n this._localTimelineStyles = new Map();\n this._pendingStyles = new Map();\n this._backFill = new Map();\n this._currentEmptyStepKeyframe = null;\n if (!this._elementTimelineStylesLookup) {\n this._elementTimelineStylesLookup = new Map();\n }\n this._globalTimelineStyles = this._elementTimelineStylesLookup.get(element);\n if (!this._globalTimelineStyles) {\n this._globalTimelineStyles = this._localTimelineStyles;\n this._elementTimelineStylesLookup.set(element, this._localTimelineStyles);\n }\n this._loadKeyframe();\n }\n containsAnimation() {\n switch (this._keyframes.size) {\n case 0:\n return false;\n case 1:\n return this.hasCurrentStyleProperties();\n default:\n return true;\n }\n }\n hasCurrentStyleProperties() {\n return this._currentKeyframe.size > 0;\n }\n get currentTime() {\n return this.startTime + this.duration;\n }\n delayNextStep(delay) {\n // in the event that a style() step is placed right before a stagger()\n // and that style() step is the very first style() value in the animation\n // then we need to make a copy of the keyframe [0, copy, 1] so that the delay\n // properly applies the style() values to work with the stagger...\n const hasPreStyleStep = this._keyframes.size === 1 && this._pendingStyles.size;\n if (this.duration || hasPreStyleStep) {\n this.forwardTime(this.currentTime + delay);\n if (hasPreStyleStep) {\n this.snapshotCurrentStyles();\n }\n }\n else {\n this.startTime += delay;\n }\n }\n fork(element, currentTime) {\n this.applyStylesToKeyframe();\n return new TimelineBuilder(this._driver, element, currentTime || this.currentTime, this._elementTimelineStylesLookup);\n }\n _loadKeyframe() {\n if (this._currentKeyframe) {\n this._previousKeyframe = this._currentKeyframe;\n }\n this._currentKeyframe = this._keyframes.get(this.duration);\n if (!this._currentKeyframe) {\n this._currentKeyframe = new Map();\n this._keyframes.set(this.duration, this._currentKeyframe);\n }\n }\n forwardFrame() {\n this.duration += ONE_FRAME_IN_MILLISECONDS;\n this._loadKeyframe();\n }\n forwardTime(time) {\n this.applyStylesToKeyframe();\n this.duration = time;\n this._loadKeyframe();\n }\n _updateStyle(prop, value) {\n this._localTimelineStyles.set(prop, value);\n this._globalTimelineStyles.set(prop, value);\n this._styleSummary.set(prop, { time: this.currentTime, value });\n }\n allowOnlyTimelineStyles() {\n return this._currentEmptyStepKeyframe !== this._currentKeyframe;\n }\n applyEmptyStep(easing) {\n if (easing) {\n this._previousKeyframe.set('easing', easing);\n }\n // special case for animate(duration):\n // all missing styles are filled with a `*` value then\n // if any destination styles are filled in later on the same\n // keyframe then they will override the overridden styles\n // We use `_globalTimelineStyles` here because there may be\n // styles in previous keyframes that are not present in this timeline\n for (let [prop, value] of this._globalTimelineStyles) {\n this._backFill.set(prop, value || AUTO_STYLE);\n this._currentKeyframe.set(prop, AUTO_STYLE);\n }\n this._currentEmptyStepKeyframe = this._currentKeyframe;\n }\n setStyles(input, easing, errors, options) {\n if (easing) {\n this._previousKeyframe.set('easing', easing);\n }\n const params = (options && options.params) || {};\n const styles = flattenStyles(input, this._globalTimelineStyles);\n for (let [prop, value] of styles) {\n const val = interpolateParams(value, params, errors);\n this._pendingStyles.set(prop, val);\n if (!this._localTimelineStyles.has(prop)) {\n this._backFill.set(prop, this._globalTimelineStyles.get(prop) ?? AUTO_STYLE);\n }\n this._updateStyle(prop, val);\n }\n }\n applyStylesToKeyframe() {\n if (this._pendingStyles.size == 0)\n return;\n this._pendingStyles.forEach((val, prop) => {\n this._currentKeyframe.set(prop, val);\n });\n this._pendingStyles.clear();\n this._localTimelineStyles.forEach((val, prop) => {\n if (!this._currentKeyframe.has(prop)) {\n this._currentKeyframe.set(prop, val);\n }\n });\n }\n snapshotCurrentStyles() {\n for (let [prop, val] of this._localTimelineStyles) {\n this._pendingStyles.set(prop, val);\n this._updateStyle(prop, val);\n }\n }\n getFinalKeyframe() {\n return this._keyframes.get(this.duration);\n }\n get properties() {\n const properties = [];\n for (let prop in this._currentKeyframe) {\n properties.push(prop);\n }\n return properties;\n }\n mergeTimelineCollectedStyles(timeline) {\n timeline._styleSummary.forEach((details1, prop) => {\n const details0 = this._styleSummary.get(prop);\n if (!details0 || details1.time > details0.time) {\n this._updateStyle(prop, details1.value);\n }\n });\n }\n buildKeyframes() {\n this.applyStylesToKeyframe();\n const preStyleProps = new Set();\n const postStyleProps = new Set();\n const isEmpty = this._keyframes.size === 1 && this.duration === 0;\n let finalKeyframes = [];\n this._keyframes.forEach((keyframe, time) => {\n const finalKeyframe = new Map([...this._backFill, ...keyframe]);\n finalKeyframe.forEach((value, prop) => {\n if (value === ɵPRE_STYLE) {\n preStyleProps.add(prop);\n }\n else if (value === AUTO_STYLE) {\n postStyleProps.add(prop);\n }\n });\n if (!isEmpty) {\n finalKeyframe.set('offset', time / this.duration);\n }\n finalKeyframes.push(finalKeyframe);\n });\n const preProps = [...preStyleProps.values()];\n const postProps = [...postStyleProps.values()];\n // special case for a 0-second animation (which is designed just to place styles onscreen)\n if (isEmpty) {\n const kf0 = finalKeyframes[0];\n const kf1 = new Map(kf0);\n kf0.set('offset', 0);\n kf1.set('offset', 1);\n finalKeyframes = [kf0, kf1];\n }\n return createTimelineInstruction(this.element, finalKeyframes, preProps, postProps, this.duration, this.startTime, this.easing, false);\n }\n}\nclass SubTimelineBuilder extends TimelineBuilder {\n constructor(driver, element, keyframes, preStyleProps, postStyleProps, timings, _stretchStartingKeyframe = false) {\n super(driver, element, timings.delay);\n this.keyframes = keyframes;\n this.preStyleProps = preStyleProps;\n this.postStyleProps = postStyleProps;\n this._stretchStartingKeyframe = _stretchStartingKeyframe;\n this.timings = { duration: timings.duration, delay: timings.delay, easing: timings.easing };\n }\n containsAnimation() {\n return this.keyframes.length > 1;\n }\n buildKeyframes() {\n let keyframes = this.keyframes;\n let { delay, duration, easing } = this.timings;\n if (this._stretchStartingKeyframe && delay) {\n const newKeyframes = [];\n const totalTime = duration + delay;\n const startingGap = delay / totalTime;\n // the original starting keyframe now starts once the delay is done\n const newFirstKeyframe = new Map(keyframes[0]);\n newFirstKeyframe.set('offset', 0);\n newKeyframes.push(newFirstKeyframe);\n const oldFirstKeyframe = new Map(keyframes[0]);\n oldFirstKeyframe.set('offset', roundOffset(startingGap));\n newKeyframes.push(oldFirstKeyframe);\n /*\n When the keyframe is stretched then it means that the delay before the animation\n starts is gone. Instead the first keyframe is placed at the start of the animation\n and it is then copied to where it starts when the original delay is over. This basically\n means nothing animates during that delay, but the styles are still rendered. For this\n to work the original offset values that exist in the original keyframes must be \"warped\"\n so that they can take the new keyframe + delay into account.\n \n delay=1000, duration=1000, keyframes = 0 .5 1\n \n turns into\n \n delay=0, duration=2000, keyframes = 0 .33 .66 1\n */\n // offsets between 1 ... n -1 are all warped by the keyframe stretch\n const limit = keyframes.length - 1;\n for (let i = 1; i <= limit; i++) {\n let kf = new Map(keyframes[i]);\n const oldOffset = kf.get('offset');\n const timeAtKeyframe = delay + oldOffset * duration;\n kf.set('offset', roundOffset(timeAtKeyframe / totalTime));\n newKeyframes.push(kf);\n }\n // the new starting keyframe should be added at the start\n duration = totalTime;\n delay = 0;\n easing = '';\n keyframes = newKeyframes;\n }\n return createTimelineInstruction(this.element, keyframes, this.preStyleProps, this.postStyleProps, duration, delay, easing, true);\n }\n}\nfunction roundOffset(offset, decimalPoints = 3) {\n const mult = Math.pow(10, decimalPoints - 1);\n return Math.round(offset * mult) / mult;\n}\nfunction flattenStyles(input, allStyles) {\n const styles = new Map();\n let allProperties;\n input.forEach((token) => {\n if (token === '*') {\n allProperties ??= allStyles.keys();\n for (let prop of allProperties) {\n styles.set(prop, AUTO_STYLE);\n }\n }\n else {\n for (let [prop, val] of token) {\n styles.set(prop, val);\n }\n }\n });\n return styles;\n}\n\nfunction createTransitionInstruction(element, triggerName, fromState, toState, isRemovalTransition, fromStyles, toStyles, timelines, queriedElements, preStyleProps, postStyleProps, totalTime, errors) {\n return {\n type: 0 /* AnimationTransitionInstructionType.TransitionAnimation */,\n element,\n triggerName,\n isRemovalTransition,\n fromState,\n fromStyles,\n toState,\n toStyles,\n timelines,\n queriedElements,\n preStyleProps,\n postStyleProps,\n totalTime,\n errors,\n };\n}\n\nconst EMPTY_OBJECT = {};\nclass AnimationTransitionFactory {\n constructor(_triggerName, ast, _stateStyles) {\n this._triggerName = _triggerName;\n this.ast = ast;\n this._stateStyles = _stateStyles;\n }\n match(currentState, nextState, element, params) {\n return oneOrMoreTransitionsMatch(this.ast.matchers, currentState, nextState, element, params);\n }\n buildStyles(stateName, params, errors) {\n let styler = this._stateStyles.get('*');\n if (stateName !== undefined) {\n styler = this._stateStyles.get(stateName?.toString()) || styler;\n }\n return styler ? styler.buildStyles(params, errors) : new Map();\n }\n build(driver, element, currentState, nextState, enterClassName, leaveClassName, currentOptions, nextOptions, subInstructions, skipAstBuild) {\n const errors = [];\n const transitionAnimationParams = (this.ast.options && this.ast.options.params) || EMPTY_OBJECT;\n const currentAnimationParams = (currentOptions && currentOptions.params) || EMPTY_OBJECT;\n const currentStateStyles = this.buildStyles(currentState, currentAnimationParams, errors);\n const nextAnimationParams = (nextOptions && nextOptions.params) || EMPTY_OBJECT;\n const nextStateStyles = this.buildStyles(nextState, nextAnimationParams, errors);\n const queriedElements = new Set();\n const preStyleMap = new Map();\n const postStyleMap = new Map();\n const isRemoval = nextState === 'void';\n const animationOptions = {\n params: applyParamDefaults(nextAnimationParams, transitionAnimationParams),\n delay: this.ast.options?.delay,\n };\n const timelines = skipAstBuild\n ? []\n : buildAnimationTimelines(driver, element, this.ast.animation, enterClassName, leaveClassName, currentStateStyles, nextStateStyles, animationOptions, subInstructions, errors);\n let totalTime = 0;\n timelines.forEach((tl) => {\n totalTime = Math.max(tl.duration + tl.delay, totalTime);\n });\n if (errors.length) {\n return createTransitionInstruction(element, this._triggerName, currentState, nextState, isRemoval, currentStateStyles, nextStateStyles, [], [], preStyleMap, postStyleMap, totalTime, errors);\n }\n timelines.forEach((tl) => {\n const elm = tl.element;\n const preProps = getOrSetDefaultValue(preStyleMap, elm, new Set());\n tl.preStyleProps.forEach((prop) => preProps.add(prop));\n const postProps = getOrSetDefaultValue(postStyleMap, elm, new Set());\n tl.postStyleProps.forEach((prop) => postProps.add(prop));\n if (elm !== element) {\n queriedElements.add(elm);\n }\n });\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n checkNonAnimatableInTimelines(timelines, this._triggerName, driver);\n }\n return createTransitionInstruction(element, this._triggerName, currentState, nextState, isRemoval, currentStateStyles, nextStateStyles, timelines, [...queriedElements.values()], preStyleMap, postStyleMap, totalTime);\n }\n}\n/**\n * Checks inside a set of timelines if they try to animate a css property which is not considered\n * animatable, in that case it prints a warning on the console.\n * Besides that the function doesn't have any other effect.\n *\n * Note: this check is done here after the timelines are built instead of doing on a lower level so\n * that we can make sure that the warning appears only once per instruction (we can aggregate here\n * all the issues instead of finding them separately).\n *\n * @param timelines The built timelines for the current instruction.\n * @param triggerName The name of the trigger for the current instruction.\n * @param driver Animation driver used to perform the check.\n *\n */\nfunction checkNonAnimatableInTimelines(timelines, triggerName, driver) {\n if (!driver.validateAnimatableStyleProperty) {\n return;\n }\n const allowedNonAnimatableProps = new Set([\n // 'easing' is a utility/synthetic prop we use to represent\n // easing functions, it represents a property of the animation\n // which is not animatable but different values can be used\n // in different steps\n 'easing',\n ]);\n const invalidNonAnimatableProps = new Set();\n timelines.forEach(({ keyframes }) => {\n const nonAnimatablePropsInitialValues = new Map();\n keyframes.forEach((keyframe) => {\n const entriesToCheck = Array.from(keyframe.entries()).filter(([prop]) => !allowedNonAnimatableProps.has(prop));\n for (const [prop, value] of entriesToCheck) {\n if (!driver.validateAnimatableStyleProperty(prop)) {\n if (nonAnimatablePropsInitialValues.has(prop) && !invalidNonAnimatableProps.has(prop)) {\n const propInitialValue = nonAnimatablePropsInitialValues.get(prop);\n if (propInitialValue !== value) {\n invalidNonAnimatableProps.add(prop);\n }\n }\n else {\n nonAnimatablePropsInitialValues.set(prop, value);\n }\n }\n }\n });\n });\n if (invalidNonAnimatableProps.size > 0) {\n console.warn(`Warning: The animation trigger \"${triggerName}\" is attempting to animate the following` +\n ' not animatable properties: ' +\n Array.from(invalidNonAnimatableProps).join(', ') +\n '\\n' +\n '(to check the list of all animatable properties visit https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties)');\n }\n}\nfunction oneOrMoreTransitionsMatch(matchFns, currentState, nextState, element, params) {\n return matchFns.some((fn) => fn(currentState, nextState, element, params));\n}\nfunction applyParamDefaults(userParams, defaults) {\n const result = { ...defaults };\n Object.entries(userParams).forEach(([key, value]) => {\n if (value != null) {\n result[key] = value;\n }\n });\n return result;\n}\nclass AnimationStateStyles {\n constructor(styles, defaultParams, normalizer) {\n this.styles = styles;\n this.defaultParams = defaultParams;\n this.normalizer = normalizer;\n }\n buildStyles(params, errors) {\n const finalStyles = new Map();\n const combinedParams = applyParamDefaults(params, this.defaultParams);\n this.styles.styles.forEach((value) => {\n if (typeof value !== 'string') {\n value.forEach((val, prop) => {\n if (val) {\n val = interpolateParams(val, combinedParams, errors);\n }\n const normalizedProp = this.normalizer.normalizePropertyName(prop, errors);\n val = this.normalizer.normalizeStyleValue(prop, normalizedProp, val, errors);\n finalStyles.set(prop, val);\n });\n }\n });\n return finalStyles;\n }\n}\n\nfunction buildTrigger(name, ast, normalizer) {\n return new AnimationTrigger(name, ast, normalizer);\n}\nclass AnimationTrigger {\n constructor(name, ast, _normalizer) {\n this.name = name;\n this.ast = ast;\n this._normalizer = _normalizer;\n this.transitionFactories = [];\n this.states = new Map();\n ast.states.forEach((ast) => {\n const defaultParams = (ast.options && ast.options.params) || {};\n this.states.set(ast.name, new AnimationStateStyles(ast.style, defaultParams, _normalizer));\n });\n balanceProperties(this.states, 'true', '1');\n balanceProperties(this.states, 'false', '0');\n ast.transitions.forEach((ast) => {\n this.transitionFactories.push(new AnimationTransitionFactory(name, ast, this.states));\n });\n this.fallbackTransition = createFallbackTransition(name, this.states, this._normalizer);\n }\n get containsQueries() {\n return this.ast.queryCount > 0;\n }\n matchTransition(currentState, nextState, element, params) {\n const entry = this.transitionFactories.find((f) => f.match(currentState, nextState, element, params));\n return entry || null;\n }\n matchStyles(currentState, params, errors) {\n return this.fallbackTransition.buildStyles(currentState, params, errors);\n }\n}\nfunction createFallbackTransition(triggerName, states, normalizer) {\n const matchers = [(fromState, toState) => true];\n const animation = { type: AnimationMetadataType.Sequence, steps: [], options: null };\n const transition = {\n type: AnimationMetadataType.Transition,\n animation,\n matchers,\n options: null,\n queryCount: 0,\n depCount: 0,\n };\n return new AnimationTransitionFactory(triggerName, transition, states);\n}\nfunction balanceProperties(stateMap, key1, key2) {\n if (stateMap.has(key1)) {\n if (!stateMap.has(key2)) {\n stateMap.set(key2, stateMap.get(key1));\n }\n }\n else if (stateMap.has(key2)) {\n stateMap.set(key1, stateMap.get(key2));\n }\n}\n\nconst EMPTY_INSTRUCTION_MAP = new ElementInstructionMap();\nclass TimelineAnimationEngine {\n constructor(bodyNode, _driver, _normalizer) {\n this.bodyNode = bodyNode;\n this._driver = _driver;\n this._normalizer = _normalizer;\n this._animations = new Map();\n this._playersById = new Map();\n this.players = [];\n }\n register(id, metadata) {\n const errors = [];\n const warnings = [];\n const ast = buildAnimationAst(this._driver, metadata, errors, warnings);\n if (errors.length) {\n throw registerFailed(errors);\n }\n else {\n if (warnings.length) {\n warnRegister(warnings);\n }\n this._animations.set(id, ast);\n }\n }\n _buildPlayer(i, preStyles, postStyles) {\n const element = i.element;\n const keyframes = normalizeKeyframes$1(this._normalizer, i.keyframes, preStyles, postStyles);\n return this._driver.animate(element, keyframes, i.duration, i.delay, i.easing, [], true);\n }\n create(id, element, options = {}) {\n const errors = [];\n const ast = this._animations.get(id);\n let instructions;\n const autoStylesMap = new Map();\n if (ast) {\n instructions = buildAnimationTimelines(this._driver, element, ast, ENTER_CLASSNAME, LEAVE_CLASSNAME, new Map(), new Map(), options, EMPTY_INSTRUCTION_MAP, errors);\n instructions.forEach((inst) => {\n const styles = getOrSetDefaultValue(autoStylesMap, inst.element, new Map());\n inst.postStyleProps.forEach((prop) => styles.set(prop, null));\n });\n }\n else {\n errors.push(missingOrDestroyedAnimation());\n instructions = [];\n }\n if (errors.length) {\n throw createAnimationFailed(errors);\n }\n autoStylesMap.forEach((styles, element) => {\n styles.forEach((_, prop) => {\n styles.set(prop, this._driver.computeStyle(element, prop, AUTO_STYLE));\n });\n });\n const players = instructions.map((i) => {\n const styles = autoStylesMap.get(i.element);\n return this._buildPlayer(i, new Map(), styles);\n });\n const player = optimizeGroupPlayer(players);\n this._playersById.set(id, player);\n player.onDestroy(() => this.destroy(id));\n this.players.push(player);\n return player;\n }\n destroy(id) {\n const player = this._getPlayer(id);\n player.destroy();\n this._playersById.delete(id);\n const index = this.players.indexOf(player);\n if (index >= 0) {\n this.players.splice(index, 1);\n }\n }\n _getPlayer(id) {\n const player = this._playersById.get(id);\n if (!player) {\n throw missingPlayer(id);\n }\n return player;\n }\n listen(id, element, eventName, callback) {\n // triggerName, fromState, toState are all ignored for timeline animations\n const baseEvent = makeAnimationEvent(element, '', '', '');\n listenOnPlayer(this._getPlayer(id), eventName, baseEvent, callback);\n return () => { };\n }\n command(id, element, command, args) {\n if (command == 'register') {\n this.register(id, args[0]);\n return;\n }\n if (command == 'create') {\n const options = (args[0] || {});\n this.create(id, element, options);\n return;\n }\n const player = this._getPlayer(id);\n switch (command) {\n case 'play':\n player.play();\n break;\n case 'pause':\n player.pause();\n break;\n case 'reset':\n player.reset();\n break;\n case 'restart':\n player.restart();\n break;\n case 'finish':\n player.finish();\n break;\n case 'init':\n player.init();\n break;\n case 'setPosition':\n player.setPosition(parseFloat(args[0]));\n break;\n case 'destroy':\n this.destroy(id);\n break;\n }\n }\n}\n\nconst QUEUED_CLASSNAME = 'ng-animate-queued';\nconst QUEUED_SELECTOR = '.ng-animate-queued';\nconst DISABLED_CLASSNAME = 'ng-animate-disabled';\nconst DISABLED_SELECTOR = '.ng-animate-disabled';\nconst STAR_CLASSNAME = 'ng-star-inserted';\nconst STAR_SELECTOR = '.ng-star-inserted';\nconst EMPTY_PLAYER_ARRAY = [];\nconst NULL_REMOVAL_STATE = {\n namespaceId: '',\n setForRemoval: false,\n setForMove: false,\n hasAnimation: false,\n removedBeforeQueried: false,\n};\nconst NULL_REMOVED_QUERIED_STATE = {\n namespaceId: '',\n setForMove: false,\n setForRemoval: false,\n hasAnimation: false,\n removedBeforeQueried: true,\n};\nconst REMOVAL_FLAG = '__ng_removed';\nclass StateValue {\n get params() {\n return this.options.params;\n }\n constructor(input, namespaceId = '') {\n this.namespaceId = namespaceId;\n const isObj = input && input.hasOwnProperty('value');\n const value = isObj ? input['value'] : input;\n this.value = normalizeTriggerValue(value);\n if (isObj) {\n // we drop the value property from options.\n const { value, ...options } = input;\n this.options = options;\n }\n else {\n this.options = {};\n }\n if (!this.options.params) {\n this.options.params = {};\n }\n }\n absorbOptions(options) {\n const newParams = options.params;\n if (newParams) {\n const oldParams = this.options.params;\n Object.keys(newParams).forEach((prop) => {\n if (oldParams[prop] == null) {\n oldParams[prop] = newParams[prop];\n }\n });\n }\n }\n}\nconst VOID_VALUE = 'void';\nconst DEFAULT_STATE_VALUE = new StateValue(VOID_VALUE);\nclass AnimationTransitionNamespace {\n constructor(id, hostElement, _engine) {\n this.id = id;\n this.hostElement = hostElement;\n this._engine = _engine;\n this.players = [];\n this._triggers = new Map();\n this._queue = [];\n this._elementListeners = new Map();\n this._hostClassName = 'ng-tns-' + id;\n addClass(hostElement, this._hostClassName);\n }\n listen(element, name, phase, callback) {\n if (!this._triggers.has(name)) {\n throw missingTrigger(phase, name);\n }\n if (phase == null || phase.length == 0) {\n throw missingEvent(name);\n }\n if (!isTriggerEventValid(phase)) {\n throw unsupportedTriggerEvent(phase, name);\n }\n const listeners = getOrSetDefaultValue(this._elementListeners, element, []);\n const data = { name, phase, callback };\n listeners.push(data);\n const triggersWithStates = getOrSetDefaultValue(this._engine.statesByElement, element, new Map());\n if (!triggersWithStates.has(name)) {\n addClass(element, NG_TRIGGER_CLASSNAME);\n addClass(element, NG_TRIGGER_CLASSNAME + '-' + name);\n triggersWithStates.set(name, DEFAULT_STATE_VALUE);\n }\n return () => {\n // the event listener is removed AFTER the flush has occurred such\n // that leave animations callbacks can fire (otherwise if the node\n // is removed in between then the listeners would be deregistered)\n this._engine.afterFlush(() => {\n const index = listeners.indexOf(data);\n if (index >= 0) {\n listeners.splice(index, 1);\n }\n if (!this._triggers.has(name)) {\n triggersWithStates.delete(name);\n }\n });\n };\n }\n register(name, ast) {\n if (this._triggers.has(name)) {\n // throw\n return false;\n }\n else {\n this._triggers.set(name, ast);\n return true;\n }\n }\n _getTrigger(name) {\n const trigger = this._triggers.get(name);\n if (!trigger) {\n throw unregisteredTrigger(name);\n }\n return trigger;\n }\n trigger(element, triggerName, value, defaultToFallback = true) {\n const trigger = this._getTrigger(triggerName);\n const player = new TransitionAnimationPlayer(this.id, triggerName, element);\n let triggersWithStates = this._engine.statesByElement.get(element);\n if (!triggersWithStates) {\n addClass(element, NG_TRIGGER_CLASSNAME);\n addClass(element, NG_TRIGGER_CLASSNAME + '-' + triggerName);\n this._engine.statesByElement.set(element, (triggersWithStates = new Map()));\n }\n let fromState = triggersWithStates.get(triggerName);\n const toState = new StateValue(value, this.id);\n const isObj = value && value.hasOwnProperty('value');\n if (!isObj && fromState) {\n toState.absorbOptions(fromState.options);\n }\n triggersWithStates.set(triggerName, toState);\n if (!fromState) {\n fromState = DEFAULT_STATE_VALUE;\n }\n const isRemoval = toState.value === VOID_VALUE;\n // normally this isn't reached by here, however, if an object expression\n // is passed in then it may be a new object each time. Comparing the value\n // is important since that will stay the same despite there being a new object.\n // The removal arc here is special cased because the same element is triggered\n // twice in the event that it contains animations on the outer/inner portions\n // of the host container\n if (!isRemoval && fromState.value === toState.value) {\n // this means that despite the value not changing, some inner params\n // have changed which means that the animation final styles need to be applied\n if (!objEquals(fromState.params, toState.params)) {\n const errors = [];\n const fromStyles = trigger.matchStyles(fromState.value, fromState.params, errors);\n const toStyles = trigger.matchStyles(toState.value, toState.params, errors);\n if (errors.length) {\n this._engine.reportError(errors);\n }\n else {\n this._engine.afterFlush(() => {\n eraseStyles(element, fromStyles);\n setStyles(element, toStyles);\n });\n }\n }\n return;\n }\n const playersOnElement = getOrSetDefaultValue(this._engine.playersByElement, element, []);\n playersOnElement.forEach((player) => {\n // only remove the player if it is queued on the EXACT same trigger/namespace\n // we only also deal with queued players here because if the animation has\n // started then we want to keep the player alive until the flush happens\n // (which is where the previousPlayers are passed into the new player)\n if (player.namespaceId == this.id && player.triggerName == triggerName && player.queued) {\n player.destroy();\n }\n });\n let transition = trigger.matchTransition(fromState.value, toState.value, element, toState.params);\n let isFallbackTransition = false;\n if (!transition) {\n if (!defaultToFallback)\n return;\n transition = trigger.fallbackTransition;\n isFallbackTransition = true;\n }\n this._engine.totalQueuedPlayers++;\n this._queue.push({\n element,\n triggerName,\n transition,\n fromState,\n toState,\n player,\n isFallbackTransition,\n });\n if (!isFallbackTransition) {\n addClass(element, QUEUED_CLASSNAME);\n player.onStart(() => {\n removeClass(element, QUEUED_CLASSNAME);\n });\n }\n player.onDone(() => {\n let index = this.players.indexOf(player);\n if (index >= 0) {\n this.players.splice(index, 1);\n }\n const players = this._engine.playersByElement.get(element);\n if (players) {\n let index = players.indexOf(player);\n if (index >= 0) {\n players.splice(index, 1);\n }\n }\n });\n this.players.push(player);\n playersOnElement.push(player);\n return player;\n }\n deregister(name) {\n this._triggers.delete(name);\n this._engine.statesByElement.forEach((stateMap) => stateMap.delete(name));\n this._elementListeners.forEach((listeners, element) => {\n this._elementListeners.set(element, listeners.filter((entry) => {\n return entry.name != name;\n }));\n });\n }\n clearElementCache(element) {\n this._engine.statesByElement.delete(element);\n this._elementListeners.delete(element);\n const elementPlayers = this._engine.playersByElement.get(element);\n if (elementPlayers) {\n elementPlayers.forEach((player) => player.destroy());\n this._engine.playersByElement.delete(element);\n }\n }\n _signalRemovalForInnerTriggers(rootElement, context) {\n const elements = this._engine.driver.query(rootElement, NG_TRIGGER_SELECTOR, true);\n // emulate a leave animation for all inner nodes within this node.\n // If there are no animations found for any of the nodes then clear the cache\n // for the element.\n elements.forEach((elm) => {\n // this means that an inner remove() operation has already kicked off\n // the animation on this element...\n if (elm[REMOVAL_FLAG])\n return;\n const namespaces = this._engine.fetchNamespacesByElement(elm);\n if (namespaces.size) {\n namespaces.forEach((ns) => ns.triggerLeaveAnimation(elm, context, false, true));\n }\n else {\n this.clearElementCache(elm);\n }\n });\n // If the child elements were removed along with the parent, their animations might not\n // have completed. Clear all the elements from the cache so we don't end up with a memory leak.\n this._engine.afterFlushAnimationsDone(() => elements.forEach((elm) => this.clearElementCache(elm)));\n }\n triggerLeaveAnimation(element, context, destroyAfterComplete, defaultToFallback) {\n const triggerStates = this._engine.statesByElement.get(element);\n const previousTriggersValues = new Map();\n if (triggerStates) {\n const players = [];\n triggerStates.forEach((state, triggerName) => {\n previousTriggersValues.set(triggerName, state.value);\n // this check is here in the event that an element is removed\n // twice (both on the host level and the component level)\n if (this._triggers.has(triggerName)) {\n const player = this.trigger(element, triggerName, VOID_VALUE, defaultToFallback);\n if (player) {\n players.push(player);\n }\n }\n });\n if (players.length) {\n this._engine.markElementAsRemoved(this.id, element, true, context, previousTriggersValues);\n if (destroyAfterComplete) {\n optimizeGroupPlayer(players).onDone(() => this._engine.processLeaveNode(element));\n }\n return true;\n }\n }\n return false;\n }\n prepareLeaveAnimationListeners(element) {\n const listeners = this._elementListeners.get(element);\n const elementStates = this._engine.statesByElement.get(element);\n // if this statement fails then it means that the element was picked up\n // by an earlier flush (or there are no listeners at all to track the leave).\n if (listeners && elementStates) {\n const visitedTriggers = new Set();\n listeners.forEach((listener) => {\n const triggerName = listener.name;\n if (visitedTriggers.has(triggerName))\n return;\n visitedTriggers.add(triggerName);\n const trigger = this._triggers.get(triggerName);\n const transition = trigger.fallbackTransition;\n const fromState = elementStates.get(triggerName) || DEFAULT_STATE_VALUE;\n const toState = new StateValue(VOID_VALUE);\n const player = new TransitionAnimationPlayer(this.id, triggerName, element);\n this._engine.totalQueuedPlayers++;\n this._queue.push({\n element,\n triggerName,\n transition,\n fromState,\n toState,\n player,\n isFallbackTransition: true,\n });\n });\n }\n }\n removeNode(element, context) {\n const engine = this._engine;\n if (element.childElementCount) {\n this._signalRemovalForInnerTriggers(element, context);\n }\n // this means that a * => VOID animation was detected and kicked off\n if (this.triggerLeaveAnimation(element, context, true))\n return;\n // find the player that is animating and make sure that the\n // removal is delayed until that player has completed\n let containsPotentialParentTransition = false;\n if (engine.totalAnimations) {\n const currentPlayers = engine.players.length\n ? engine.playersByQueriedElement.get(element)\n : [];\n // when this `if statement` does not continue forward it means that\n // a previous animation query has selected the current element and\n // is animating it. In this situation want to continue forwards and\n // allow the element to be queued up for animation later.\n if (currentPlayers && currentPlayers.length) {\n containsPotentialParentTransition = true;\n }\n else {\n let parent = element;\n while ((parent = parent.parentNode)) {\n const triggers = engine.statesByElement.get(parent);\n if (triggers) {\n containsPotentialParentTransition = true;\n break;\n }\n }\n }\n }\n // at this stage we know that the element will either get removed\n // during flush or will be picked up by a parent query. Either way\n // we need to fire the listeners for this element when it DOES get\n // removed (once the query parent animation is done or after flush)\n this.prepareLeaveAnimationListeners(element);\n // whether or not a parent has an animation we need to delay the deferral of the leave\n // operation until we have more information (which we do after flush() has been called)\n if (containsPotentialParentTransition) {\n engine.markElementAsRemoved(this.id, element, false, context);\n }\n else {\n const removalFlag = element[REMOVAL_FLAG];\n if (!removalFlag || removalFlag === NULL_REMOVAL_STATE) {\n // we do this after the flush has occurred such\n // that the callbacks can be fired\n engine.afterFlush(() => this.clearElementCache(element));\n engine.destroyInnerAnimations(element);\n engine._onRemovalComplete(element, context);\n }\n }\n }\n insertNode(element, parent) {\n addClass(element, this._hostClassName);\n }\n drainQueuedTransitions(microtaskId) {\n const instructions = [];\n this._queue.forEach((entry) => {\n const player = entry.player;\n if (player.destroyed)\n return;\n const element = entry.element;\n const listeners = this._elementListeners.get(element);\n if (listeners) {\n listeners.forEach((listener) => {\n if (listener.name == entry.triggerName) {\n const baseEvent = makeAnimationEvent(element, entry.triggerName, entry.fromState.value, entry.toState.value);\n baseEvent['_data'] = microtaskId;\n listenOnPlayer(entry.player, listener.phase, baseEvent, listener.callback);\n }\n });\n }\n if (player.markedForDestroy) {\n this._engine.afterFlush(() => {\n // now we can destroy the element properly since the event listeners have\n // been bound to the player\n player.destroy();\n });\n }\n else {\n instructions.push(entry);\n }\n });\n this._queue = [];\n return instructions.sort((a, b) => {\n // if depCount == 0 them move to front\n // otherwise if a contains b then move back\n const d0 = a.transition.ast.depCount;\n const d1 = b.transition.ast.depCount;\n if (d0 == 0 || d1 == 0) {\n return d0 - d1;\n }\n return this._engine.driver.containsElement(a.element, b.element) ? 1 : -1;\n });\n }\n destroy(context) {\n this.players.forEach((p) => p.destroy());\n this._signalRemovalForInnerTriggers(this.hostElement, context);\n }\n}\nclass TransitionAnimationEngine {\n /** @internal */\n _onRemovalComplete(element, context) {\n this.onRemovalComplete(element, context);\n }\n constructor(bodyNode, driver, _normalizer, scheduler) {\n this.bodyNode = bodyNode;\n this.driver = driver;\n this._normalizer = _normalizer;\n this.scheduler = scheduler;\n this.players = [];\n this.newHostElements = new Map();\n this.playersByElement = new Map();\n this.playersByQueriedElement = new Map();\n this.statesByElement = new Map();\n this.disabledNodes = new Set();\n this.totalAnimations = 0;\n this.totalQueuedPlayers = 0;\n this._namespaceLookup = {};\n this._namespaceList = [];\n this._flushFns = [];\n this._whenQuietFns = [];\n this.namespacesByHostElement = new Map();\n this.collectedEnterElements = [];\n this.collectedLeaveElements = [];\n // this method is designed to be overridden by the code that uses this engine\n this.onRemovalComplete = (element, context) => { };\n }\n get queuedPlayers() {\n const players = [];\n this._namespaceList.forEach((ns) => {\n ns.players.forEach((player) => {\n if (player.queued) {\n players.push(player);\n }\n });\n });\n return players;\n }\n createNamespace(namespaceId, hostElement) {\n const ns = new AnimationTransitionNamespace(namespaceId, hostElement, this);\n if (this.bodyNode && this.driver.containsElement(this.bodyNode, hostElement)) {\n this._balanceNamespaceList(ns, hostElement);\n }\n else {\n // defer this later until flush during when the host element has\n // been inserted so that we know exactly where to place it in\n // the namespace list\n this.newHostElements.set(hostElement, ns);\n // given that this host element is a part of the animation code, it\n // may or may not be inserted by a parent node that is of an\n // animation renderer type. If this happens then we can still have\n // access to this item when we query for :enter nodes. If the parent\n // is a renderer then the set data-structure will normalize the entry\n this.collectEnterElement(hostElement);\n }\n return (this._namespaceLookup[namespaceId] = ns);\n }\n _balanceNamespaceList(ns, hostElement) {\n const namespaceList = this._namespaceList;\n const namespacesByHostElement = this.namespacesByHostElement;\n const limit = namespaceList.length - 1;\n if (limit >= 0) {\n let found = false;\n // Find the closest ancestor with an existing namespace so we can then insert `ns` after it,\n // establishing a top-down ordering of namespaces in `this._namespaceList`.\n let ancestor = this.driver.getParentElement(hostElement);\n while (ancestor) {\n const ancestorNs = namespacesByHostElement.get(ancestor);\n if (ancestorNs) {\n // An animation namespace has been registered for this ancestor, so we insert `ns`\n // right after it to establish top-down ordering of animation namespaces.\n const index = namespaceList.indexOf(ancestorNs);\n namespaceList.splice(index + 1, 0, ns);\n found = true;\n break;\n }\n ancestor = this.driver.getParentElement(ancestor);\n }\n if (!found) {\n // No namespace exists that is an ancestor of `ns`, so `ns` is inserted at the front to\n // ensure that any existing descendants are ordered after `ns`, retaining the desired\n // top-down ordering.\n namespaceList.unshift(ns);\n }\n }\n else {\n namespaceList.push(ns);\n }\n namespacesByHostElement.set(hostElement, ns);\n return ns;\n }\n register(namespaceId, hostElement) {\n let ns = this._namespaceLookup[namespaceId];\n if (!ns) {\n ns = this.createNamespace(namespaceId, hostElement);\n }\n return ns;\n }\n registerTrigger(namespaceId, name, trigger) {\n let ns = this._namespaceLookup[namespaceId];\n if (ns && ns.register(name, trigger)) {\n this.totalAnimations++;\n }\n }\n destroy(namespaceId, context) {\n if (!namespaceId)\n return;\n this.afterFlush(() => { });\n this.afterFlushAnimationsDone(() => {\n const ns = this._fetchNamespace(namespaceId);\n this.namespacesByHostElement.delete(ns.hostElement);\n const index = this._namespaceList.indexOf(ns);\n if (index >= 0) {\n this._namespaceList.splice(index, 1);\n }\n ns.destroy(context);\n delete this._namespaceLookup[namespaceId];\n });\n }\n _fetchNamespace(id) {\n return this._namespaceLookup[id];\n }\n fetchNamespacesByElement(element) {\n // normally there should only be one namespace per element, however\n // if @triggers are placed on both the component element and then\n // its host element (within the component code) then there will be\n // two namespaces returned. We use a set here to simply deduplicate\n // the namespaces in case (for the reason described above) there are multiple triggers\n const namespaces = new Set();\n const elementStates = this.statesByElement.get(element);\n if (elementStates) {\n for (let stateValue of elementStates.values()) {\n if (stateValue.namespaceId) {\n const ns = this._fetchNamespace(stateValue.namespaceId);\n if (ns) {\n namespaces.add(ns);\n }\n }\n }\n }\n return namespaces;\n }\n trigger(namespaceId, element, name, value) {\n if (isElementNode(element)) {\n const ns = this._fetchNamespace(namespaceId);\n if (ns) {\n ns.trigger(element, name, value);\n return true;\n }\n }\n return false;\n }\n insertNode(namespaceId, element, parent, insertBefore) {\n if (!isElementNode(element))\n return;\n // special case for when an element is removed and reinserted (move operation)\n // when this occurs we do not want to use the element for deletion later\n const details = element[REMOVAL_FLAG];\n if (details && details.setForRemoval) {\n details.setForRemoval = false;\n details.setForMove = true;\n const index = this.collectedLeaveElements.indexOf(element);\n if (index >= 0) {\n this.collectedLeaveElements.splice(index, 1);\n }\n }\n // in the event that the namespaceId is blank then the caller\n // code does not contain any animation code in it, but it is\n // just being called so that the node is marked as being inserted\n if (namespaceId) {\n const ns = this._fetchNamespace(namespaceId);\n // This if-statement is a workaround for router issue #21947.\n // The router sometimes hits a race condition where while a route\n // is being instantiated a new navigation arrives, triggering leave\n // animation of DOM that has not been fully initialized, until this\n // is resolved, we need to handle the scenario when DOM is not in a\n // consistent state during the animation.\n if (ns) {\n ns.insertNode(element, parent);\n }\n }\n // only *directives and host elements are inserted before\n if (insertBefore) {\n this.collectEnterElement(element);\n }\n }\n collectEnterElement(element) {\n this.collectedEnterElements.push(element);\n }\n markElementAsDisabled(element, value) {\n if (value) {\n if (!this.disabledNodes.has(element)) {\n this.disabledNodes.add(element);\n addClass(element, DISABLED_CLASSNAME);\n }\n }\n else if (this.disabledNodes.has(element)) {\n this.disabledNodes.delete(element);\n removeClass(element, DISABLED_CLASSNAME);\n }\n }\n removeNode(namespaceId, element, context) {\n if (isElementNode(element)) {\n this.scheduler?.notify();\n const ns = namespaceId ? this._fetchNamespace(namespaceId) : null;\n if (ns) {\n ns.removeNode(element, context);\n }\n else {\n this.markElementAsRemoved(namespaceId, element, false, context);\n }\n const hostNS = this.namespacesByHostElement.get(element);\n if (hostNS && hostNS.id !== namespaceId) {\n hostNS.removeNode(element, context);\n }\n }\n else {\n this._onRemovalComplete(element, context);\n }\n }\n markElementAsRemoved(namespaceId, element, hasAnimation, context, previousTriggersValues) {\n this.collectedLeaveElements.push(element);\n element[REMOVAL_FLAG] = {\n namespaceId,\n setForRemoval: context,\n hasAnimation,\n removedBeforeQueried: false,\n previousTriggersValues,\n };\n }\n listen(namespaceId, element, name, phase, callback) {\n if (isElementNode(element)) {\n return this._fetchNamespace(namespaceId).listen(element, name, phase, callback);\n }\n return () => { };\n }\n _buildInstruction(entry, subTimelines, enterClassName, leaveClassName, skipBuildAst) {\n return entry.transition.build(this.driver, entry.element, entry.fromState.value, entry.toState.value, enterClassName, leaveClassName, entry.fromState.options, entry.toState.options, subTimelines, skipBuildAst);\n }\n destroyInnerAnimations(containerElement) {\n let elements = this.driver.query(containerElement, NG_TRIGGER_SELECTOR, true);\n elements.forEach((element) => this.destroyActiveAnimationsForElement(element));\n if (this.playersByQueriedElement.size == 0)\n return;\n elements = this.driver.query(containerElement, NG_ANIMATING_SELECTOR, true);\n elements.forEach((element) => this.finishActiveQueriedAnimationOnElement(element));\n }\n destroyActiveAnimationsForElement(element) {\n const players = this.playersByElement.get(element);\n if (players) {\n players.forEach((player) => {\n // special case for when an element is set for destruction, but hasn't started.\n // in this situation we want to delay the destruction until the flush occurs\n // so that any event listeners attached to the player are triggered.\n if (player.queued) {\n player.markedForDestroy = true;\n }\n else {\n player.destroy();\n }\n });\n }\n }\n finishActiveQueriedAnimationOnElement(element) {\n const players = this.playersByQueriedElement.get(element);\n if (players) {\n players.forEach((player) => player.finish());\n }\n }\n whenRenderingDone() {\n return new Promise((resolve) => {\n if (this.players.length) {\n return optimizeGroupPlayer(this.players).onDone(() => resolve());\n }\n else {\n resolve();\n }\n });\n }\n processLeaveNode(element) {\n const details = element[REMOVAL_FLAG];\n if (details && details.setForRemoval) {\n // this will prevent it from removing it twice\n element[REMOVAL_FLAG] = NULL_REMOVAL_STATE;\n if (details.namespaceId) {\n this.destroyInnerAnimations(element);\n const ns = this._fetchNamespace(details.namespaceId);\n if (ns) {\n ns.clearElementCache(element);\n }\n }\n this._onRemovalComplete(element, details.setForRemoval);\n }\n if (element.classList?.contains(DISABLED_CLASSNAME)) {\n this.markElementAsDisabled(element, false);\n }\n this.driver.query(element, DISABLED_SELECTOR, true).forEach((node) => {\n this.markElementAsDisabled(node, false);\n });\n }\n flush(microtaskId = -1) {\n let players = [];\n if (this.newHostElements.size) {\n this.newHostElements.forEach((ns, element) => this._balanceNamespaceList(ns, element));\n this.newHostElements.clear();\n }\n if (this.totalAnimations && this.collectedEnterElements.length) {\n for (let i = 0; i < this.collectedEnterElements.length; i++) {\n const elm = this.collectedEnterElements[i];\n addClass(elm, STAR_CLASSNAME);\n }\n }\n if (this._namespaceList.length &&\n (this.totalQueuedPlayers || this.collectedLeaveElements.length)) {\n const cleanupFns = [];\n try {\n players = this._flushAnimations(cleanupFns, microtaskId);\n }\n finally {\n for (let i = 0; i < cleanupFns.length; i++) {\n cleanupFns[i]();\n }\n }\n }\n else {\n for (let i = 0; i < this.collectedLeaveElements.length; i++) {\n const element = this.collectedLeaveElements[i];\n this.processLeaveNode(element);\n }\n }\n this.totalQueuedPlayers = 0;\n this.collectedEnterElements.length = 0;\n this.collectedLeaveElements.length = 0;\n this._flushFns.forEach((fn) => fn());\n this._flushFns = [];\n if (this._whenQuietFns.length) {\n // we move these over to a variable so that\n // if any new callbacks are registered in another\n // flush they do not populate the existing set\n const quietFns = this._whenQuietFns;\n this._whenQuietFns = [];\n if (players.length) {\n optimizeGroupPlayer(players).onDone(() => {\n quietFns.forEach((fn) => fn());\n });\n }\n else {\n quietFns.forEach((fn) => fn());\n }\n }\n }\n reportError(errors) {\n throw triggerTransitionsFailed(errors);\n }\n _flushAnimations(cleanupFns, microtaskId) {\n const subTimelines = new ElementInstructionMap();\n const skippedPlayers = [];\n const skippedPlayersMap = new Map();\n const queuedInstructions = [];\n const queriedElements = new Map();\n const allPreStyleElements = new Map();\n const allPostStyleElements = new Map();\n const disabledElementsSet = new Set();\n this.disabledNodes.forEach((node) => {\n disabledElementsSet.add(node);\n const nodesThatAreDisabled = this.driver.query(node, QUEUED_SELECTOR, true);\n for (let i = 0; i < nodesThatAreDisabled.length; i++) {\n disabledElementsSet.add(nodesThatAreDisabled[i]);\n }\n });\n const bodyNode = this.bodyNode;\n const allTriggerElements = Array.from(this.statesByElement.keys());\n const enterNodeMap = buildRootMap(allTriggerElements, this.collectedEnterElements);\n // this must occur before the instructions are built below such that\n // the :enter queries match the elements (since the timeline queries\n // are fired during instruction building).\n const enterNodeMapIds = new Map();\n let i = 0;\n enterNodeMap.forEach((nodes, root) => {\n const className = ENTER_CLASSNAME + i++;\n enterNodeMapIds.set(root, className);\n nodes.forEach((node) => addClass(node, className));\n });\n const allLeaveNodes = [];\n const mergedLeaveNodes = new Set();\n const leaveNodesWithoutAnimations = new Set();\n for (let i = 0; i < this.collectedLeaveElements.length; i++) {\n const element = this.collectedLeaveElements[i];\n const details = element[REMOVAL_FLAG];\n if (details && details.setForRemoval) {\n allLeaveNodes.push(element);\n mergedLeaveNodes.add(element);\n if (details.hasAnimation) {\n this.driver\n .query(element, STAR_SELECTOR, true)\n .forEach((elm) => mergedLeaveNodes.add(elm));\n }\n else {\n leaveNodesWithoutAnimations.add(element);\n }\n }\n }\n const leaveNodeMapIds = new Map();\n const leaveNodeMap = buildRootMap(allTriggerElements, Array.from(mergedLeaveNodes));\n leaveNodeMap.forEach((nodes, root) => {\n const className = LEAVE_CLASSNAME + i++;\n leaveNodeMapIds.set(root, className);\n nodes.forEach((node) => addClass(node, className));\n });\n cleanupFns.push(() => {\n enterNodeMap.forEach((nodes, root) => {\n const className = enterNodeMapIds.get(root);\n nodes.forEach((node) => removeClass(node, className));\n });\n leaveNodeMap.forEach((nodes, root) => {\n const className = leaveNodeMapIds.get(root);\n nodes.forEach((node) => removeClass(node, className));\n });\n allLeaveNodes.forEach((element) => {\n this.processLeaveNode(element);\n });\n });\n const allPlayers = [];\n const erroneousTransitions = [];\n for (let i = this._namespaceList.length - 1; i >= 0; i--) {\n const ns = this._namespaceList[i];\n ns.drainQueuedTransitions(microtaskId).forEach((entry) => {\n const player = entry.player;\n const element = entry.element;\n allPlayers.push(player);\n if (this.collectedEnterElements.length) {\n const details = element[REMOVAL_FLAG];\n // animations for move operations (elements being removed and reinserted,\n // e.g. when the order of an *ngFor list changes) are currently not supported\n if (details && details.setForMove) {\n if (details.previousTriggersValues &&\n details.previousTriggersValues.has(entry.triggerName)) {\n const previousValue = details.previousTriggersValues.get(entry.triggerName);\n // we need to restore the previous trigger value since the element has\n // only been moved and hasn't actually left the DOM\n const triggersWithStates = this.statesByElement.get(entry.element);\n if (triggersWithStates && triggersWithStates.has(entry.triggerName)) {\n const state = triggersWithStates.get(entry.triggerName);\n state.value = previousValue;\n triggersWithStates.set(entry.triggerName, state);\n }\n }\n player.destroy();\n return;\n }\n }\n const nodeIsOrphaned = !bodyNode || !this.driver.containsElement(bodyNode, element);\n const leaveClassName = leaveNodeMapIds.get(element);\n const enterClassName = enterNodeMapIds.get(element);\n const instruction = this._buildInstruction(entry, subTimelines, enterClassName, leaveClassName, nodeIsOrphaned);\n if (instruction.errors && instruction.errors.length) {\n erroneousTransitions.push(instruction);\n return;\n }\n // even though the element may not be in the DOM, it may still\n // be added at a later point (due to the mechanics of content\n // projection and/or dynamic component insertion) therefore it's\n // important to still style the element.\n if (nodeIsOrphaned) {\n player.onStart(() => eraseStyles(element, instruction.fromStyles));\n player.onDestroy(() => setStyles(element, instruction.toStyles));\n skippedPlayers.push(player);\n return;\n }\n // if an unmatched transition is queued and ready to go\n // then it SHOULD NOT render an animation and cancel the\n // previously running animations.\n if (entry.isFallbackTransition) {\n player.onStart(() => eraseStyles(element, instruction.fromStyles));\n player.onDestroy(() => setStyles(element, instruction.toStyles));\n skippedPlayers.push(player);\n return;\n }\n // this means that if a parent animation uses this animation as a sub-trigger\n // then it will instruct the timeline builder not to add a player delay, but\n // instead stretch the first keyframe gap until the animation starts. This is\n // important in order to prevent extra initialization styles from being\n // required by the user for the animation.\n const timelines = [];\n instruction.timelines.forEach((tl) => {\n tl.stretchStartingKeyframe = true;\n if (!this.disabledNodes.has(tl.element)) {\n timelines.push(tl);\n }\n });\n instruction.timelines = timelines;\n subTimelines.append(element, instruction.timelines);\n const tuple = { instruction, player, element };\n queuedInstructions.push(tuple);\n instruction.queriedElements.forEach((element) => getOrSetDefaultValue(queriedElements, element, []).push(player));\n instruction.preStyleProps.forEach((stringMap, element) => {\n if (stringMap.size) {\n let setVal = allPreStyleElements.get(element);\n if (!setVal) {\n allPreStyleElements.set(element, (setVal = new Set()));\n }\n stringMap.forEach((_, prop) => setVal.add(prop));\n }\n });\n instruction.postStyleProps.forEach((stringMap, element) => {\n let setVal = allPostStyleElements.get(element);\n if (!setVal) {\n allPostStyleElements.set(element, (setVal = new Set()));\n }\n stringMap.forEach((_, prop) => setVal.add(prop));\n });\n });\n }\n if (erroneousTransitions.length) {\n const errors = [];\n erroneousTransitions.forEach((instruction) => {\n errors.push(transitionFailed(instruction.triggerName, instruction.errors));\n });\n allPlayers.forEach((player) => player.destroy());\n this.reportError(errors);\n }\n const allPreviousPlayersMap = new Map();\n // this map tells us which element in the DOM tree is contained by\n // which animation. Further down this map will get populated once\n // the players are built and in doing so we can use it to efficiently\n // figure out if a sub player is skipped due to a parent player having priority.\n const animationElementMap = new Map();\n queuedInstructions.forEach((entry) => {\n const element = entry.element;\n if (subTimelines.has(element)) {\n animationElementMap.set(element, element);\n this._beforeAnimationBuild(entry.player.namespaceId, entry.instruction, allPreviousPlayersMap);\n }\n });\n skippedPlayers.forEach((player) => {\n const element = player.element;\n const previousPlayers = this._getPreviousPlayers(element, false, player.namespaceId, player.triggerName, null);\n previousPlayers.forEach((prevPlayer) => {\n getOrSetDefaultValue(allPreviousPlayersMap, element, []).push(prevPlayer);\n prevPlayer.destroy();\n });\n });\n // this is a special case for nodes that will be removed either by\n // having their own leave animations or by being queried in a container\n // that will be removed once a parent animation is complete. The idea\n // here is that * styles must be identical to ! styles because of\n // backwards compatibility (* is also filled in by default in many places).\n // Otherwise * styles will return an empty value or \"auto\" since the element\n // passed to getComputedStyle will not be visible (since * === destination)\n const replaceNodes = allLeaveNodes.filter((node) => {\n return replacePostStylesAsPre(node, allPreStyleElements, allPostStyleElements);\n });\n // POST STAGE: fill the * styles\n const postStylesMap = new Map();\n const allLeaveQueriedNodes = cloakAndComputeStyles(postStylesMap, this.driver, leaveNodesWithoutAnimations, allPostStyleElements, AUTO_STYLE);\n allLeaveQueriedNodes.forEach((node) => {\n if (replacePostStylesAsPre(node, allPreStyleElements, allPostStyleElements)) {\n replaceNodes.push(node);\n }\n });\n // PRE STAGE: fill the ! styles\n const preStylesMap = new Map();\n enterNodeMap.forEach((nodes, root) => {\n cloakAndComputeStyles(preStylesMap, this.driver, new Set(nodes), allPreStyleElements, ɵPRE_STYLE);\n });\n replaceNodes.forEach((node) => {\n const post = postStylesMap.get(node);\n const pre = preStylesMap.get(node);\n postStylesMap.set(node, new Map([...(post?.entries() ?? []), ...(pre?.entries() ?? [])]));\n });\n const rootPlayers = [];\n const subPlayers = [];\n const NO_PARENT_ANIMATION_ELEMENT_DETECTED = {};\n queuedInstructions.forEach((entry) => {\n const { element, player, instruction } = entry;\n // this means that it was never consumed by a parent animation which\n // means that it is independent and therefore should be set for animation\n if (subTimelines.has(element)) {\n if (disabledElementsSet.has(element)) {\n player.onDestroy(() => setStyles(element, instruction.toStyles));\n player.disabled = true;\n player.overrideTotalTime(instruction.totalTime);\n skippedPlayers.push(player);\n return;\n }\n // this will flow up the DOM and query the map to figure out\n // if a parent animation has priority over it. In the situation\n // that a parent is detected then it will cancel the loop. If\n // nothing is detected, or it takes a few hops to find a parent,\n // then it will fill in the missing nodes and signal them as having\n // a detected parent (or a NO_PARENT value via a special constant).\n let parentWithAnimation = NO_PARENT_ANIMATION_ELEMENT_DETECTED;\n if (animationElementMap.size > 1) {\n let elm = element;\n const parentsToAdd = [];\n while ((elm = elm.parentNode)) {\n const detectedParent = animationElementMap.get(elm);\n if (detectedParent) {\n parentWithAnimation = detectedParent;\n break;\n }\n parentsToAdd.push(elm);\n }\n parentsToAdd.forEach((parent) => animationElementMap.set(parent, parentWithAnimation));\n }\n const innerPlayer = this._buildAnimation(player.namespaceId, instruction, allPreviousPlayersMap, skippedPlayersMap, preStylesMap, postStylesMap);\n player.setRealPlayer(innerPlayer);\n if (parentWithAnimation === NO_PARENT_ANIMATION_ELEMENT_DETECTED) {\n rootPlayers.push(player);\n }\n else {\n const parentPlayers = this.playersByElement.get(parentWithAnimation);\n if (parentPlayers && parentPlayers.length) {\n player.parentPlayer = optimizeGroupPlayer(parentPlayers);\n }\n skippedPlayers.push(player);\n }\n }\n else {\n eraseStyles(element, instruction.fromStyles);\n player.onDestroy(() => setStyles(element, instruction.toStyles));\n // there still might be a ancestor player animating this\n // element therefore we will still add it as a sub player\n // even if its animation may be disabled\n subPlayers.push(player);\n if (disabledElementsSet.has(element)) {\n skippedPlayers.push(player);\n }\n }\n });\n // find all of the sub players' corresponding inner animation players\n subPlayers.forEach((player) => {\n // even if no players are found for a sub animation it\n // will still complete itself after the next tick since it's Noop\n const playersForElement = skippedPlayersMap.get(player.element);\n if (playersForElement && playersForElement.length) {\n const innerPlayer = optimizeGroupPlayer(playersForElement);\n player.setRealPlayer(innerPlayer);\n }\n });\n // the reason why we don't actually play the animation is\n // because all that a skipped player is designed to do is to\n // fire the start/done transition callback events\n skippedPlayers.forEach((player) => {\n if (player.parentPlayer) {\n player.syncPlayerEvents(player.parentPlayer);\n }\n else {\n player.destroy();\n }\n });\n // run through all of the queued removals and see if they\n // were picked up by a query. If not then perform the removal\n // operation right away unless a parent animation is ongoing.\n for (let i = 0; i < allLeaveNodes.length; i++) {\n const element = allLeaveNodes[i];\n const details = element[REMOVAL_FLAG];\n removeClass(element, LEAVE_CLASSNAME);\n // this means the element has a removal animation that is being\n // taken care of and therefore the inner elements will hang around\n // until that animation is over (or the parent queried animation)\n if (details && details.hasAnimation)\n continue;\n let players = [];\n // if this element is queried or if it contains queried children\n // then we want for the element not to be removed from the page\n // until the queried animations have finished\n if (queriedElements.size) {\n let queriedPlayerResults = queriedElements.get(element);\n if (queriedPlayerResults && queriedPlayerResults.length) {\n players.push(...queriedPlayerResults);\n }\n let queriedInnerElements = this.driver.query(element, NG_ANIMATING_SELECTOR, true);\n for (let j = 0; j < queriedInnerElements.length; j++) {\n let queriedPlayers = queriedElements.get(queriedInnerElements[j]);\n if (queriedPlayers && queriedPlayers.length) {\n players.push(...queriedPlayers);\n }\n }\n }\n const activePlayers = players.filter((p) => !p.destroyed);\n if (activePlayers.length) {\n removeNodesAfterAnimationDone(this, element, activePlayers);\n }\n else {\n this.processLeaveNode(element);\n }\n }\n // this is required so the cleanup method doesn't remove them\n allLeaveNodes.length = 0;\n rootPlayers.forEach((player) => {\n this.players.push(player);\n player.onDone(() => {\n player.destroy();\n const index = this.players.indexOf(player);\n this.players.splice(index, 1);\n });\n player.play();\n });\n return rootPlayers;\n }\n afterFlush(callback) {\n this._flushFns.push(callback);\n }\n afterFlushAnimationsDone(callback) {\n this._whenQuietFns.push(callback);\n }\n _getPreviousPlayers(element, isQueriedElement, namespaceId, triggerName, toStateValue) {\n let players = [];\n if (isQueriedElement) {\n const queriedElementPlayers = this.playersByQueriedElement.get(element);\n if (queriedElementPlayers) {\n players = queriedElementPlayers;\n }\n }\n else {\n const elementPlayers = this.playersByElement.get(element);\n if (elementPlayers) {\n const isRemovalAnimation = !toStateValue || toStateValue == VOID_VALUE;\n elementPlayers.forEach((player) => {\n if (player.queued)\n return;\n if (!isRemovalAnimation && player.triggerName != triggerName)\n return;\n players.push(player);\n });\n }\n }\n if (namespaceId || triggerName) {\n players = players.filter((player) => {\n if (namespaceId && namespaceId != player.namespaceId)\n return false;\n if (triggerName && triggerName != player.triggerName)\n return false;\n return true;\n });\n }\n return players;\n }\n _beforeAnimationBuild(namespaceId, instruction, allPreviousPlayersMap) {\n const triggerName = instruction.triggerName;\n const rootElement = instruction.element;\n // when a removal animation occurs, ALL previous players are collected\n // and destroyed (even if they are outside of the current namespace)\n const targetNameSpaceId = instruction.isRemovalTransition\n ? undefined\n : namespaceId;\n const targetTriggerName = instruction.isRemovalTransition\n ? undefined\n : triggerName;\n for (const timelineInstruction of instruction.timelines) {\n const element = timelineInstruction.element;\n const isQueriedElement = element !== rootElement;\n const players = getOrSetDefaultValue(allPreviousPlayersMap, element, []);\n const previousPlayers = this._getPreviousPlayers(element, isQueriedElement, targetNameSpaceId, targetTriggerName, instruction.toState);\n previousPlayers.forEach((player) => {\n const realPlayer = player.getRealPlayer();\n if (realPlayer.beforeDestroy) {\n realPlayer.beforeDestroy();\n }\n player.destroy();\n players.push(player);\n });\n }\n // this needs to be done so that the PRE/POST styles can be\n // computed properly without interfering with the previous animation\n eraseStyles(rootElement, instruction.fromStyles);\n }\n _buildAnimation(namespaceId, instruction, allPreviousPlayersMap, skippedPlayersMap, preStylesMap, postStylesMap) {\n const triggerName = instruction.triggerName;\n const rootElement = instruction.element;\n // we first run this so that the previous animation player\n // data can be passed into the successive animation players\n const allQueriedPlayers = [];\n const allConsumedElements = new Set();\n const allSubElements = new Set();\n const allNewPlayers = instruction.timelines.map((timelineInstruction) => {\n const element = timelineInstruction.element;\n allConsumedElements.add(element);\n // FIXME (matsko): make sure to-be-removed animations are removed properly\n const details = element[REMOVAL_FLAG];\n if (details && details.removedBeforeQueried)\n return new NoopAnimationPlayer(timelineInstruction.duration, timelineInstruction.delay);\n const isQueriedElement = element !== rootElement;\n const previousPlayers = flattenGroupPlayers((allPreviousPlayersMap.get(element) || EMPTY_PLAYER_ARRAY).map((p) => p.getRealPlayer())).filter((p) => {\n // the `element` is not apart of the AnimationPlayer definition, but\n // Mock/WebAnimations\n // use the element within their implementation. This will be added in Angular5 to\n // AnimationPlayer\n const pp = p;\n return pp.element ? pp.element === element : false;\n });\n const preStyles = preStylesMap.get(element);\n const postStyles = postStylesMap.get(element);\n const keyframes = normalizeKeyframes$1(this._normalizer, timelineInstruction.keyframes, preStyles, postStyles);\n const player = this._buildPlayer(timelineInstruction, keyframes, previousPlayers);\n // this means that this particular player belongs to a sub trigger. It is\n // important that we match this player up with the corresponding (@trigger.listener)\n if (timelineInstruction.subTimeline && skippedPlayersMap) {\n allSubElements.add(element);\n }\n if (isQueriedElement) {\n const wrappedPlayer = new TransitionAnimationPlayer(namespaceId, triggerName, element);\n wrappedPlayer.setRealPlayer(player);\n allQueriedPlayers.push(wrappedPlayer);\n }\n return player;\n });\n allQueriedPlayers.forEach((player) => {\n getOrSetDefaultValue(this.playersByQueriedElement, player.element, []).push(player);\n player.onDone(() => deleteOrUnsetInMap(this.playersByQueriedElement, player.element, player));\n });\n allConsumedElements.forEach((element) => addClass(element, NG_ANIMATING_CLASSNAME));\n const player = optimizeGroupPlayer(allNewPlayers);\n player.onDestroy(() => {\n allConsumedElements.forEach((element) => removeClass(element, NG_ANIMATING_CLASSNAME));\n setStyles(rootElement, instruction.toStyles);\n });\n // this basically makes all of the callbacks for sub element animations\n // be dependent on the upper players for when they finish\n allSubElements.forEach((element) => {\n getOrSetDefaultValue(skippedPlayersMap, element, []).push(player);\n });\n return player;\n }\n _buildPlayer(instruction, keyframes, previousPlayers) {\n if (keyframes.length > 0) {\n return this.driver.animate(instruction.element, keyframes, instruction.duration, instruction.delay, instruction.easing, previousPlayers);\n }\n // special case for when an empty transition|definition is provided\n // ... there is no point in rendering an empty animation\n return new NoopAnimationPlayer(instruction.duration, instruction.delay);\n }\n}\nclass TransitionAnimationPlayer {\n constructor(namespaceId, triggerName, element) {\n this.namespaceId = namespaceId;\n this.triggerName = triggerName;\n this.element = element;\n this._player = new NoopAnimationPlayer();\n this._containsRealPlayer = false;\n this._queuedCallbacks = new Map();\n this.destroyed = false;\n this.parentPlayer = null;\n this.markedForDestroy = false;\n this.disabled = false;\n this.queued = true;\n this.totalTime = 0;\n }\n setRealPlayer(player) {\n if (this._containsRealPlayer)\n return;\n this._player = player;\n this._queuedCallbacks.forEach((callbacks, phase) => {\n callbacks.forEach((callback) => listenOnPlayer(player, phase, undefined, callback));\n });\n this._queuedCallbacks.clear();\n this._containsRealPlayer = true;\n this.overrideTotalTime(player.totalTime);\n this.queued = false;\n }\n getRealPlayer() {\n return this._player;\n }\n overrideTotalTime(totalTime) {\n this.totalTime = totalTime;\n }\n syncPlayerEvents(player) {\n const p = this._player;\n if (p.triggerCallback) {\n player.onStart(() => p.triggerCallback('start'));\n }\n player.onDone(() => this.finish());\n player.onDestroy(() => this.destroy());\n }\n _queueEvent(name, callback) {\n getOrSetDefaultValue(this._queuedCallbacks, name, []).push(callback);\n }\n onDone(fn) {\n if (this.queued) {\n this._queueEvent('done', fn);\n }\n this._player.onDone(fn);\n }\n onStart(fn) {\n if (this.queued) {\n this._queueEvent('start', fn);\n }\n this._player.onStart(fn);\n }\n onDestroy(fn) {\n if (this.queued) {\n this._queueEvent('destroy', fn);\n }\n this._player.onDestroy(fn);\n }\n init() {\n this._player.init();\n }\n hasStarted() {\n return this.queued ? false : this._player.hasStarted();\n }\n play() {\n !this.queued && this._player.play();\n }\n pause() {\n !this.queued && this._player.pause();\n }\n restart() {\n !this.queued && this._player.restart();\n }\n finish() {\n this._player.finish();\n }\n destroy() {\n this.destroyed = true;\n this._player.destroy();\n }\n reset() {\n !this.queued && this._player.reset();\n }\n setPosition(p) {\n if (!this.queued) {\n this._player.setPosition(p);\n }\n }\n getPosition() {\n return this.queued ? 0 : this._player.getPosition();\n }\n /** @internal */\n triggerCallback(phaseName) {\n const p = this._player;\n if (p.triggerCallback) {\n p.triggerCallback(phaseName);\n }\n }\n}\nfunction deleteOrUnsetInMap(map, key, value) {\n let currentValues = map.get(key);\n if (currentValues) {\n if (currentValues.length) {\n const index = currentValues.indexOf(value);\n currentValues.splice(index, 1);\n }\n if (currentValues.length == 0) {\n map.delete(key);\n }\n }\n return currentValues;\n}\nfunction normalizeTriggerValue(value) {\n // we use `!= null` here because it's the most simple\n // way to test against a \"falsy\" value without mixing\n // in empty strings or a zero value. DO NOT OPTIMIZE.\n return value != null ? value : null;\n}\nfunction isElementNode(node) {\n return node && node['nodeType'] === 1;\n}\nfunction isTriggerEventValid(eventName) {\n return eventName == 'start' || eventName == 'done';\n}\nfunction cloakElement(element, value) {\n const oldValue = element.style.display;\n element.style.display = value != null ? value : 'none';\n return oldValue;\n}\nfunction cloakAndComputeStyles(valuesMap, driver, elements, elementPropsMap, defaultStyle) {\n const cloakVals = [];\n elements.forEach((element) => cloakVals.push(cloakElement(element)));\n const failedElements = [];\n elementPropsMap.forEach((props, element) => {\n const styles = new Map();\n props.forEach((prop) => {\n const value = driver.computeStyle(element, prop, defaultStyle);\n styles.set(prop, value);\n // there is no easy way to detect this because a sub element could be removed\n // by a parent animation element being detached.\n if (!value || value.length == 0) {\n element[REMOVAL_FLAG] = NULL_REMOVED_QUERIED_STATE;\n failedElements.push(element);\n }\n });\n valuesMap.set(element, styles);\n });\n // we use a index variable here since Set.forEach(a, i) does not return\n // an index value for the closure (but instead just the value)\n let i = 0;\n elements.forEach((element) => cloakElement(element, cloakVals[i++]));\n return failedElements;\n}\n/*\nSince the Angular renderer code will return a collection of inserted\nnodes in all areas of a DOM tree, it's up to this algorithm to figure\nout which nodes are roots for each animation @trigger.\n\nBy placing each inserted node into a Set and traversing upwards, it\nis possible to find the @trigger elements and well any direct *star\ninsertion nodes, if a @trigger root is found then the enter element\nis placed into the Map[@trigger] spot.\n */\nfunction buildRootMap(roots, nodes) {\n const rootMap = new Map();\n roots.forEach((root) => rootMap.set(root, []));\n if (nodes.length == 0)\n return rootMap;\n const NULL_NODE = 1;\n const nodeSet = new Set(nodes);\n const localRootMap = new Map();\n function getRoot(node) {\n if (!node)\n return NULL_NODE;\n let root = localRootMap.get(node);\n if (root)\n return root;\n const parent = node.parentNode;\n if (rootMap.has(parent)) {\n // ngIf inside @trigger\n root = parent;\n }\n else if (nodeSet.has(parent)) {\n // ngIf inside ngIf\n root = NULL_NODE;\n }\n else {\n // recurse upwards\n root = getRoot(parent);\n }\n localRootMap.set(node, root);\n return root;\n }\n nodes.forEach((node) => {\n const root = getRoot(node);\n if (root !== NULL_NODE) {\n rootMap.get(root).push(node);\n }\n });\n return rootMap;\n}\nfunction addClass(element, className) {\n element.classList?.add(className);\n}\nfunction removeClass(element, className) {\n element.classList?.remove(className);\n}\nfunction removeNodesAfterAnimationDone(engine, element, players) {\n optimizeGroupPlayer(players).onDone(() => engine.processLeaveNode(element));\n}\nfunction flattenGroupPlayers(players) {\n const finalPlayers = [];\n _flattenGroupPlayersRecur(players, finalPlayers);\n return finalPlayers;\n}\nfunction _flattenGroupPlayersRecur(players, finalPlayers) {\n for (let i = 0; i < players.length; i++) {\n const player = players[i];\n if (player instanceof ɵAnimationGroupPlayer) {\n _flattenGroupPlayersRecur(player.players, finalPlayers);\n }\n else {\n finalPlayers.push(player);\n }\n }\n}\nfunction objEquals(a, b) {\n const k1 = Object.keys(a);\n const k2 = Object.keys(b);\n if (k1.length != k2.length)\n return false;\n for (let i = 0; i < k1.length; i++) {\n const prop = k1[i];\n if (!b.hasOwnProperty(prop) || a[prop] !== b[prop])\n return false;\n }\n return true;\n}\nfunction replacePostStylesAsPre(element, allPreStyleElements, allPostStyleElements) {\n const postEntry = allPostStyleElements.get(element);\n if (!postEntry)\n return false;\n let preEntry = allPreStyleElements.get(element);\n if (preEntry) {\n postEntry.forEach((data) => preEntry.add(data));\n }\n else {\n allPreStyleElements.set(element, postEntry);\n }\n allPostStyleElements.delete(element);\n return true;\n}\n\nclass AnimationEngine {\n constructor(doc, _driver, _normalizer, scheduler) {\n this._driver = _driver;\n this._normalizer = _normalizer;\n this._triggerCache = {};\n // this method is designed to be overridden by the code that uses this engine\n this.onRemovalComplete = (element, context) => { };\n this._transitionEngine = new TransitionAnimationEngine(doc.body, _driver, _normalizer, scheduler);\n this._timelineEngine = new TimelineAnimationEngine(doc.body, _driver, _normalizer);\n this._transitionEngine.onRemovalComplete = (element, context) => this.onRemovalComplete(element, context);\n }\n registerTrigger(componentId, namespaceId, hostElement, name, metadata) {\n const cacheKey = componentId + '-' + name;\n let trigger = this._triggerCache[cacheKey];\n if (!trigger) {\n const errors = [];\n const warnings = [];\n const ast = buildAnimationAst(this._driver, metadata, errors, warnings);\n if (errors.length) {\n throw triggerBuildFailed(name, errors);\n }\n if (warnings.length) {\n warnTriggerBuild(name, warnings);\n }\n trigger = buildTrigger(name, ast, this._normalizer);\n this._triggerCache[cacheKey] = trigger;\n }\n this._transitionEngine.registerTrigger(namespaceId, name, trigger);\n }\n register(namespaceId, hostElement) {\n this._transitionEngine.register(namespaceId, hostElement);\n }\n destroy(namespaceId, context) {\n this._transitionEngine.destroy(namespaceId, context);\n }\n onInsert(namespaceId, element, parent, insertBefore) {\n this._transitionEngine.insertNode(namespaceId, element, parent, insertBefore);\n }\n onRemove(namespaceId, element, context) {\n this._transitionEngine.removeNode(namespaceId, element, context);\n }\n disableAnimations(element, disable) {\n this._transitionEngine.markElementAsDisabled(element, disable);\n }\n process(namespaceId, element, property, value) {\n if (property.charAt(0) == '@') {\n const [id, action] = parseTimelineCommand(property);\n const args = value;\n this._timelineEngine.command(id, element, action, args);\n }\n else {\n this._transitionEngine.trigger(namespaceId, element, property, value);\n }\n }\n listen(namespaceId, element, eventName, eventPhase, callback) {\n // @@listen\n if (eventName.charAt(0) == '@') {\n const [id, action] = parseTimelineCommand(eventName);\n return this._timelineEngine.listen(id, element, action, callback);\n }\n return this._transitionEngine.listen(namespaceId, element, eventName, eventPhase, callback);\n }\n flush(microtaskId = -1) {\n this._transitionEngine.flush(microtaskId);\n }\n get players() {\n return [...this._transitionEngine.players, ...this._timelineEngine.players];\n }\n whenRenderingDone() {\n return this._transitionEngine.whenRenderingDone();\n }\n afterFlushAnimationsDone(cb) {\n this._transitionEngine.afterFlushAnimationsDone(cb);\n }\n}\n\n/**\n * Returns an instance of `SpecialCasedStyles` if and when any special (non animateable) styles are\n * detected.\n *\n * In CSS there exist properties that cannot be animated within a keyframe animation\n * (whether it be via CSS keyframes or web-animations) and the animation implementation\n * will ignore them. This function is designed to detect those special cased styles and\n * return a container that will be executed at the start and end of the animation.\n *\n * @returns an instance of `SpecialCasedStyles` if any special styles are detected otherwise `null`\n */\nfunction packageNonAnimatableStyles(element, styles) {\n let startStyles = null;\n let endStyles = null;\n if (Array.isArray(styles) && styles.length) {\n startStyles = filterNonAnimatableStyles(styles[0]);\n if (styles.length > 1) {\n endStyles = filterNonAnimatableStyles(styles[styles.length - 1]);\n }\n }\n else if (styles instanceof Map) {\n startStyles = filterNonAnimatableStyles(styles);\n }\n return startStyles || endStyles ? new SpecialCasedStyles(element, startStyles, endStyles) : null;\n}\n/**\n * Designed to be executed during a keyframe-based animation to apply any special-cased styles.\n *\n * When started (when the `start()` method is run) then the provided `startStyles`\n * will be applied. When finished (when the `finish()` method is called) the\n * `endStyles` will be applied as well any any starting styles. Finally when\n * `destroy()` is called then all styles will be removed.\n */\nclass SpecialCasedStyles {\n static { this.initialStylesByElement = new WeakMap(); }\n constructor(_element, _startStyles, _endStyles) {\n this._element = _element;\n this._startStyles = _startStyles;\n this._endStyles = _endStyles;\n this._state = 0 /* SpecialCasedStylesState.Pending */;\n let initialStyles = SpecialCasedStyles.initialStylesByElement.get(_element);\n if (!initialStyles) {\n SpecialCasedStyles.initialStylesByElement.set(_element, (initialStyles = new Map()));\n }\n this._initialStyles = initialStyles;\n }\n start() {\n if (this._state < 1 /* SpecialCasedStylesState.Started */) {\n if (this._startStyles) {\n setStyles(this._element, this._startStyles, this._initialStyles);\n }\n this._state = 1 /* SpecialCasedStylesState.Started */;\n }\n }\n finish() {\n this.start();\n if (this._state < 2 /* SpecialCasedStylesState.Finished */) {\n setStyles(this._element, this._initialStyles);\n if (this._endStyles) {\n setStyles(this._element, this._endStyles);\n this._endStyles = null;\n }\n this._state = 1 /* SpecialCasedStylesState.Started */;\n }\n }\n destroy() {\n this.finish();\n if (this._state < 3 /* SpecialCasedStylesState.Destroyed */) {\n SpecialCasedStyles.initialStylesByElement.delete(this._element);\n if (this._startStyles) {\n eraseStyles(this._element, this._startStyles);\n this._endStyles = null;\n }\n if (this._endStyles) {\n eraseStyles(this._element, this._endStyles);\n this._endStyles = null;\n }\n setStyles(this._element, this._initialStyles);\n this._state = 3 /* SpecialCasedStylesState.Destroyed */;\n }\n }\n}\nfunction filterNonAnimatableStyles(styles) {\n let result = null;\n styles.forEach((val, prop) => {\n if (isNonAnimatableStyle(prop)) {\n result = result || new Map();\n result.set(prop, val);\n }\n });\n return result;\n}\nfunction isNonAnimatableStyle(prop) {\n return prop === 'display' || prop === 'position';\n}\n\nclass WebAnimationsPlayer {\n constructor(element, keyframes, options, _specialStyles) {\n this.element = element;\n this.keyframes = keyframes;\n this.options = options;\n this._specialStyles = _specialStyles;\n this._onDoneFns = [];\n this._onStartFns = [];\n this._onDestroyFns = [];\n this._initialized = false;\n this._finished = false;\n this._started = false;\n this._destroyed = false;\n // the following original fns are persistent copies of the _onStartFns and _onDoneFns\n // and are used to reset the fns to their original values upon reset()\n // (since the _onStartFns and _onDoneFns get deleted after they are called)\n this._originalOnDoneFns = [];\n this._originalOnStartFns = [];\n this.time = 0;\n this.parentPlayer = null;\n this.currentSnapshot = new Map();\n this._duration = options['duration'];\n this._delay = options['delay'] || 0;\n this.time = this._duration + this._delay;\n }\n _onFinish() {\n if (!this._finished) {\n this._finished = true;\n this._onDoneFns.forEach((fn) => fn());\n this._onDoneFns = [];\n }\n }\n init() {\n this._buildPlayer();\n this._preparePlayerBeforeStart();\n }\n _buildPlayer() {\n if (this._initialized)\n return;\n this._initialized = true;\n const keyframes = this.keyframes;\n // @ts-expect-error overwriting a readonly property\n this.domPlayer = this._triggerWebAnimation(this.element, keyframes, this.options);\n this._finalKeyframe = keyframes.length ? keyframes[keyframes.length - 1] : new Map();\n const onFinish = () => this._onFinish();\n this.domPlayer.addEventListener('finish', onFinish);\n this.onDestroy(() => {\n // We must remove the `finish` event listener once an animation has completed all its\n // iterations. This action is necessary to prevent a memory leak since the listener captures\n // `this`, creating a closure that prevents `this` from being garbage collected.\n this.domPlayer.removeEventListener('finish', onFinish);\n });\n }\n _preparePlayerBeforeStart() {\n // this is required so that the player doesn't start to animate right away\n if (this._delay) {\n this._resetDomPlayerState();\n }\n else {\n this.domPlayer.pause();\n }\n }\n _convertKeyframesToObject(keyframes) {\n const kfs = [];\n keyframes.forEach((frame) => {\n kfs.push(Object.fromEntries(frame));\n });\n return kfs;\n }\n /** @internal */\n _triggerWebAnimation(element, keyframes, options) {\n return element.animate(this._convertKeyframesToObject(keyframes), options);\n }\n onStart(fn) {\n this._originalOnStartFns.push(fn);\n this._onStartFns.push(fn);\n }\n onDone(fn) {\n this._originalOnDoneFns.push(fn);\n this._onDoneFns.push(fn);\n }\n onDestroy(fn) {\n this._onDestroyFns.push(fn);\n }\n play() {\n this._buildPlayer();\n if (!this.hasStarted()) {\n this._onStartFns.forEach((fn) => fn());\n this._onStartFns = [];\n this._started = true;\n if (this._specialStyles) {\n this._specialStyles.start();\n }\n }\n this.domPlayer.play();\n }\n pause() {\n this.init();\n this.domPlayer.pause();\n }\n finish() {\n this.init();\n if (this._specialStyles) {\n this._specialStyles.finish();\n }\n this._onFinish();\n this.domPlayer.finish();\n }\n reset() {\n this._resetDomPlayerState();\n this._destroyed = false;\n this._finished = false;\n this._started = false;\n this._onStartFns = this._originalOnStartFns;\n this._onDoneFns = this._originalOnDoneFns;\n }\n _resetDomPlayerState() {\n if (this.domPlayer) {\n this.domPlayer.cancel();\n }\n }\n restart() {\n this.reset();\n this.play();\n }\n hasStarted() {\n return this._started;\n }\n destroy() {\n if (!this._destroyed) {\n this._destroyed = true;\n this._resetDomPlayerState();\n this._onFinish();\n if (this._specialStyles) {\n this._specialStyles.destroy();\n }\n this._onDestroyFns.forEach((fn) => fn());\n this._onDestroyFns = [];\n }\n }\n setPosition(p) {\n if (this.domPlayer === undefined) {\n this.init();\n }\n this.domPlayer.currentTime = p * this.time;\n }\n getPosition() {\n // tsc is complaining with TS2362 without the conversion to number\n return +(this.domPlayer.currentTime ?? 0) / this.time;\n }\n get totalTime() {\n return this._delay + this._duration;\n }\n beforeDestroy() {\n const styles = new Map();\n if (this.hasStarted()) {\n // note: this code is invoked only when the `play` function was called prior to this\n // (thus `hasStarted` returns true), this implies that the code that initializes\n // `_finalKeyframe` has also been executed and the non-null assertion can be safely used here\n const finalKeyframe = this._finalKeyframe;\n finalKeyframe.forEach((val, prop) => {\n if (prop !== 'offset') {\n styles.set(prop, this._finished ? val : computeStyle(this.element, prop));\n }\n });\n }\n this.currentSnapshot = styles;\n }\n /** @internal */\n triggerCallback(phaseName) {\n const methods = phaseName === 'start' ? this._onStartFns : this._onDoneFns;\n methods.forEach((fn) => fn());\n methods.length = 0;\n }\n}\n\nclass WebAnimationsDriver {\n validateStyleProperty(prop) {\n // Perform actual validation in dev mode only, in prod mode this check is a noop.\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n return validateStyleProperty(prop);\n }\n return true;\n }\n validateAnimatableStyleProperty(prop) {\n // Perform actual validation in dev mode only, in prod mode this check is a noop.\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n const cssProp = camelCaseToDashCase(prop);\n return validateWebAnimatableStyleProperty(cssProp);\n }\n return true;\n }\n matchesElement(_element, _selector) {\n // This method is deprecated and no longer in use so we return false.\n return false;\n }\n containsElement(elm1, elm2) {\n return containsElement(elm1, elm2);\n }\n getParentElement(element) {\n return getParentElement(element);\n }\n query(element, selector, multi) {\n return invokeQuery(element, selector, multi);\n }\n computeStyle(element, prop, defaultValue) {\n return computeStyle(element, prop);\n }\n animate(element, keyframes, duration, delay, easing, previousPlayers = []) {\n const fill = delay == 0 ? 'both' : 'forwards';\n const playerOptions = { duration, delay, fill };\n // we check for this to avoid having a null|undefined value be present\n // for the easing (which results in an error for certain browsers #9752)\n if (easing) {\n playerOptions['easing'] = easing;\n }\n const previousStyles = new Map();\n const previousWebAnimationPlayers = (previousPlayers.filter((player) => player instanceof WebAnimationsPlayer));\n if (allowPreviousPlayerStylesMerge(duration, delay)) {\n previousWebAnimationPlayers.forEach((player) => {\n player.currentSnapshot.forEach((val, prop) => previousStyles.set(prop, val));\n });\n }\n let _keyframes = normalizeKeyframes(keyframes).map((styles) => new Map(styles));\n _keyframes = balancePreviousStylesIntoKeyframes(element, _keyframes, previousStyles);\n const specialStyles = packageNonAnimatableStyles(element, _keyframes);\n return new WebAnimationsPlayer(element, _keyframes, playerOptions, specialStyles);\n }\n}\n\nfunction createEngine(type, doc, scheduler) {\n // TODO: find a way to make this tree shakable.\n if (type === 'noop') {\n return new AnimationEngine(doc, new NoopAnimationDriver(), new NoopAnimationStyleNormalizer(), scheduler);\n }\n return new AnimationEngine(doc, new WebAnimationsDriver(), new WebAnimationsStyleNormalizer(), scheduler);\n}\n\nclass Animation {\n constructor(_driver, input) {\n this._driver = _driver;\n const errors = [];\n const warnings = [];\n const ast = buildAnimationAst(_driver, input, errors, warnings);\n if (errors.length) {\n throw validationFailed(errors);\n }\n if (warnings.length) {\n warnValidation(warnings);\n }\n this._animationAst = ast;\n }\n buildTimelines(element, startingStyles, destinationStyles, options, subInstructions) {\n const start = Array.isArray(startingStyles)\n ? normalizeStyles(startingStyles)\n : startingStyles;\n const dest = Array.isArray(destinationStyles)\n ? normalizeStyles(destinationStyles)\n : destinationStyles;\n const errors = [];\n subInstructions = subInstructions || new ElementInstructionMap();\n const result = buildAnimationTimelines(this._driver, element, this._animationAst, ENTER_CLASSNAME, LEAVE_CLASSNAME, start, dest, options, subInstructions, errors);\n if (errors.length) {\n throw buildingFailed(errors);\n }\n return result;\n }\n}\n\nconst ANIMATION_PREFIX = '@';\nconst DISABLE_ANIMATIONS_FLAG = '@.disabled';\nclass BaseAnimationRenderer {\n constructor(namespaceId, delegate, engine, _onDestroy) {\n this.namespaceId = namespaceId;\n this.delegate = delegate;\n this.engine = engine;\n this._onDestroy = _onDestroy;\n // We need to explicitly type this property because of an api-extractor bug\n // See https://github.com/microsoft/rushstack/issues/4390\n this.ɵtype = 0 /* AnimationRendererType.Regular */;\n }\n get data() {\n return this.delegate.data;\n }\n destroyNode(node) {\n this.delegate.destroyNode?.(node);\n }\n destroy() {\n this.engine.destroy(this.namespaceId, this.delegate);\n this.engine.afterFlushAnimationsDone(() => {\n // Call the renderer destroy method after the animations has finished as otherwise\n // styles will be removed too early which will cause an unstyled animation.\n queueMicrotask(() => {\n this.delegate.destroy();\n });\n });\n this._onDestroy?.();\n }\n createElement(name, namespace) {\n return this.delegate.createElement(name, namespace);\n }\n createComment(value) {\n return this.delegate.createComment(value);\n }\n createText(value) {\n return this.delegate.createText(value);\n }\n appendChild(parent, newChild) {\n this.delegate.appendChild(parent, newChild);\n this.engine.onInsert(this.namespaceId, newChild, parent, false);\n }\n insertBefore(parent, newChild, refChild, isMove = true) {\n this.delegate.insertBefore(parent, newChild, refChild);\n // If `isMove` true than we should animate this insert.\n this.engine.onInsert(this.namespaceId, newChild, parent, isMove);\n }\n removeChild(parent, oldChild, isHostElement) {\n this.engine.onRemove(this.namespaceId, oldChild, this.delegate);\n }\n selectRootElement(selectorOrNode, preserveContent) {\n return this.delegate.selectRootElement(selectorOrNode, preserveContent);\n }\n parentNode(node) {\n return this.delegate.parentNode(node);\n }\n nextSibling(node) {\n return this.delegate.nextSibling(node);\n }\n setAttribute(el, name, value, namespace) {\n this.delegate.setAttribute(el, name, value, namespace);\n }\n removeAttribute(el, name, namespace) {\n this.delegate.removeAttribute(el, name, namespace);\n }\n addClass(el, name) {\n this.delegate.addClass(el, name);\n }\n removeClass(el, name) {\n this.delegate.removeClass(el, name);\n }\n setStyle(el, style, value, flags) {\n this.delegate.setStyle(el, style, value, flags);\n }\n removeStyle(el, style, flags) {\n this.delegate.removeStyle(el, style, flags);\n }\n setProperty(el, name, value) {\n if (name.charAt(0) == ANIMATION_PREFIX && name == DISABLE_ANIMATIONS_FLAG) {\n this.disableAnimations(el, !!value);\n }\n else {\n this.delegate.setProperty(el, name, value);\n }\n }\n setValue(node, value) {\n this.delegate.setValue(node, value);\n }\n listen(target, eventName, callback) {\n return this.delegate.listen(target, eventName, callback);\n }\n disableAnimations(element, value) {\n this.engine.disableAnimations(element, value);\n }\n}\nclass AnimationRenderer extends BaseAnimationRenderer {\n constructor(factory, namespaceId, delegate, engine, onDestroy) {\n super(namespaceId, delegate, engine, onDestroy);\n this.factory = factory;\n this.namespaceId = namespaceId;\n }\n setProperty(el, name, value) {\n if (name.charAt(0) == ANIMATION_PREFIX) {\n if (name.charAt(1) == '.' && name == DISABLE_ANIMATIONS_FLAG) {\n value = value === undefined ? true : !!value;\n this.disableAnimations(el, value);\n }\n else {\n this.engine.process(this.namespaceId, el, name.slice(1), value);\n }\n }\n else {\n this.delegate.setProperty(el, name, value);\n }\n }\n listen(target, eventName, callback) {\n if (eventName.charAt(0) == ANIMATION_PREFIX) {\n const element = resolveElementFromTarget(target);\n let name = eventName.slice(1);\n let phase = '';\n // @listener.phase is for trigger animation callbacks\n // @@listener is for animation builder callbacks\n if (name.charAt(0) != ANIMATION_PREFIX) {\n [name, phase] = parseTriggerCallbackName(name);\n }\n return this.engine.listen(this.namespaceId, element, name, phase, (event) => {\n const countId = event['_data'] || -1;\n this.factory.scheduleListenerCallback(countId, callback, event);\n });\n }\n return this.delegate.listen(target, eventName, callback);\n }\n}\nfunction resolveElementFromTarget(target) {\n switch (target) {\n case 'body':\n return document.body;\n case 'document':\n return document;\n case 'window':\n return window;\n default:\n return target;\n }\n}\nfunction parseTriggerCallbackName(triggerName) {\n const dotIndex = triggerName.indexOf('.');\n const trigger = triggerName.substring(0, dotIndex);\n const phase = triggerName.slice(dotIndex + 1);\n return [trigger, phase];\n}\n\nclass AnimationRendererFactory {\n constructor(delegate, engine, _zone) {\n this.delegate = delegate;\n this.engine = engine;\n this._zone = _zone;\n this._currentId = 0;\n this._microtaskId = 1;\n this._animationCallbacksBuffer = [];\n this._rendererCache = new Map();\n this._cdRecurDepth = 0;\n engine.onRemovalComplete = (element, delegate) => {\n // Note: if a component element has a leave animation, and a host leave animation,\n // the view engine will call `removeChild` for the parent\n // component renderer as well as for the child component renderer.\n // Therefore, we need to check if we already removed the element.\n const parentNode = delegate?.parentNode(element);\n if (parentNode) {\n delegate.removeChild(parentNode, element);\n }\n };\n }\n createRenderer(hostElement, type) {\n const EMPTY_NAMESPACE_ID = '';\n // cache the delegates to find out which cached delegate can\n // be used by which cached renderer\n const delegate = this.delegate.createRenderer(hostElement, type);\n if (!hostElement || !type?.data?.['animation']) {\n const cache = this._rendererCache;\n let renderer = cache.get(delegate);\n if (!renderer) {\n // Ensure that the renderer is removed from the cache on destroy\n // since it may contain references to detached DOM nodes.\n const onRendererDestroy = () => cache.delete(delegate);\n renderer = new BaseAnimationRenderer(EMPTY_NAMESPACE_ID, delegate, this.engine, onRendererDestroy);\n // only cache this result when the base renderer is used\n cache.set(delegate, renderer);\n }\n return renderer;\n }\n const componentId = type.id;\n const namespaceId = type.id + '-' + this._currentId;\n this._currentId++;\n this.engine.register(namespaceId, hostElement);\n const registerTrigger = (trigger) => {\n if (Array.isArray(trigger)) {\n trigger.forEach(registerTrigger);\n }\n else {\n this.engine.registerTrigger(componentId, namespaceId, hostElement, trigger.name, trigger);\n }\n };\n const animationTriggers = type.data['animation'];\n animationTriggers.forEach(registerTrigger);\n return new AnimationRenderer(this, namespaceId, delegate, this.engine);\n }\n begin() {\n this._cdRecurDepth++;\n if (this.delegate.begin) {\n this.delegate.begin();\n }\n }\n _scheduleCountTask() {\n queueMicrotask(() => {\n this._microtaskId++;\n });\n }\n /** @internal */\n scheduleListenerCallback(count, fn, data) {\n if (count >= 0 && count < this._microtaskId) {\n this._zone.run(() => fn(data));\n return;\n }\n const animationCallbacksBuffer = this._animationCallbacksBuffer;\n if (animationCallbacksBuffer.length == 0) {\n queueMicrotask(() => {\n this._zone.run(() => {\n animationCallbacksBuffer.forEach((tuple) => {\n const [fn, data] = tuple;\n fn(data);\n });\n this._animationCallbacksBuffer = [];\n });\n });\n }\n animationCallbacksBuffer.push([fn, data]);\n }\n end() {\n this._cdRecurDepth--;\n // this is to prevent animations from running twice when an inner\n // component does CD when a parent component instead has inserted it\n if (this._cdRecurDepth == 0) {\n this._zone.runOutsideAngular(() => {\n this._scheduleCountTask();\n this.engine.flush(this._microtaskId);\n });\n }\n if (this.delegate.end) {\n this.delegate.end();\n }\n }\n whenRenderingDone() {\n return this.engine.whenRenderingDone();\n }\n}\n\n/**\n * @module\n * @description\n * Entry point for all animation APIs of the animation browser package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AnimationDriver, NoopAnimationDriver, Animation as ɵAnimation, AnimationEngine as ɵAnimationEngine, AnimationRenderer as ɵAnimationRenderer, AnimationRendererFactory as ɵAnimationRendererFactory, AnimationStyleNormalizer as ɵAnimationStyleNormalizer, BaseAnimationRenderer as ɵBaseAnimationRenderer, NoopAnimationStyleNormalizer as ɵNoopAnimationStyleNormalizer, WebAnimationsDriver as ɵWebAnimationsDriver, WebAnimationsPlayer as ɵWebAnimationsPlayer, WebAnimationsStyleNormalizer as ɵWebAnimationsStyleNormalizer, allowPreviousPlayerStylesMerge as ɵallowPreviousPlayerStylesMerge, camelCaseToDashCase as ɵcamelCaseToDashCase, containsElement as ɵcontainsElement, createEngine as ɵcreateEngine, getParentElement as ɵgetParentElement, invokeQuery as ɵinvokeQuery, normalizeKeyframes as ɵnormalizeKeyframes, validateStyleProperty as ɵvalidateStyleProperty, validateWebAnimatableStyleProperty as ɵvalidateWebAnimatableStyleProperty };\n","import { DOCUMENT } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { inject, APP_ID, Injectable, Inject, QueryList, isSignal, effect, booleanAttribute, Directive, Input, InjectionToken, Optional, EventEmitter, Output, NgModule } from '@angular/core';\nimport * as i1 from '@angular/cdk/platform';\nimport { Platform, _getFocusedElementPierceShadowDom, normalizePassiveListenerOptions, _getEventTarget, _getShadowRoot } from '@angular/cdk/platform';\nimport { Subject, Subscription, BehaviorSubject, of } from 'rxjs';\nimport { hasModifierKey, A, Z, ZERO, NINE, PAGE_DOWN, PAGE_UP, END, HOME, LEFT_ARROW, RIGHT_ARROW, UP_ARROW, DOWN_ARROW, TAB, ALT, CONTROL, MAC_META, META, SHIFT } from '@angular/cdk/keycodes';\nimport { tap, debounceTime, filter, map, take, skip, distinctUntilChanged, takeUntil } from 'rxjs/operators';\nimport * as i1$1 from '@angular/cdk/observers';\nimport { ObserversModule } from '@angular/cdk/observers';\nimport { coerceElement } from '@angular/cdk/coercion';\nimport { BreakpointObserver } from '@angular/cdk/layout';\n\n/** IDs are delimited by an empty space, as per the spec. */\nconst ID_DELIMITER = ' ';\n/**\n * Adds the given ID to the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction addAriaReferencedId(el, attr, id) {\n const ids = getAriaReferenceIds(el, attr);\n id = id.trim();\n if (ids.some(existingId => existingId.trim() === id)) {\n return;\n }\n ids.push(id);\n el.setAttribute(attr, ids.join(ID_DELIMITER));\n}\n/**\n * Removes the given ID from the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction removeAriaReferencedId(el, attr, id) {\n const ids = getAriaReferenceIds(el, attr);\n id = id.trim();\n const filteredIds = ids.filter(val => val !== id);\n if (filteredIds.length) {\n el.setAttribute(attr, filteredIds.join(ID_DELIMITER));\n }\n else {\n el.removeAttribute(attr);\n }\n}\n/**\n * Gets the list of IDs referenced by the given ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction getAriaReferenceIds(el, attr) {\n // Get string array of all individual ids (whitespace delimited) in the attribute value\n const attrValue = el.getAttribute(attr);\n return attrValue?.match(/\\S+/g) ?? [];\n}\n\n/**\n * ID used for the body container where all messages are appended.\n * @deprecated No longer being used. To be removed.\n * @breaking-change 14.0.0\n */\nconst MESSAGES_CONTAINER_ID = 'cdk-describedby-message-container';\n/**\n * ID prefix used for each created message element.\n * @deprecated To be turned into a private variable.\n * @breaking-change 14.0.0\n */\nconst CDK_DESCRIBEDBY_ID_PREFIX = 'cdk-describedby-message';\n/**\n * Attribute given to each host element that is described by a message element.\n * @deprecated To be turned into a private variable.\n * @breaking-change 14.0.0\n */\nconst CDK_DESCRIBEDBY_HOST_ATTRIBUTE = 'cdk-describedby-host';\n/** Global incremental identifier for each registered message element. */\nlet nextId = 0;\n/**\n * Utility that creates visually hidden elements with a message content. Useful for elements that\n * want to use aria-describedby to further describe themselves without adding additional visual\n * content.\n */\nclass AriaDescriber {\n constructor(_document, \n /**\n * @deprecated To be turned into a required parameter.\n * @breaking-change 14.0.0\n */\n _platform) {\n this._platform = _platform;\n /** Map of all registered message elements that have been placed into the document. */\n this._messageRegistry = new Map();\n /** Container for all registered messages. */\n this._messagesContainer = null;\n /** Unique ID for the service. */\n this._id = `${nextId++}`;\n this._document = _document;\n this._id = inject(APP_ID) + '-' + nextId++;\n }\n describe(hostElement, message, role) {\n if (!this._canBeDescribed(hostElement, message)) {\n return;\n }\n const key = getKey(message, role);\n if (typeof message !== 'string') {\n // We need to ensure that the element has an ID.\n setMessageId(message, this._id);\n this._messageRegistry.set(key, { messageElement: message, referenceCount: 0 });\n }\n else if (!this._messageRegistry.has(key)) {\n this._createMessageElement(message, role);\n }\n if (!this._isElementDescribedByMessage(hostElement, key)) {\n this._addMessageReference(hostElement, key);\n }\n }\n removeDescription(hostElement, message, role) {\n if (!message || !this._isElementNode(hostElement)) {\n return;\n }\n const key = getKey(message, role);\n if (this._isElementDescribedByMessage(hostElement, key)) {\n this._removeMessageReference(hostElement, key);\n }\n // If the message is a string, it means that it's one that we created for the\n // consumer so we can remove it safely, otherwise we should leave it in place.\n if (typeof message === 'string') {\n const registeredMessage = this._messageRegistry.get(key);\n if (registeredMessage && registeredMessage.referenceCount === 0) {\n this._deleteMessageElement(key);\n }\n }\n if (this._messagesContainer?.childNodes.length === 0) {\n this._messagesContainer.remove();\n this._messagesContainer = null;\n }\n }\n /** Unregisters all created message elements and removes the message container. */\n ngOnDestroy() {\n const describedElements = this._document.querySelectorAll(`[${CDK_DESCRIBEDBY_HOST_ATTRIBUTE}=\"${this._id}\"]`);\n for (let i = 0; i < describedElements.length; i++) {\n this._removeCdkDescribedByReferenceIds(describedElements[i]);\n describedElements[i].removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n }\n this._messagesContainer?.remove();\n this._messagesContainer = null;\n this._messageRegistry.clear();\n }\n /**\n * Creates a new element in the visually hidden message container element with the message\n * as its content and adds it to the message registry.\n */\n _createMessageElement(message, role) {\n const messageElement = this._document.createElement('div');\n setMessageId(messageElement, this._id);\n messageElement.textContent = message;\n if (role) {\n messageElement.setAttribute('role', role);\n }\n this._createMessagesContainer();\n this._messagesContainer.appendChild(messageElement);\n this._messageRegistry.set(getKey(message, role), { messageElement, referenceCount: 0 });\n }\n /** Deletes the message element from the global messages container. */\n _deleteMessageElement(key) {\n this._messageRegistry.get(key)?.messageElement?.remove();\n this._messageRegistry.delete(key);\n }\n /** Creates the global container for all aria-describedby messages. */\n _createMessagesContainer() {\n if (this._messagesContainer) {\n return;\n }\n const containerClassName = 'cdk-describedby-message-container';\n const serverContainers = this._document.querySelectorAll(`.${containerClassName}[platform=\"server\"]`);\n for (let i = 0; i < serverContainers.length; i++) {\n // When going from the server to the client, we may end up in a situation where there's\n // already a container on the page, but we don't have a reference to it. Clear the\n // old container so we don't get duplicates. Doing this, instead of emptying the previous\n // container, should be slightly faster.\n serverContainers[i].remove();\n }\n const messagesContainer = this._document.createElement('div');\n // We add `visibility: hidden` in order to prevent text in this container from\n // being searchable by the browser's Ctrl + F functionality.\n // Screen-readers will still read the description for elements with aria-describedby even\n // when the description element is not visible.\n messagesContainer.style.visibility = 'hidden';\n // Even though we use `visibility: hidden`, we still apply `cdk-visually-hidden` so that\n // the description element doesn't impact page layout.\n messagesContainer.classList.add(containerClassName);\n messagesContainer.classList.add('cdk-visually-hidden');\n // @breaking-change 14.0.0 Remove null check for `_platform`.\n if (this._platform && !this._platform.isBrowser) {\n messagesContainer.setAttribute('platform', 'server');\n }\n this._document.body.appendChild(messagesContainer);\n this._messagesContainer = messagesContainer;\n }\n /** Removes all cdk-describedby messages that are hosted through the element. */\n _removeCdkDescribedByReferenceIds(element) {\n // Remove all aria-describedby reference IDs that are prefixed by CDK_DESCRIBEDBY_ID_PREFIX\n const originalReferenceIds = getAriaReferenceIds(element, 'aria-describedby').filter(id => id.indexOf(CDK_DESCRIBEDBY_ID_PREFIX) != 0);\n element.setAttribute('aria-describedby', originalReferenceIds.join(' '));\n }\n /**\n * Adds a message reference to the element using aria-describedby and increments the registered\n * message's reference count.\n */\n _addMessageReference(element, key) {\n const registeredMessage = this._messageRegistry.get(key);\n // Add the aria-describedby reference and set the\n // describedby_host attribute to mark the element.\n addAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n element.setAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE, this._id);\n registeredMessage.referenceCount++;\n }\n /**\n * Removes a message reference from the element using aria-describedby\n * and decrements the registered message's reference count.\n */\n _removeMessageReference(element, key) {\n const registeredMessage = this._messageRegistry.get(key);\n registeredMessage.referenceCount--;\n removeAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n element.removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n }\n /** Returns true if the element has been described by the provided message ID. */\n _isElementDescribedByMessage(element, key) {\n const referenceIds = getAriaReferenceIds(element, 'aria-describedby');\n const registeredMessage = this._messageRegistry.get(key);\n const messageId = registeredMessage && registeredMessage.messageElement.id;\n return !!messageId && referenceIds.indexOf(messageId) != -1;\n }\n /** Determines whether a message can be described on a particular element. */\n _canBeDescribed(element, message) {\n if (!this._isElementNode(element)) {\n return false;\n }\n if (message && typeof message === 'object') {\n // We'd have to make some assumptions about the description element's text, if the consumer\n // passed in an element. Assume that if an element is passed in, the consumer has verified\n // that it can be used as a description.\n return true;\n }\n const trimmedMessage = message == null ? '' : `${message}`.trim();\n const ariaLabel = element.getAttribute('aria-label');\n // We shouldn't set descriptions if they're exactly the same as the `aria-label` of the\n // element, because screen readers will end up reading out the same text twice in a row.\n return trimmedMessage ? !ariaLabel || ariaLabel.trim() !== trimmedMessage : false;\n }\n /** Checks whether a node is an Element node. */\n _isElementNode(element) {\n return element.nodeType === this._document.ELEMENT_NODE;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: AriaDescriber, deps: [{ token: DOCUMENT }, { token: i1.Platform }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: AriaDescriber, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: AriaDescriber, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }, { type: i1.Platform }] });\n/** Gets a key that can be used to look messages up in the registry. */\nfunction getKey(message, role) {\n return typeof message === 'string' ? `${role || ''}/${message}` : message;\n}\n/** Assigns a unique ID to an element, if it doesn't have one already. */\nfunction setMessageId(element, serviceId) {\n if (!element.id) {\n element.id = `${CDK_DESCRIBEDBY_ID_PREFIX}-${serviceId}-${nextId++}`;\n }\n}\n\n/**\n * This class manages keyboard events for selectable lists. If you pass it a query list\n * of items, it will set the active item correctly when arrow events occur.\n */\nclass ListKeyManager {\n constructor(_items, injector) {\n this._items = _items;\n this._activeItemIndex = -1;\n this._activeItem = null;\n this._wrap = false;\n this._letterKeyStream = new Subject();\n this._typeaheadSubscription = Subscription.EMPTY;\n this._vertical = true;\n this._allowedModifierKeys = [];\n this._homeAndEnd = false;\n this._pageUpAndDown = { enabled: false, delta: 10 };\n /**\n * Predicate function that can be used to check whether an item should be skipped\n * by the key manager. By default, disabled items are skipped.\n */\n this._skipPredicateFn = (item) => item.disabled;\n // Buffer for the letters that the user has pressed when the typeahead option is turned on.\n this._pressedLetters = [];\n /**\n * Stream that emits any time the TAB key is pressed, so components can react\n * when focus is shifted off of the list.\n */\n this.tabOut = new Subject();\n /** Stream that emits whenever the active item of the list manager changes. */\n this.change = new Subject();\n // We allow for the items to be an array because, in some cases, the consumer may\n // not have access to a QueryList of the items they want to manage (e.g. when the\n // items aren't being collected via `ViewChildren` or `ContentChildren`).\n if (_items instanceof QueryList) {\n this._itemChangesSubscription = _items.changes.subscribe((newItems) => this._itemsChanged(newItems.toArray()));\n }\n else if (isSignal(_items)) {\n if (!injector && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw new Error('ListKeyManager constructed with a signal must receive an injector');\n }\n this._effectRef = effect(() => this._itemsChanged(_items()), { injector });\n }\n }\n /**\n * Sets the predicate function that determines which items should be skipped by the\n * list key manager.\n * @param predicate Function that determines whether the given item should be skipped.\n */\n skipPredicate(predicate) {\n this._skipPredicateFn = predicate;\n return this;\n }\n /**\n * Configures wrapping mode, which determines whether the active item will wrap to\n * the other end of list when there are no more items in the given direction.\n * @param shouldWrap Whether the list should wrap when reaching the end.\n */\n withWrap(shouldWrap = true) {\n this._wrap = shouldWrap;\n return this;\n }\n /**\n * Configures whether the key manager should be able to move the selection vertically.\n * @param enabled Whether vertical selection should be enabled.\n */\n withVerticalOrientation(enabled = true) {\n this._vertical = enabled;\n return this;\n }\n /**\n * Configures the key manager to move the selection horizontally.\n * Passing in `null` will disable horizontal movement.\n * @param direction Direction in which the selection can be moved.\n */\n withHorizontalOrientation(direction) {\n this._horizontal = direction;\n return this;\n }\n /**\n * Modifier keys which are allowed to be held down and whose default actions will be prevented\n * as the user is pressing the arrow keys. Defaults to not allowing any modifier keys.\n */\n withAllowedModifierKeys(keys) {\n this._allowedModifierKeys = keys;\n return this;\n }\n /**\n * Turns on typeahead mode which allows users to set the active item by typing.\n * @param debounceInterval Time to wait after the last keystroke before setting the active item.\n */\n withTypeAhead(debounceInterval = 200) {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n const items = this._getItemsArray();\n if (items.length > 0 && items.some(item => typeof item.getLabel !== 'function')) {\n throw Error('ListKeyManager items in typeahead mode must implement the `getLabel` method.');\n }\n }\n this._typeaheadSubscription.unsubscribe();\n // Debounce the presses of non-navigational keys, collect the ones that correspond to letters\n // and convert those letters back into a string. Afterwards find the first item that starts\n // with that string and select it.\n this._typeaheadSubscription = this._letterKeyStream\n .pipe(tap(letter => this._pressedLetters.push(letter)), debounceTime(debounceInterval), filter(() => this._pressedLetters.length > 0), map(() => this._pressedLetters.join('')))\n .subscribe(inputString => {\n const items = this._getItemsArray();\n // Start at 1 because we want to start searching at the item immediately\n // following the current active item.\n for (let i = 1; i < items.length + 1; i++) {\n const index = (this._activeItemIndex + i) % items.length;\n const item = items[index];\n if (!this._skipPredicateFn(item) &&\n item.getLabel().toUpperCase().trim().indexOf(inputString) === 0) {\n this.setActiveItem(index);\n break;\n }\n }\n this._pressedLetters = [];\n });\n return this;\n }\n /** Cancels the current typeahead sequence. */\n cancelTypeahead() {\n this._pressedLetters = [];\n return this;\n }\n /**\n * Configures the key manager to activate the first and last items\n * respectively when the Home or End key is pressed.\n * @param enabled Whether pressing the Home or End key activates the first/last item.\n */\n withHomeAndEnd(enabled = true) {\n this._homeAndEnd = enabled;\n return this;\n }\n /**\n * Configures the key manager to activate every 10th, configured or first/last element in up/down direction\n * respectively when the Page-Up or Page-Down key is pressed.\n * @param enabled Whether pressing the Page-Up or Page-Down key activates the first/last item.\n * @param delta Whether pressing the Home or End key activates the first/last item.\n */\n withPageUpDown(enabled = true, delta = 10) {\n this._pageUpAndDown = { enabled, delta };\n return this;\n }\n setActiveItem(item) {\n const previousActiveItem = this._activeItem;\n this.updateActiveItem(item);\n if (this._activeItem !== previousActiveItem) {\n this.change.next(this._activeItemIndex);\n }\n }\n /**\n * Sets the active item depending on the key event passed in.\n * @param event Keyboard event to be used for determining which element should be active.\n */\n onKeydown(event) {\n const keyCode = event.keyCode;\n const modifiers = ['altKey', 'ctrlKey', 'metaKey', 'shiftKey'];\n const isModifierAllowed = modifiers.every(modifier => {\n return !event[modifier] || this._allowedModifierKeys.indexOf(modifier) > -1;\n });\n switch (keyCode) {\n case TAB:\n this.tabOut.next();\n return;\n case DOWN_ARROW:\n if (this._vertical && isModifierAllowed) {\n this.setNextItemActive();\n break;\n }\n else {\n return;\n }\n case UP_ARROW:\n if (this._vertical && isModifierAllowed) {\n this.setPreviousItemActive();\n break;\n }\n else {\n return;\n }\n case RIGHT_ARROW:\n if (this._horizontal && isModifierAllowed) {\n this._horizontal === 'rtl' ? this.setPreviousItemActive() : this.setNextItemActive();\n break;\n }\n else {\n return;\n }\n case LEFT_ARROW:\n if (this._horizontal && isModifierAllowed) {\n this._horizontal === 'rtl' ? this.setNextItemActive() : this.setPreviousItemActive();\n break;\n }\n else {\n return;\n }\n case HOME:\n if (this._homeAndEnd && isModifierAllowed) {\n this.setFirstItemActive();\n break;\n }\n else {\n return;\n }\n case END:\n if (this._homeAndEnd && isModifierAllowed) {\n this.setLastItemActive();\n break;\n }\n else {\n return;\n }\n case PAGE_UP:\n if (this._pageUpAndDown.enabled && isModifierAllowed) {\n const targetIndex = this._activeItemIndex - this._pageUpAndDown.delta;\n this._setActiveItemByIndex(targetIndex > 0 ? targetIndex : 0, 1);\n break;\n }\n else {\n return;\n }\n case PAGE_DOWN:\n if (this._pageUpAndDown.enabled && isModifierAllowed) {\n const targetIndex = this._activeItemIndex + this._pageUpAndDown.delta;\n const itemsLength = this._getItemsArray().length;\n this._setActiveItemByIndex(targetIndex < itemsLength ? targetIndex : itemsLength - 1, -1);\n break;\n }\n else {\n return;\n }\n default:\n if (isModifierAllowed || hasModifierKey(event, 'shiftKey')) {\n // Attempt to use the `event.key` which also maps it to the user's keyboard language,\n // otherwise fall back to resolving alphanumeric characters via the keyCode.\n if (event.key && event.key.length === 1) {\n this._letterKeyStream.next(event.key.toLocaleUpperCase());\n }\n else if ((keyCode >= A && keyCode <= Z) || (keyCode >= ZERO && keyCode <= NINE)) {\n this._letterKeyStream.next(String.fromCharCode(keyCode));\n }\n }\n // Note that we return here, in order to avoid preventing\n // the default action of non-navigational keys.\n return;\n }\n this._pressedLetters = [];\n event.preventDefault();\n }\n /** Index of the currently active item. */\n get activeItemIndex() {\n return this._activeItemIndex;\n }\n /** The active item. */\n get activeItem() {\n return this._activeItem;\n }\n /** Gets whether the user is currently typing into the manager using the typeahead feature. */\n isTyping() {\n return this._pressedLetters.length > 0;\n }\n /** Sets the active item to the first enabled item in the list. */\n setFirstItemActive() {\n this._setActiveItemByIndex(0, 1);\n }\n /** Sets the active item to the last enabled item in the list. */\n setLastItemActive() {\n this._setActiveItemByIndex(this._getItemsArray().length - 1, -1);\n }\n /** Sets the active item to the next enabled item in the list. */\n setNextItemActive() {\n this._activeItemIndex < 0 ? this.setFirstItemActive() : this._setActiveItemByDelta(1);\n }\n /** Sets the active item to a previous enabled item in the list. */\n setPreviousItemActive() {\n this._activeItemIndex < 0 && this._wrap\n ? this.setLastItemActive()\n : this._setActiveItemByDelta(-1);\n }\n updateActiveItem(item) {\n const itemArray = this._getItemsArray();\n const index = typeof item === 'number' ? item : itemArray.indexOf(item);\n const activeItem = itemArray[index];\n // Explicitly check for `null` and `undefined` because other falsy values are valid.\n this._activeItem = activeItem == null ? null : activeItem;\n this._activeItemIndex = index;\n }\n /** Cleans up the key manager. */\n destroy() {\n this._typeaheadSubscription.unsubscribe();\n this._itemChangesSubscription?.unsubscribe();\n this._effectRef?.destroy();\n this._letterKeyStream.complete();\n this.tabOut.complete();\n this.change.complete();\n this._pressedLetters = [];\n }\n /**\n * This method sets the active item, given a list of items and the delta between the\n * currently active item and the new active item. It will calculate differently\n * depending on whether wrap mode is turned on.\n */\n _setActiveItemByDelta(delta) {\n this._wrap ? this._setActiveInWrapMode(delta) : this._setActiveInDefaultMode(delta);\n }\n /**\n * Sets the active item properly given \"wrap\" mode. In other words, it will continue to move\n * down the list until it finds an item that is not disabled, and it will wrap if it\n * encounters either end of the list.\n */\n _setActiveInWrapMode(delta) {\n const items = this._getItemsArray();\n for (let i = 1; i <= items.length; i++) {\n const index = (this._activeItemIndex + delta * i + items.length) % items.length;\n const item = items[index];\n if (!this._skipPredicateFn(item)) {\n this.setActiveItem(index);\n return;\n }\n }\n }\n /**\n * Sets the active item properly given the default mode. In other words, it will\n * continue to move down the list until it finds an item that is not disabled. If\n * it encounters either end of the list, it will stop and not wrap.\n */\n _setActiveInDefaultMode(delta) {\n this._setActiveItemByIndex(this._activeItemIndex + delta, delta);\n }\n /**\n * Sets the active item to the first enabled item starting at the index specified. If the\n * item is disabled, it will move in the fallbackDelta direction until it either\n * finds an enabled item or encounters the end of the list.\n */\n _setActiveItemByIndex(index, fallbackDelta) {\n const items = this._getItemsArray();\n if (!items[index]) {\n return;\n }\n while (this._skipPredicateFn(items[index])) {\n index += fallbackDelta;\n if (!items[index]) {\n return;\n }\n }\n this.setActiveItem(index);\n }\n /** Returns the items as an array. */\n _getItemsArray() {\n if (isSignal(this._items)) {\n return this._items();\n }\n return this._items instanceof QueryList ? this._items.toArray() : this._items;\n }\n /** Callback for when the items have changed. */\n _itemsChanged(newItems) {\n if (this._activeItem) {\n const newIndex = newItems.indexOf(this._activeItem);\n if (newIndex > -1 && newIndex !== this._activeItemIndex) {\n this._activeItemIndex = newIndex;\n }\n }\n }\n}\n\nclass ActiveDescendantKeyManager extends ListKeyManager {\n setActiveItem(index) {\n if (this.activeItem) {\n this.activeItem.setInactiveStyles();\n }\n super.setActiveItem(index);\n if (this.activeItem) {\n this.activeItem.setActiveStyles();\n }\n }\n}\n\nclass FocusKeyManager extends ListKeyManager {\n constructor() {\n super(...arguments);\n this._origin = 'program';\n }\n /**\n * Sets the focus origin that will be passed in to the items for any subsequent `focus` calls.\n * @param origin Focus origin to be used when focusing items.\n */\n setFocusOrigin(origin) {\n this._origin = origin;\n return this;\n }\n setActiveItem(item) {\n super.setActiveItem(item);\n if (this.activeItem) {\n this.activeItem.focus(this._origin);\n }\n }\n}\n\n/**\n * Configuration for the isFocusable method.\n */\nclass IsFocusableConfig {\n constructor() {\n /**\n * Whether to count an element as focusable even if it is not currently visible.\n */\n this.ignoreVisibility = false;\n }\n}\n// The InteractivityChecker leans heavily on the ally.js accessibility utilities.\n// Methods like `isTabbable` are only covering specific edge-cases for the browsers which are\n// supported.\n/**\n * Utility for checking the interactivity of an element, such as whether it is focusable or\n * tabbable.\n */\nclass InteractivityChecker {\n constructor(_platform) {\n this._platform = _platform;\n }\n /**\n * Gets whether an element is disabled.\n *\n * @param element Element to be checked.\n * @returns Whether the element is disabled.\n */\n isDisabled(element) {\n // This does not capture some cases, such as a non-form control with a disabled attribute or\n // a form control inside of a disabled form, but should capture the most common cases.\n return element.hasAttribute('disabled');\n }\n /**\n * Gets whether an element is visible for the purposes of interactivity.\n *\n * This will capture states like `display: none` and `visibility: hidden`, but not things like\n * being clipped by an `overflow: hidden` parent or being outside the viewport.\n *\n * @returns Whether the element is visible.\n */\n isVisible(element) {\n return hasGeometry(element) && getComputedStyle(element).visibility === 'visible';\n }\n /**\n * Gets whether an element can be reached via Tab key.\n * Assumes that the element has already been checked with isFocusable.\n *\n * @param element Element to be checked.\n * @returns Whether the element is tabbable.\n */\n isTabbable(element) {\n // Nothing is tabbable on the server 😎\n if (!this._platform.isBrowser) {\n return false;\n }\n const frameElement = getFrameElement(getWindow(element));\n if (frameElement) {\n // Frame elements inherit their tabindex onto all child elements.\n if (getTabIndexValue(frameElement) === -1) {\n return false;\n }\n // Browsers disable tabbing to an element inside of an invisible frame.\n if (!this.isVisible(frameElement)) {\n return false;\n }\n }\n let nodeName = element.nodeName.toLowerCase();\n let tabIndexValue = getTabIndexValue(element);\n if (element.hasAttribute('contenteditable')) {\n return tabIndexValue !== -1;\n }\n if (nodeName === 'iframe' || nodeName === 'object') {\n // The frame or object's content may be tabbable depending on the content, but it's\n // not possibly to reliably detect the content of the frames. We always consider such\n // elements as non-tabbable.\n return false;\n }\n // In iOS, the browser only considers some specific elements as tabbable.\n if (this._platform.WEBKIT && this._platform.IOS && !isPotentiallyTabbableIOS(element)) {\n return false;\n }\n if (nodeName === 'audio') {\n // Audio elements without controls enabled are never tabbable, regardless\n // of the tabindex attribute explicitly being set.\n if (!element.hasAttribute('controls')) {\n return false;\n }\n // Audio elements with controls are by default tabbable unless the\n // tabindex attribute is set to `-1` explicitly.\n return tabIndexValue !== -1;\n }\n if (nodeName === 'video') {\n // For all video elements, if the tabindex attribute is set to `-1`, the video\n // is not tabbable. Note: We cannot rely on the default `HTMLElement.tabIndex`\n // property as that one is set to `-1` in Chrome, Edge and Safari v13.1. The\n // tabindex attribute is the source of truth here.\n if (tabIndexValue === -1) {\n return false;\n }\n // If the tabindex is explicitly set, and not `-1` (as per check before), the\n // video element is always tabbable (regardless of whether it has controls or not).\n if (tabIndexValue !== null) {\n return true;\n }\n // Otherwise (when no explicit tabindex is set), a video is only tabbable if it\n // has controls enabled. Firefox is special as videos are always tabbable regardless\n // of whether there are controls or not.\n return this._platform.FIREFOX || element.hasAttribute('controls');\n }\n return element.tabIndex >= 0;\n }\n /**\n * Gets whether an element can be focused by the user.\n *\n * @param element Element to be checked.\n * @param config The config object with options to customize this method's behavior\n * @returns Whether the element is focusable.\n */\n isFocusable(element, config) {\n // Perform checks in order of left to most expensive.\n // Again, naive approach that does not capture many edge cases and browser quirks.\n return (isPotentiallyFocusable(element) &&\n !this.isDisabled(element) &&\n (config?.ignoreVisibility || this.isVisible(element)));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InteractivityChecker, deps: [{ token: i1.Platform }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InteractivityChecker, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InteractivityChecker, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i1.Platform }] });\n/**\n * Returns the frame element from a window object. Since browsers like MS Edge throw errors if\n * the frameElement property is being accessed from a different host address, this property\n * should be accessed carefully.\n */\nfunction getFrameElement(window) {\n try {\n return window.frameElement;\n }\n catch {\n return null;\n }\n}\n/** Checks whether the specified element has any geometry / rectangles. */\nfunction hasGeometry(element) {\n // Use logic from jQuery to check for an invisible element.\n // See https://github.com/jquery/jquery/blob/master/src/css/hiddenVisibleSelectors.js#L12\n return !!(element.offsetWidth ||\n element.offsetHeight ||\n (typeof element.getClientRects === 'function' && element.getClientRects().length));\n}\n/** Gets whether an element's */\nfunction isNativeFormElement(element) {\n let nodeName = element.nodeName.toLowerCase();\n return (nodeName === 'input' ||\n nodeName === 'select' ||\n nodeName === 'button' ||\n nodeName === 'textarea');\n}\n/** Gets whether an element is an ``. */\nfunction isHiddenInput(element) {\n return isInputElement(element) && element.type == 'hidden';\n}\n/** Gets whether an element is an anchor that has an href attribute. */\nfunction isAnchorWithHref(element) {\n return isAnchorElement(element) && element.hasAttribute('href');\n}\n/** Gets whether an element is an input element. */\nfunction isInputElement(element) {\n return element.nodeName.toLowerCase() == 'input';\n}\n/** Gets whether an element is an anchor element. */\nfunction isAnchorElement(element) {\n return element.nodeName.toLowerCase() == 'a';\n}\n/** Gets whether an element has a valid tabindex. */\nfunction hasValidTabIndex(element) {\n if (!element.hasAttribute('tabindex') || element.tabIndex === undefined) {\n return false;\n }\n let tabIndex = element.getAttribute('tabindex');\n return !!(tabIndex && !isNaN(parseInt(tabIndex, 10)));\n}\n/**\n * Returns the parsed tabindex from the element attributes instead of returning the\n * evaluated tabindex from the browsers defaults.\n */\nfunction getTabIndexValue(element) {\n if (!hasValidTabIndex(element)) {\n return null;\n }\n // See browser issue in Gecko https://bugzilla.mozilla.org/show_bug.cgi?id=1128054\n const tabIndex = parseInt(element.getAttribute('tabindex') || '', 10);\n return isNaN(tabIndex) ? -1 : tabIndex;\n}\n/** Checks whether the specified element is potentially tabbable on iOS */\nfunction isPotentiallyTabbableIOS(element) {\n let nodeName = element.nodeName.toLowerCase();\n let inputType = nodeName === 'input' && element.type;\n return (inputType === 'text' ||\n inputType === 'password' ||\n nodeName === 'select' ||\n nodeName === 'textarea');\n}\n/**\n * Gets whether an element is potentially focusable without taking current visible/disabled state\n * into account.\n */\nfunction isPotentiallyFocusable(element) {\n // Inputs are potentially focusable *unless* they're type=\"hidden\".\n if (isHiddenInput(element)) {\n return false;\n }\n return (isNativeFormElement(element) ||\n isAnchorWithHref(element) ||\n element.hasAttribute('contenteditable') ||\n hasValidTabIndex(element));\n}\n/** Gets the parent window of a DOM node with regards of being inside of an iframe. */\nfunction getWindow(node) {\n // ownerDocument is null if `node` itself *is* a document.\n return (node.ownerDocument && node.ownerDocument.defaultView) || window;\n}\n\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class currently uses a relatively simple approach to focus trapping.\n * It assumes that the tab order is the same as DOM order, which is not necessarily true.\n * Things like `tabIndex > 0`, flex `order`, and shadow roots can cause the two to be misaligned.\n */\nclass FocusTrap {\n /** Whether the focus trap is active. */\n get enabled() {\n return this._enabled;\n }\n set enabled(value) {\n this._enabled = value;\n if (this._startAnchor && this._endAnchor) {\n this._toggleAnchorTabIndex(value, this._startAnchor);\n this._toggleAnchorTabIndex(value, this._endAnchor);\n }\n }\n constructor(_element, _checker, _ngZone, _document, deferAnchors = false) {\n this._element = _element;\n this._checker = _checker;\n this._ngZone = _ngZone;\n this._document = _document;\n this._hasAttached = false;\n // Event listeners for the anchors. Need to be regular functions so that we can unbind them later.\n this.startAnchorListener = () => this.focusLastTabbableElement();\n this.endAnchorListener = () => this.focusFirstTabbableElement();\n this._enabled = true;\n if (!deferAnchors) {\n this.attachAnchors();\n }\n }\n /** Destroys the focus trap by cleaning up the anchors. */\n destroy() {\n const startAnchor = this._startAnchor;\n const endAnchor = this._endAnchor;\n if (startAnchor) {\n startAnchor.removeEventListener('focus', this.startAnchorListener);\n startAnchor.remove();\n }\n if (endAnchor) {\n endAnchor.removeEventListener('focus', this.endAnchorListener);\n endAnchor.remove();\n }\n this._startAnchor = this._endAnchor = null;\n this._hasAttached = false;\n }\n /**\n * Inserts the anchors into the DOM. This is usually done automatically\n * in the constructor, but can be deferred for cases like directives with `*ngIf`.\n * @returns Whether the focus trap managed to attach successfully. This may not be the case\n * if the target element isn't currently in the DOM.\n */\n attachAnchors() {\n // If we're not on the browser, there can be no focus to trap.\n if (this._hasAttached) {\n return true;\n }\n this._ngZone.runOutsideAngular(() => {\n if (!this._startAnchor) {\n this._startAnchor = this._createAnchor();\n this._startAnchor.addEventListener('focus', this.startAnchorListener);\n }\n if (!this._endAnchor) {\n this._endAnchor = this._createAnchor();\n this._endAnchor.addEventListener('focus', this.endAnchorListener);\n }\n });\n if (this._element.parentNode) {\n this._element.parentNode.insertBefore(this._startAnchor, this._element);\n this._element.parentNode.insertBefore(this._endAnchor, this._element.nextSibling);\n this._hasAttached = true;\n }\n return this._hasAttached;\n }\n /**\n * Waits for the zone to stabilize, then focuses the first tabbable element.\n * @returns Returns a promise that resolves with a boolean, depending\n * on whether focus was moved successfully.\n */\n focusInitialElementWhenReady(options) {\n return new Promise(resolve => {\n this._executeOnStable(() => resolve(this.focusInitialElement(options)));\n });\n }\n /**\n * Waits for the zone to stabilize, then focuses\n * the first tabbable element within the focus trap region.\n * @returns Returns a promise that resolves with a boolean, depending\n * on whether focus was moved successfully.\n */\n focusFirstTabbableElementWhenReady(options) {\n return new Promise(resolve => {\n this._executeOnStable(() => resolve(this.focusFirstTabbableElement(options)));\n });\n }\n /**\n * Waits for the zone to stabilize, then focuses\n * the last tabbable element within the focus trap region.\n * @returns Returns a promise that resolves with a boolean, depending\n * on whether focus was moved successfully.\n */\n focusLastTabbableElementWhenReady(options) {\n return new Promise(resolve => {\n this._executeOnStable(() => resolve(this.focusLastTabbableElement(options)));\n });\n }\n /**\n * Get the specified boundary element of the trapped region.\n * @param bound The boundary to get (start or end of trapped region).\n * @returns The boundary element.\n */\n _getRegionBoundary(bound) {\n // Contains the deprecated version of selector, for temporary backwards comparability.\n const markers = this._element.querySelectorAll(`[cdk-focus-region-${bound}], ` + `[cdkFocusRegion${bound}], ` + `[cdk-focus-${bound}]`);\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n for (let i = 0; i < markers.length; i++) {\n // @breaking-change 8.0.0\n if (markers[i].hasAttribute(`cdk-focus-${bound}`)) {\n console.warn(`Found use of deprecated attribute 'cdk-focus-${bound}', ` +\n `use 'cdkFocusRegion${bound}' instead. The deprecated ` +\n `attribute will be removed in 8.0.0.`, markers[i]);\n }\n else if (markers[i].hasAttribute(`cdk-focus-region-${bound}`)) {\n console.warn(`Found use of deprecated attribute 'cdk-focus-region-${bound}', ` +\n `use 'cdkFocusRegion${bound}' instead. The deprecated attribute ` +\n `will be removed in 8.0.0.`, markers[i]);\n }\n }\n }\n if (bound == 'start') {\n return markers.length ? markers[0] : this._getFirstTabbableElement(this._element);\n }\n return markers.length\n ? markers[markers.length - 1]\n : this._getLastTabbableElement(this._element);\n }\n /**\n * Focuses the element that should be focused when the focus trap is initialized.\n * @returns Whether focus was moved successfully.\n */\n focusInitialElement(options) {\n // Contains the deprecated version of selector, for temporary backwards comparability.\n const redirectToElement = this._element.querySelector(`[cdk-focus-initial], ` + `[cdkFocusInitial]`);\n if (redirectToElement) {\n // @breaking-change 8.0.0\n if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n redirectToElement.hasAttribute(`cdk-focus-initial`)) {\n console.warn(`Found use of deprecated attribute 'cdk-focus-initial', ` +\n `use 'cdkFocusInitial' instead. The deprecated attribute ` +\n `will be removed in 8.0.0`, redirectToElement);\n }\n // Warn the consumer if the element they've pointed to\n // isn't focusable, when not in production mode.\n if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n !this._checker.isFocusable(redirectToElement)) {\n console.warn(`Element matching '[cdkFocusInitial]' is not focusable.`, redirectToElement);\n }\n if (!this._checker.isFocusable(redirectToElement)) {\n const focusableChild = this._getFirstTabbableElement(redirectToElement);\n focusableChild?.focus(options);\n return !!focusableChild;\n }\n redirectToElement.focus(options);\n return true;\n }\n return this.focusFirstTabbableElement(options);\n }\n /**\n * Focuses the first tabbable element within the focus trap region.\n * @returns Whether focus was moved successfully.\n */\n focusFirstTabbableElement(options) {\n const redirectToElement = this._getRegionBoundary('start');\n if (redirectToElement) {\n redirectToElement.focus(options);\n }\n return !!redirectToElement;\n }\n /**\n * Focuses the last tabbable element within the focus trap region.\n * @returns Whether focus was moved successfully.\n */\n focusLastTabbableElement(options) {\n const redirectToElement = this._getRegionBoundary('end');\n if (redirectToElement) {\n redirectToElement.focus(options);\n }\n return !!redirectToElement;\n }\n /**\n * Checks whether the focus trap has successfully been attached.\n */\n hasAttached() {\n return this._hasAttached;\n }\n /** Get the first tabbable element from a DOM subtree (inclusive). */\n _getFirstTabbableElement(root) {\n if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n return root;\n }\n const children = root.children;\n for (let i = 0; i < children.length; i++) {\n const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE\n ? this._getFirstTabbableElement(children[i])\n : null;\n if (tabbableChild) {\n return tabbableChild;\n }\n }\n return null;\n }\n /** Get the last tabbable element from a DOM subtree (inclusive). */\n _getLastTabbableElement(root) {\n if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n return root;\n }\n // Iterate in reverse DOM order.\n const children = root.children;\n for (let i = children.length - 1; i >= 0; i--) {\n const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE\n ? this._getLastTabbableElement(children[i])\n : null;\n if (tabbableChild) {\n return tabbableChild;\n }\n }\n return null;\n }\n /** Creates an anchor element. */\n _createAnchor() {\n const anchor = this._document.createElement('div');\n this._toggleAnchorTabIndex(this._enabled, anchor);\n anchor.classList.add('cdk-visually-hidden');\n anchor.classList.add('cdk-focus-trap-anchor');\n anchor.setAttribute('aria-hidden', 'true');\n return anchor;\n }\n /**\n * Toggles the `tabindex` of an anchor, based on the enabled state of the focus trap.\n * @param isEnabled Whether the focus trap is enabled.\n * @param anchor Anchor on which to toggle the tabindex.\n */\n _toggleAnchorTabIndex(isEnabled, anchor) {\n // Remove the tabindex completely, rather than setting it to -1, because if the\n // element has a tabindex, the user might still hit it when navigating with the arrow keys.\n isEnabled ? anchor.setAttribute('tabindex', '0') : anchor.removeAttribute('tabindex');\n }\n /**\n * Toggles the`tabindex` of both anchors to either trap Tab focus or allow it to escape.\n * @param enabled: Whether the anchors should trap Tab.\n */\n toggleAnchors(enabled) {\n if (this._startAnchor && this._endAnchor) {\n this._toggleAnchorTabIndex(enabled, this._startAnchor);\n this._toggleAnchorTabIndex(enabled, this._endAnchor);\n }\n }\n /** Executes a function when the zone is stable. */\n _executeOnStable(fn) {\n if (this._ngZone.isStable) {\n fn();\n }\n else {\n this._ngZone.onStable.pipe(take(1)).subscribe(fn);\n }\n }\n}\n/**\n * Factory that allows easy instantiation of focus traps.\n */\nclass FocusTrapFactory {\n constructor(_checker, _ngZone, _document) {\n this._checker = _checker;\n this._ngZone = _ngZone;\n this._document = _document;\n }\n /**\n * Creates a focus-trapped region around the given element.\n * @param element The element around which focus will be trapped.\n * @param deferCaptureElements Defers the creation of focus-capturing elements to be done\n * manually by the user.\n * @returns The created focus trap instance.\n */\n create(element, deferCaptureElements = false) {\n return new FocusTrap(element, this._checker, this._ngZone, this._document, deferCaptureElements);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapFactory, deps: [{ token: InteractivityChecker }, { token: i0.NgZone }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapFactory, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapFactory, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: InteractivityChecker }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }] });\n/** Directive for trapping focus within a region. */\nclass CdkTrapFocus {\n /** Whether the focus trap is active. */\n get enabled() {\n return this.focusTrap?.enabled || false;\n }\n set enabled(value) {\n if (this.focusTrap) {\n this.focusTrap.enabled = value;\n }\n }\n constructor(_elementRef, _focusTrapFactory, \n /**\n * @deprecated No longer being used. To be removed.\n * @breaking-change 13.0.0\n */\n _document) {\n this._elementRef = _elementRef;\n this._focusTrapFactory = _focusTrapFactory;\n /** Previously focused element to restore focus to upon destroy when using autoCapture. */\n this._previouslyFocusedElement = null;\n const platform = inject(Platform);\n if (platform.isBrowser) {\n this.focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement, true);\n }\n }\n ngOnDestroy() {\n this.focusTrap?.destroy();\n // If we stored a previously focused element when using autoCapture, return focus to that\n // element now that the trapped region is being destroyed.\n if (this._previouslyFocusedElement) {\n this._previouslyFocusedElement.focus();\n this._previouslyFocusedElement = null;\n }\n }\n ngAfterContentInit() {\n this.focusTrap?.attachAnchors();\n if (this.autoCapture) {\n this._captureFocus();\n }\n }\n ngDoCheck() {\n if (this.focusTrap && !this.focusTrap.hasAttached()) {\n this.focusTrap.attachAnchors();\n }\n }\n ngOnChanges(changes) {\n const autoCaptureChange = changes['autoCapture'];\n if (autoCaptureChange &&\n !autoCaptureChange.firstChange &&\n this.autoCapture &&\n this.focusTrap?.hasAttached()) {\n this._captureFocus();\n }\n }\n _captureFocus() {\n this._previouslyFocusedElement = _getFocusedElementPierceShadowDom();\n this.focusTrap?.focusInitialElementWhenReady();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkTrapFocus, deps: [{ token: i0.ElementRef }, { token: FocusTrapFactory }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"16.1.0\", version: \"17.2.0\", type: CdkTrapFocus, isStandalone: true, selector: \"[cdkTrapFocus]\", inputs: { enabled: [\"cdkTrapFocus\", \"enabled\", booleanAttribute], autoCapture: [\"cdkTrapFocusAutoCapture\", \"autoCapture\", booleanAttribute] }, exportAs: [\"cdkTrapFocus\"], usesOnChanges: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkTrapFocus, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkTrapFocus]',\n exportAs: 'cdkTrapFocus',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ElementRef }, { type: FocusTrapFactory }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }], propDecorators: { enabled: [{\n type: Input,\n args: [{ alias: 'cdkTrapFocus', transform: booleanAttribute }]\n }], autoCapture: [{\n type: Input,\n args: [{ alias: 'cdkTrapFocusAutoCapture', transform: booleanAttribute }]\n }] } });\n\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class uses a strategy pattern that determines how it traps focus.\n * See FocusTrapInertStrategy.\n */\nclass ConfigurableFocusTrap extends FocusTrap {\n /** Whether the FocusTrap is enabled. */\n get enabled() {\n return this._enabled;\n }\n set enabled(value) {\n this._enabled = value;\n if (this._enabled) {\n this._focusTrapManager.register(this);\n }\n else {\n this._focusTrapManager.deregister(this);\n }\n }\n constructor(_element, _checker, _ngZone, _document, _focusTrapManager, _inertStrategy, config) {\n super(_element, _checker, _ngZone, _document, config.defer);\n this._focusTrapManager = _focusTrapManager;\n this._inertStrategy = _inertStrategy;\n this._focusTrapManager.register(this);\n }\n /** Notifies the FocusTrapManager that this FocusTrap will be destroyed. */\n destroy() {\n this._focusTrapManager.deregister(this);\n super.destroy();\n }\n /** @docs-private Implemented as part of ManagedFocusTrap. */\n _enable() {\n this._inertStrategy.preventFocus(this);\n this.toggleAnchors(true);\n }\n /** @docs-private Implemented as part of ManagedFocusTrap. */\n _disable() {\n this._inertStrategy.allowFocus(this);\n this.toggleAnchors(false);\n }\n}\n\n/** The injection token used to specify the inert strategy. */\nconst FOCUS_TRAP_INERT_STRATEGY = new InjectionToken('FOCUS_TRAP_INERT_STRATEGY');\n\n/**\n * Lightweight FocusTrapInertStrategy that adds a document focus event\n * listener to redirect focus back inside the FocusTrap.\n */\nclass EventListenerFocusTrapInertStrategy {\n constructor() {\n /** Focus event handler. */\n this._listener = null;\n }\n /** Adds a document event listener that keeps focus inside the FocusTrap. */\n preventFocus(focusTrap) {\n // Ensure there's only one listener per document\n if (this._listener) {\n focusTrap._document.removeEventListener('focus', this._listener, true);\n }\n this._listener = (e) => this._trapFocus(focusTrap, e);\n focusTrap._ngZone.runOutsideAngular(() => {\n focusTrap._document.addEventListener('focus', this._listener, true);\n });\n }\n /** Removes the event listener added in preventFocus. */\n allowFocus(focusTrap) {\n if (!this._listener) {\n return;\n }\n focusTrap._document.removeEventListener('focus', this._listener, true);\n this._listener = null;\n }\n /**\n * Refocuses the first element in the FocusTrap if the focus event target was outside\n * the FocusTrap.\n *\n * This is an event listener callback. The event listener is added in runOutsideAngular,\n * so all this code runs outside Angular as well.\n */\n _trapFocus(focusTrap, event) {\n const target = event.target;\n const focusTrapRoot = focusTrap._element;\n // Don't refocus if target was in an overlay, because the overlay might be associated\n // with an element inside the FocusTrap, ex. mat-select.\n if (target && !focusTrapRoot.contains(target) && !target.closest?.('div.cdk-overlay-pane')) {\n // Some legacy FocusTrap usages have logic that focuses some element on the page\n // just before FocusTrap is destroyed. For backwards compatibility, wait\n // to be sure FocusTrap is still enabled before refocusing.\n setTimeout(() => {\n // Check whether focus wasn't put back into the focus trap while the timeout was pending.\n if (focusTrap.enabled && !focusTrapRoot.contains(focusTrap._document.activeElement)) {\n focusTrap.focusFirstTabbableElement();\n }\n });\n }\n }\n}\n\n/** Injectable that ensures only the most recently enabled FocusTrap is active. */\nclass FocusTrapManager {\n constructor() {\n // A stack of the FocusTraps on the page. Only the FocusTrap at the\n // top of the stack is active.\n this._focusTrapStack = [];\n }\n /**\n * Disables the FocusTrap at the top of the stack, and then pushes\n * the new FocusTrap onto the stack.\n */\n register(focusTrap) {\n // Dedupe focusTraps that register multiple times.\n this._focusTrapStack = this._focusTrapStack.filter(ft => ft !== focusTrap);\n let stack = this._focusTrapStack;\n if (stack.length) {\n stack[stack.length - 1]._disable();\n }\n stack.push(focusTrap);\n focusTrap._enable();\n }\n /**\n * Removes the FocusTrap from the stack, and activates the\n * FocusTrap that is the new top of the stack.\n */\n deregister(focusTrap) {\n focusTrap._disable();\n const stack = this._focusTrapStack;\n const i = stack.indexOf(focusTrap);\n if (i !== -1) {\n stack.splice(i, 1);\n if (stack.length) {\n stack[stack.length - 1]._enable();\n }\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapManager, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapManager, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusTrapManager, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }] });\n\n/** Factory that allows easy instantiation of configurable focus traps. */\nclass ConfigurableFocusTrapFactory {\n constructor(_checker, _ngZone, _focusTrapManager, _document, _inertStrategy) {\n this._checker = _checker;\n this._ngZone = _ngZone;\n this._focusTrapManager = _focusTrapManager;\n this._document = _document;\n // TODO split up the strategies into different modules, similar to DateAdapter.\n this._inertStrategy = _inertStrategy || new EventListenerFocusTrapInertStrategy();\n }\n create(element, config = { defer: false }) {\n let configObject;\n if (typeof config === 'boolean') {\n configObject = { defer: config };\n }\n else {\n configObject = config;\n }\n return new ConfigurableFocusTrap(element, this._checker, this._ngZone, this._document, this._focusTrapManager, this._inertStrategy, configObject);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, deps: [{ token: InteractivityChecker }, { token: i0.NgZone }, { token: FocusTrapManager }, { token: DOCUMENT }, { token: FOCUS_TRAP_INERT_STRATEGY, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: InteractivityChecker }, { type: i0.NgZone }, { type: FocusTrapManager }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [FOCUS_TRAP_INERT_STRATEGY]\n }] }] });\n\n/** Gets whether an event could be a faked `mousedown` event dispatched by a screen reader. */\nfunction isFakeMousedownFromScreenReader(event) {\n // Some screen readers will dispatch a fake `mousedown` event when pressing enter or space on\n // a clickable element. We can distinguish these events when `event.buttons` is zero, or\n // `event.detail` is zero depending on the browser:\n // - `event.buttons` works on Firefox, but fails on Chrome.\n // - `detail` works on Chrome, but fails on Firefox.\n return event.buttons === 0 || event.detail === 0;\n}\n/** Gets whether an event could be a faked `touchstart` event dispatched by a screen reader. */\nfunction isFakeTouchstartFromScreenReader(event) {\n const touch = (event.touches && event.touches[0]) || (event.changedTouches && event.changedTouches[0]);\n // A fake `touchstart` can be distinguished from a real one by looking at the `identifier`\n // which is typically >= 0 on a real device versus -1 from a screen reader. Just to be safe,\n // we can also look at `radiusX` and `radiusY`. This behavior was observed against a Windows 10\n // device with a touch screen running NVDA v2020.4 and Firefox 85 or Chrome 88.\n return (!!touch &&\n touch.identifier === -1 &&\n (touch.radiusX == null || touch.radiusX === 1) &&\n (touch.radiusY == null || touch.radiusY === 1));\n}\n\n/**\n * Injectable options for the InputModalityDetector. These are shallowly merged with the default\n * options.\n */\nconst INPUT_MODALITY_DETECTOR_OPTIONS = new InjectionToken('cdk-input-modality-detector-options');\n/**\n * Default options for the InputModalityDetector.\n *\n * Modifier keys are ignored by default (i.e. when pressed won't cause the service to detect\n * keyboard input modality) for two reasons:\n *\n * 1. Modifier keys are commonly used with mouse to perform actions such as 'right click' or 'open\n * in new tab', and are thus less representative of actual keyboard interaction.\n * 2. VoiceOver triggers some keyboard events when linearly navigating with Control + Option (but\n * confusingly not with Caps Lock). Thus, to have parity with other screen readers, we ignore\n * these keys so as to not update the input modality.\n *\n * Note that we do not by default ignore the right Meta key on Safari because it has the same key\n * code as the ContextMenu key on other browsers. When we switch to using event.key, we can\n * distinguish between the two.\n */\nconst INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS = {\n ignoreKeys: [ALT, CONTROL, MAC_META, META, SHIFT],\n};\n/**\n * The amount of time needed to pass after a touchstart event in order for a subsequent mousedown\n * event to be attributed as mouse and not touch.\n *\n * This is the value used by AngularJS Material. Through trial and error (on iPhone 6S) they found\n * that a value of around 650ms seems appropriate.\n */\nconst TOUCH_BUFFER_MS = 650;\n/**\n * Event listener options that enable capturing and also mark the listener as passive if the browser\n * supports it.\n */\nconst modalityEventListenerOptions = normalizePassiveListenerOptions({\n passive: true,\n capture: true,\n});\n/**\n * Service that detects the user's input modality.\n *\n * This service does not update the input modality when a user navigates with a screen reader\n * (e.g. linear navigation with VoiceOver, object navigation / browse mode with NVDA, virtual PC\n * cursor mode with JAWS). This is in part due to technical limitations (i.e. keyboard events do not\n * fire as expected in these modes) but is also arguably the correct behavior. Navigating with a\n * screen reader is akin to visually scanning a page, and should not be interpreted as actual user\n * input interaction.\n *\n * When a user is not navigating but *interacting* with a screen reader, this service attempts to\n * update the input modality to keyboard, but in general this service's behavior is largely\n * undefined.\n */\nclass InputModalityDetector {\n /** The most recently detected input modality. */\n get mostRecentModality() {\n return this._modality.value;\n }\n constructor(_platform, ngZone, document, options) {\n this._platform = _platform;\n /**\n * The most recently detected input modality event target. Is null if no input modality has been\n * detected or if the associated event target is null for some unknown reason.\n */\n this._mostRecentTarget = null;\n /** The underlying BehaviorSubject that emits whenever an input modality is detected. */\n this._modality = new BehaviorSubject(null);\n /**\n * The timestamp of the last touch input modality. Used to determine whether mousedown events\n * should be attributed to mouse or touch.\n */\n this._lastTouchMs = 0;\n /**\n * Handles keydown events. Must be an arrow function in order to preserve the context when it gets\n * bound.\n */\n this._onKeydown = (event) => {\n // If this is one of the keys we should ignore, then ignore it and don't update the input\n // modality to keyboard.\n if (this._options?.ignoreKeys?.some(keyCode => keyCode === event.keyCode)) {\n return;\n }\n this._modality.next('keyboard');\n this._mostRecentTarget = _getEventTarget(event);\n };\n /**\n * Handles mousedown events. Must be an arrow function in order to preserve the context when it\n * gets bound.\n */\n this._onMousedown = (event) => {\n // Touches trigger both touch and mouse events, so we need to distinguish between mouse events\n // that were triggered via mouse vs touch. To do so, check if the mouse event occurs closely\n // after the previous touch event.\n if (Date.now() - this._lastTouchMs < TOUCH_BUFFER_MS) {\n return;\n }\n // Fake mousedown events are fired by some screen readers when controls are activated by the\n // screen reader. Attribute them to keyboard input modality.\n this._modality.next(isFakeMousedownFromScreenReader(event) ? 'keyboard' : 'mouse');\n this._mostRecentTarget = _getEventTarget(event);\n };\n /**\n * Handles touchstart events. Must be an arrow function in order to preserve the context when it\n * gets bound.\n */\n this._onTouchstart = (event) => {\n // Same scenario as mentioned in _onMousedown, but on touch screen devices, fake touchstart\n // events are fired. Again, attribute to keyboard input modality.\n if (isFakeTouchstartFromScreenReader(event)) {\n this._modality.next('keyboard');\n return;\n }\n // Store the timestamp of this touch event, as it's used to distinguish between mouse events\n // triggered via mouse vs touch.\n this._lastTouchMs = Date.now();\n this._modality.next('touch');\n this._mostRecentTarget = _getEventTarget(event);\n };\n this._options = {\n ...INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS,\n ...options,\n };\n // Skip the first emission as it's null.\n this.modalityDetected = this._modality.pipe(skip(1));\n this.modalityChanged = this.modalityDetected.pipe(distinctUntilChanged());\n // If we're not in a browser, this service should do nothing, as there's no relevant input\n // modality to detect.\n if (_platform.isBrowser) {\n ngZone.runOutsideAngular(() => {\n document.addEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n document.addEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n document.addEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n });\n }\n }\n ngOnDestroy() {\n this._modality.complete();\n if (this._platform.isBrowser) {\n document.removeEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n document.removeEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n document.removeEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InputModalityDetector, deps: [{ token: i1.Platform }, { token: i0.NgZone }, { token: DOCUMENT }, { token: INPUT_MODALITY_DETECTOR_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InputModalityDetector, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: InputModalityDetector, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i1.Platform }, { type: i0.NgZone }, { type: Document, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [INPUT_MODALITY_DETECTOR_OPTIONS]\n }] }] });\n\nconst LIVE_ANNOUNCER_ELEMENT_TOKEN = new InjectionToken('liveAnnouncerElement', {\n providedIn: 'root',\n factory: LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY,\n});\n/** @docs-private */\nfunction LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY() {\n return null;\n}\n/** Injection token that can be used to configure the default options for the LiveAnnouncer. */\nconst LIVE_ANNOUNCER_DEFAULT_OPTIONS = new InjectionToken('LIVE_ANNOUNCER_DEFAULT_OPTIONS');\n\nlet uniqueIds = 0;\nclass LiveAnnouncer {\n constructor(elementToken, _ngZone, _document, _defaultOptions) {\n this._ngZone = _ngZone;\n this._defaultOptions = _defaultOptions;\n // We inject the live element and document as `any` because the constructor signature cannot\n // reference browser globals (HTMLElement, Document) on non-browser environments, since having\n // a class decorator causes TypeScript to preserve the constructor signature types.\n this._document = _document;\n this._liveElement = elementToken || this._createLiveElement();\n }\n announce(message, ...args) {\n const defaultOptions = this._defaultOptions;\n let politeness;\n let duration;\n if (args.length === 1 && typeof args[0] === 'number') {\n duration = args[0];\n }\n else {\n [politeness, duration] = args;\n }\n this.clear();\n clearTimeout(this._previousTimeout);\n if (!politeness) {\n politeness =\n defaultOptions && defaultOptions.politeness ? defaultOptions.politeness : 'polite';\n }\n if (duration == null && defaultOptions) {\n duration = defaultOptions.duration;\n }\n // TODO: ensure changing the politeness works on all environments we support.\n this._liveElement.setAttribute('aria-live', politeness);\n if (this._liveElement.id) {\n this._exposeAnnouncerToModals(this._liveElement.id);\n }\n // This 100ms timeout is necessary for some browser + screen-reader combinations:\n // - Both JAWS and NVDA over IE11 will not announce anything without a non-zero timeout.\n // - With Chrome and IE11 with NVDA or JAWS, a repeated (identical) message won't be read a\n // second time without clearing and then using a non-zero delay.\n // (using JAWS 17 at time of this writing).\n return this._ngZone.runOutsideAngular(() => {\n if (!this._currentPromise) {\n this._currentPromise = new Promise(resolve => (this._currentResolve = resolve));\n }\n clearTimeout(this._previousTimeout);\n this._previousTimeout = setTimeout(() => {\n this._liveElement.textContent = message;\n if (typeof duration === 'number') {\n this._previousTimeout = setTimeout(() => this.clear(), duration);\n }\n // For some reason in tests this can be undefined\n // Probably related to ZoneJS and every other thing that patches browser APIs in tests\n this._currentResolve?.();\n this._currentPromise = this._currentResolve = undefined;\n }, 100);\n return this._currentPromise;\n });\n }\n /**\n * Clears the current text from the announcer element. Can be used to prevent\n * screen readers from reading the text out again while the user is going\n * through the page landmarks.\n */\n clear() {\n if (this._liveElement) {\n this._liveElement.textContent = '';\n }\n }\n ngOnDestroy() {\n clearTimeout(this._previousTimeout);\n this._liveElement?.remove();\n this._liveElement = null;\n this._currentResolve?.();\n this._currentPromise = this._currentResolve = undefined;\n }\n _createLiveElement() {\n const elementClass = 'cdk-live-announcer-element';\n const previousElements = this._document.getElementsByClassName(elementClass);\n const liveEl = this._document.createElement('div');\n // Remove any old containers. This can happen when coming in from a server-side-rendered page.\n for (let i = 0; i < previousElements.length; i++) {\n previousElements[i].remove();\n }\n liveEl.classList.add(elementClass);\n liveEl.classList.add('cdk-visually-hidden');\n liveEl.setAttribute('aria-atomic', 'true');\n liveEl.setAttribute('aria-live', 'polite');\n liveEl.id = `cdk-live-announcer-${uniqueIds++}`;\n this._document.body.appendChild(liveEl);\n return liveEl;\n }\n /**\n * Some browsers won't expose the accessibility node of the live announcer element if there is an\n * `aria-modal` and the live announcer is outside of it. This method works around the issue by\n * pointing the `aria-owns` of all modals to the live announcer element.\n */\n _exposeAnnouncerToModals(id) {\n // TODO(http://github.com/angular/components/issues/26853): consider de-duplicating this with\n // the `SnakBarContainer` and other usages.\n //\n // Note that the selector here is limited to CDK overlays at the moment in order to reduce the\n // section of the DOM we need to look through. This should cover all the cases we support, but\n // the selector can be expanded if it turns out to be too narrow.\n const modals = this._document.querySelectorAll('body > .cdk-overlay-container [aria-modal=\"true\"]');\n for (let i = 0; i < modals.length; i++) {\n const modal = modals[i];\n const ariaOwns = modal.getAttribute('aria-owns');\n if (!ariaOwns) {\n modal.setAttribute('aria-owns', id);\n }\n else if (ariaOwns.indexOf(id) === -1) {\n modal.setAttribute('aria-owns', ariaOwns + ' ' + id);\n }\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LiveAnnouncer, deps: [{ token: LIVE_ANNOUNCER_ELEMENT_TOKEN, optional: true }, { token: i0.NgZone }, { token: DOCUMENT }, { token: LIVE_ANNOUNCER_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LiveAnnouncer, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LiveAnnouncer, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [LIVE_ANNOUNCER_ELEMENT_TOKEN]\n }] }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [LIVE_ANNOUNCER_DEFAULT_OPTIONS]\n }] }] });\n/**\n * A directive that works similarly to aria-live, but uses the LiveAnnouncer to ensure compatibility\n * with a wider range of browsers and screen readers.\n */\nclass CdkAriaLive {\n /** The aria-live politeness level to use when announcing messages. */\n get politeness() {\n return this._politeness;\n }\n set politeness(value) {\n this._politeness = value === 'off' || value === 'assertive' ? value : 'polite';\n if (this._politeness === 'off') {\n if (this._subscription) {\n this._subscription.unsubscribe();\n this._subscription = null;\n }\n }\n else if (!this._subscription) {\n this._subscription = this._ngZone.runOutsideAngular(() => {\n return this._contentObserver.observe(this._elementRef).subscribe(() => {\n // Note that we use textContent here, rather than innerText, in order to avoid a reflow.\n const elementText = this._elementRef.nativeElement.textContent;\n // The `MutationObserver` fires also for attribute\n // changes which we don't want to announce.\n if (elementText !== this._previousAnnouncedText) {\n this._liveAnnouncer.announce(elementText, this._politeness, this.duration);\n this._previousAnnouncedText = elementText;\n }\n });\n });\n }\n }\n constructor(_elementRef, _liveAnnouncer, _contentObserver, _ngZone) {\n this._elementRef = _elementRef;\n this._liveAnnouncer = _liveAnnouncer;\n this._contentObserver = _contentObserver;\n this._ngZone = _ngZone;\n this._politeness = 'polite';\n }\n ngOnDestroy() {\n if (this._subscription) {\n this._subscription.unsubscribe();\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAriaLive, deps: [{ token: i0.ElementRef }, { token: LiveAnnouncer }, { token: i1$1.ContentObserver }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: CdkAriaLive, isStandalone: true, selector: \"[cdkAriaLive]\", inputs: { politeness: [\"cdkAriaLive\", \"politeness\"], duration: [\"cdkAriaLiveDuration\", \"duration\"] }, exportAs: [\"cdkAriaLive\"], ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAriaLive, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkAriaLive]',\n exportAs: 'cdkAriaLive',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ElementRef }, { type: LiveAnnouncer }, { type: i1$1.ContentObserver }, { type: i0.NgZone }], propDecorators: { politeness: [{\n type: Input,\n args: ['cdkAriaLive']\n }], duration: [{\n type: Input,\n args: ['cdkAriaLiveDuration']\n }] } });\n\n/** Detection mode used for attributing the origin of a focus event. */\nvar FocusMonitorDetectionMode;\n(function (FocusMonitorDetectionMode) {\n /**\n * Any mousedown, keydown, or touchstart event that happened in the previous\n * tick or the current tick will be used to assign a focus event's origin (to\n * either mouse, keyboard, or touch). This is the default option.\n */\n FocusMonitorDetectionMode[FocusMonitorDetectionMode[\"IMMEDIATE\"] = 0] = \"IMMEDIATE\";\n /**\n * A focus event's origin is always attributed to the last corresponding\n * mousedown, keydown, or touchstart event, no matter how long ago it occurred.\n */\n FocusMonitorDetectionMode[FocusMonitorDetectionMode[\"EVENTUAL\"] = 1] = \"EVENTUAL\";\n})(FocusMonitorDetectionMode || (FocusMonitorDetectionMode = {}));\n/** InjectionToken for FocusMonitorOptions. */\nconst FOCUS_MONITOR_DEFAULT_OPTIONS = new InjectionToken('cdk-focus-monitor-default-options');\n/**\n * Event listener options that enable capturing and also\n * mark the listener as passive if the browser supports it.\n */\nconst captureEventListenerOptions = normalizePassiveListenerOptions({\n passive: true,\n capture: true,\n});\n/** Monitors mouse and keyboard events to determine the cause of focus events. */\nclass FocusMonitor {\n constructor(_ngZone, _platform, _inputModalityDetector, \n /** @breaking-change 11.0.0 make document required */\n document, options) {\n this._ngZone = _ngZone;\n this._platform = _platform;\n this._inputModalityDetector = _inputModalityDetector;\n /** The focus origin that the next focus event is a result of. */\n this._origin = null;\n /** Whether the window has just been focused. */\n this._windowFocused = false;\n /**\n * Whether the origin was determined via a touch interaction. Necessary as properly attributing\n * focus events to touch interactions requires special logic.\n */\n this._originFromTouchInteraction = false;\n /** Map of elements being monitored to their info. */\n this._elementInfo = new Map();\n /** The number of elements currently being monitored. */\n this._monitoredElementCount = 0;\n /**\n * Keeps track of the root nodes to which we've currently bound a focus/blur handler,\n * as well as the number of monitored elements that they contain. We have to treat focus/blur\n * handlers differently from the rest of the events, because the browser won't emit events\n * to the document when focus moves inside of a shadow root.\n */\n this._rootNodeFocusListenerCount = new Map();\n /**\n * Event listener for `focus` events on the window.\n * Needs to be an arrow function in order to preserve the context when it gets bound.\n */\n this._windowFocusListener = () => {\n // Make a note of when the window regains focus, so we can\n // restore the origin info for the focused element.\n this._windowFocused = true;\n this._windowFocusTimeoutId = window.setTimeout(() => (this._windowFocused = false));\n };\n /** Subject for stopping our InputModalityDetector subscription. */\n this._stopInputModalityDetector = new Subject();\n /**\n * Event listener for `focus` and 'blur' events on the document.\n * Needs to be an arrow function in order to preserve the context when it gets bound.\n */\n this._rootNodeFocusAndBlurListener = (event) => {\n const target = _getEventTarget(event);\n // We need to walk up the ancestor chain in order to support `checkChildren`.\n for (let element = target; element; element = element.parentElement) {\n if (event.type === 'focus') {\n this._onFocus(event, element);\n }\n else {\n this._onBlur(event, element);\n }\n }\n };\n this._document = document;\n this._detectionMode = options?.detectionMode || FocusMonitorDetectionMode.IMMEDIATE;\n }\n monitor(element, checkChildren = false) {\n const nativeElement = coerceElement(element);\n // Do nothing if we're not on the browser platform or the passed in node isn't an element.\n if (!this._platform.isBrowser || nativeElement.nodeType !== 1) {\n // Note: we don't want the observable to emit at all so we don't pass any parameters.\n return of();\n }\n // If the element is inside the shadow DOM, we need to bind our focus/blur listeners to\n // the shadow root, rather than the `document`, because the browser won't emit focus events\n // to the `document`, if focus is moving within the same shadow root.\n const rootNode = _getShadowRoot(nativeElement) || this._getDocument();\n const cachedInfo = this._elementInfo.get(nativeElement);\n // Check if we're already monitoring this element.\n if (cachedInfo) {\n if (checkChildren) {\n // TODO(COMP-318): this can be problematic, because it'll turn all non-checkChildren\n // observers into ones that behave as if `checkChildren` was turned on. We need a more\n // robust solution.\n cachedInfo.checkChildren = true;\n }\n return cachedInfo.subject;\n }\n // Create monitored element info.\n const info = {\n checkChildren: checkChildren,\n subject: new Subject(),\n rootNode,\n };\n this._elementInfo.set(nativeElement, info);\n this._registerGlobalListeners(info);\n return info.subject;\n }\n stopMonitoring(element) {\n const nativeElement = coerceElement(element);\n const elementInfo = this._elementInfo.get(nativeElement);\n if (elementInfo) {\n elementInfo.subject.complete();\n this._setClasses(nativeElement);\n this._elementInfo.delete(nativeElement);\n this._removeGlobalListeners(elementInfo);\n }\n }\n focusVia(element, origin, options) {\n const nativeElement = coerceElement(element);\n const focusedElement = this._getDocument().activeElement;\n // If the element is focused already, calling `focus` again won't trigger the event listener\n // which means that the focus classes won't be updated. If that's the case, update the classes\n // directly without waiting for an event.\n if (nativeElement === focusedElement) {\n this._getClosestElementsInfo(nativeElement).forEach(([currentElement, info]) => this._originChanged(currentElement, origin, info));\n }\n else {\n this._setOrigin(origin);\n // `focus` isn't available on the server\n if (typeof nativeElement.focus === 'function') {\n nativeElement.focus(options);\n }\n }\n }\n ngOnDestroy() {\n this._elementInfo.forEach((_info, element) => this.stopMonitoring(element));\n }\n /** Access injected document if available or fallback to global document reference */\n _getDocument() {\n return this._document || document;\n }\n /** Use defaultView of injected document if available or fallback to global window reference */\n _getWindow() {\n const doc = this._getDocument();\n return doc.defaultView || window;\n }\n _getFocusOrigin(focusEventTarget) {\n if (this._origin) {\n // If the origin was realized via a touch interaction, we need to perform additional checks\n // to determine whether the focus origin should be attributed to touch or program.\n if (this._originFromTouchInteraction) {\n return this._shouldBeAttributedToTouch(focusEventTarget) ? 'touch' : 'program';\n }\n else {\n return this._origin;\n }\n }\n // If the window has just regained focus, we can restore the most recent origin from before the\n // window blurred. Otherwise, we've reached the point where we can't identify the source of the\n // focus. This typically means one of two things happened:\n //\n // 1) The element was programmatically focused, or\n // 2) The element was focused via screen reader navigation (which generally doesn't fire\n // events).\n //\n // Because we can't distinguish between these two cases, we default to setting `program`.\n if (this._windowFocused && this._lastFocusOrigin) {\n return this._lastFocusOrigin;\n }\n // If the interaction is coming from an input label, we consider it a mouse interactions.\n // This is a special case where focus moves on `click`, rather than `mousedown` which breaks\n // our detection, because all our assumptions are for `mousedown`. We need to handle this\n // special case, because it's very common for checkboxes and radio buttons.\n if (focusEventTarget && this._isLastInteractionFromInputLabel(focusEventTarget)) {\n return 'mouse';\n }\n return 'program';\n }\n /**\n * Returns whether the focus event should be attributed to touch. Recall that in IMMEDIATE mode, a\n * touch origin isn't immediately reset at the next tick (see _setOrigin). This means that when we\n * handle a focus event following a touch interaction, we need to determine whether (1) the focus\n * event was directly caused by the touch interaction or (2) the focus event was caused by a\n * subsequent programmatic focus call triggered by the touch interaction.\n * @param focusEventTarget The target of the focus event under examination.\n */\n _shouldBeAttributedToTouch(focusEventTarget) {\n // Please note that this check is not perfect. Consider the following edge case:\n //\n //
\n // \n //
\n //\n // Suppose there is a FocusMonitor in IMMEDIATE mode attached to #parent. When the user touches\n // #child, #parent is programmatically focused. This code will attribute the focus to touch\n // instead of program. This is a relatively minor edge-case that can be worked around by using\n // focusVia(parent, 'program') to focus #parent.\n return (this._detectionMode === FocusMonitorDetectionMode.EVENTUAL ||\n !!focusEventTarget?.contains(this._inputModalityDetector._mostRecentTarget));\n }\n /**\n * Sets the focus classes on the element based on the given focus origin.\n * @param element The element to update the classes on.\n * @param origin The focus origin.\n */\n _setClasses(element, origin) {\n element.classList.toggle('cdk-focused', !!origin);\n element.classList.toggle('cdk-touch-focused', origin === 'touch');\n element.classList.toggle('cdk-keyboard-focused', origin === 'keyboard');\n element.classList.toggle('cdk-mouse-focused', origin === 'mouse');\n element.classList.toggle('cdk-program-focused', origin === 'program');\n }\n /**\n * Updates the focus origin. If we're using immediate detection mode, we schedule an async\n * function to clear the origin at the end of a timeout. The duration of the timeout depends on\n * the origin being set.\n * @param origin The origin to set.\n * @param isFromInteraction Whether we are setting the origin from an interaction event.\n */\n _setOrigin(origin, isFromInteraction = false) {\n this._ngZone.runOutsideAngular(() => {\n this._origin = origin;\n this._originFromTouchInteraction = origin === 'touch' && isFromInteraction;\n // If we're in IMMEDIATE mode, reset the origin at the next tick (or in `TOUCH_BUFFER_MS` ms\n // for a touch event). We reset the origin at the next tick because Firefox focuses one tick\n // after the interaction event. We wait `TOUCH_BUFFER_MS` ms before resetting the origin for\n // a touch event because when a touch event is fired, the associated focus event isn't yet in\n // the event queue. Before doing so, clear any pending timeouts.\n if (this._detectionMode === FocusMonitorDetectionMode.IMMEDIATE) {\n clearTimeout(this._originTimeoutId);\n const ms = this._originFromTouchInteraction ? TOUCH_BUFFER_MS : 1;\n this._originTimeoutId = setTimeout(() => (this._origin = null), ms);\n }\n });\n }\n /**\n * Handles focus events on a registered element.\n * @param event The focus event.\n * @param element The monitored element.\n */\n _onFocus(event, element) {\n // NOTE(mmalerba): We currently set the classes based on the focus origin of the most recent\n // focus event affecting the monitored element. If we want to use the origin of the first event\n // instead we should check for the cdk-focused class here and return if the element already has\n // it. (This only matters for elements that have includesChildren = true).\n // If we are not counting child-element-focus as focused, make sure that the event target is the\n // monitored element itself.\n const elementInfo = this._elementInfo.get(element);\n const focusEventTarget = _getEventTarget(event);\n if (!elementInfo || (!elementInfo.checkChildren && element !== focusEventTarget)) {\n return;\n }\n this._originChanged(element, this._getFocusOrigin(focusEventTarget), elementInfo);\n }\n /**\n * Handles blur events on a registered element.\n * @param event The blur event.\n * @param element The monitored element.\n */\n _onBlur(event, element) {\n // If we are counting child-element-focus as focused, make sure that we aren't just blurring in\n // order to focus another child of the monitored element.\n const elementInfo = this._elementInfo.get(element);\n if (!elementInfo ||\n (elementInfo.checkChildren &&\n event.relatedTarget instanceof Node &&\n element.contains(event.relatedTarget))) {\n return;\n }\n this._setClasses(element);\n this._emitOrigin(elementInfo, null);\n }\n _emitOrigin(info, origin) {\n if (info.subject.observers.length) {\n this._ngZone.run(() => info.subject.next(origin));\n }\n }\n _registerGlobalListeners(elementInfo) {\n if (!this._platform.isBrowser) {\n return;\n }\n const rootNode = elementInfo.rootNode;\n const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode) || 0;\n if (!rootNodeFocusListeners) {\n this._ngZone.runOutsideAngular(() => {\n rootNode.addEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n rootNode.addEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n });\n }\n this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners + 1);\n // Register global listeners when first element is monitored.\n if (++this._monitoredElementCount === 1) {\n // Note: we listen to events in the capture phase so we\n // can detect them even if the user stops propagation.\n this._ngZone.runOutsideAngular(() => {\n const window = this._getWindow();\n window.addEventListener('focus', this._windowFocusListener);\n });\n // The InputModalityDetector is also just a collection of global listeners.\n this._inputModalityDetector.modalityDetected\n .pipe(takeUntil(this._stopInputModalityDetector))\n .subscribe(modality => {\n this._setOrigin(modality, true /* isFromInteraction */);\n });\n }\n }\n _removeGlobalListeners(elementInfo) {\n const rootNode = elementInfo.rootNode;\n if (this._rootNodeFocusListenerCount.has(rootNode)) {\n const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode);\n if (rootNodeFocusListeners > 1) {\n this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners - 1);\n }\n else {\n rootNode.removeEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n rootNode.removeEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n this._rootNodeFocusListenerCount.delete(rootNode);\n }\n }\n // Unregister global listeners when last element is unmonitored.\n if (!--this._monitoredElementCount) {\n const window = this._getWindow();\n window.removeEventListener('focus', this._windowFocusListener);\n // Equivalently, stop our InputModalityDetector subscription.\n this._stopInputModalityDetector.next();\n // Clear timeouts for all potentially pending timeouts to prevent the leaks.\n clearTimeout(this._windowFocusTimeoutId);\n clearTimeout(this._originTimeoutId);\n }\n }\n /** Updates all the state on an element once its focus origin has changed. */\n _originChanged(element, origin, elementInfo) {\n this._setClasses(element, origin);\n this._emitOrigin(elementInfo, origin);\n this._lastFocusOrigin = origin;\n }\n /**\n * Collects the `MonitoredElementInfo` of a particular element and\n * all of its ancestors that have enabled `checkChildren`.\n * @param element Element from which to start the search.\n */\n _getClosestElementsInfo(element) {\n const results = [];\n this._elementInfo.forEach((info, currentElement) => {\n if (currentElement === element || (info.checkChildren && currentElement.contains(element))) {\n results.push([currentElement, info]);\n }\n });\n return results;\n }\n /**\n * Returns whether an interaction is likely to have come from the user clicking the `label` of\n * an `input` or `textarea` in order to focus it.\n * @param focusEventTarget Target currently receiving focus.\n */\n _isLastInteractionFromInputLabel(focusEventTarget) {\n const { _mostRecentTarget: mostRecentTarget, mostRecentModality } = this._inputModalityDetector;\n // If the last interaction used the mouse on an element contained by one of the labels\n // of an `input`/`textarea` that is currently focused, it is very likely that the\n // user redirected focus using the label.\n if (mostRecentModality !== 'mouse' ||\n !mostRecentTarget ||\n mostRecentTarget === focusEventTarget ||\n (focusEventTarget.nodeName !== 'INPUT' && focusEventTarget.nodeName !== 'TEXTAREA') ||\n focusEventTarget.disabled) {\n return false;\n }\n const labels = focusEventTarget.labels;\n if (labels) {\n for (let i = 0; i < labels.length; i++) {\n if (labels[i].contains(mostRecentTarget)) {\n return true;\n }\n }\n }\n return false;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusMonitor, deps: [{ token: i0.NgZone }, { token: i1.Platform }, { token: InputModalityDetector }, { token: DOCUMENT, optional: true }, { token: FOCUS_MONITOR_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusMonitor, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: FocusMonitor, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i0.NgZone }, { type: i1.Platform }, { type: InputModalityDetector }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [DOCUMENT]\n }] }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [FOCUS_MONITOR_DEFAULT_OPTIONS]\n }] }] });\n/**\n * Directive that determines how a particular element was focused (via keyboard, mouse, touch, or\n * programmatically) and adds corresponding classes to the element.\n *\n * There are two variants of this directive:\n * 1) cdkMonitorElementFocus: does not consider an element to be focused if one of its children is\n * focused.\n * 2) cdkMonitorSubtreeFocus: considers an element focused if it or any of its children are focused.\n */\nclass CdkMonitorFocus {\n constructor(_elementRef, _focusMonitor) {\n this._elementRef = _elementRef;\n this._focusMonitor = _focusMonitor;\n this._focusOrigin = null;\n this.cdkFocusChange = new EventEmitter();\n }\n get focusOrigin() {\n return this._focusOrigin;\n }\n ngAfterViewInit() {\n const element = this._elementRef.nativeElement;\n this._monitorSubscription = this._focusMonitor\n .monitor(element, element.nodeType === 1 && element.hasAttribute('cdkMonitorSubtreeFocus'))\n .subscribe(origin => {\n this._focusOrigin = origin;\n this.cdkFocusChange.emit(origin);\n });\n }\n ngOnDestroy() {\n this._focusMonitor.stopMonitoring(this._elementRef);\n if (this._monitorSubscription) {\n this._monitorSubscription.unsubscribe();\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkMonitorFocus, deps: [{ token: i0.ElementRef }, { token: FocusMonitor }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: CdkMonitorFocus, isStandalone: true, selector: \"[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]\", outputs: { cdkFocusChange: \"cdkFocusChange\" }, exportAs: [\"cdkMonitorFocus\"], ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkMonitorFocus, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]',\n exportAs: 'cdkMonitorFocus',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ElementRef }, { type: FocusMonitor }], propDecorators: { cdkFocusChange: [{\n type: Output\n }] } });\n\n/** Set of possible high-contrast mode backgrounds. */\nvar HighContrastMode;\n(function (HighContrastMode) {\n HighContrastMode[HighContrastMode[\"NONE\"] = 0] = \"NONE\";\n HighContrastMode[HighContrastMode[\"BLACK_ON_WHITE\"] = 1] = \"BLACK_ON_WHITE\";\n HighContrastMode[HighContrastMode[\"WHITE_ON_BLACK\"] = 2] = \"WHITE_ON_BLACK\";\n})(HighContrastMode || (HighContrastMode = {}));\n/** CSS class applied to the document body when in black-on-white high-contrast mode. */\nconst BLACK_ON_WHITE_CSS_CLASS = 'cdk-high-contrast-black-on-white';\n/** CSS class applied to the document body when in white-on-black high-contrast mode. */\nconst WHITE_ON_BLACK_CSS_CLASS = 'cdk-high-contrast-white-on-black';\n/** CSS class applied to the document body when in high-contrast mode. */\nconst HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS = 'cdk-high-contrast-active';\n/**\n * Service to determine whether the browser is currently in a high-contrast-mode environment.\n *\n * Microsoft Windows supports an accessibility feature called \"High Contrast Mode\". This mode\n * changes the appearance of all applications, including web applications, to dramatically increase\n * contrast.\n *\n * IE, Edge, and Firefox currently support this mode. Chrome does not support Windows High Contrast\n * Mode. This service does not detect high-contrast mode as added by the Chrome \"High Contrast\"\n * browser extension.\n */\nclass HighContrastModeDetector {\n constructor(_platform, document) {\n this._platform = _platform;\n this._document = document;\n this._breakpointSubscription = inject(BreakpointObserver)\n .observe('(forced-colors: active)')\n .subscribe(() => {\n if (this._hasCheckedHighContrastMode) {\n this._hasCheckedHighContrastMode = false;\n this._applyBodyHighContrastModeCssClasses();\n }\n });\n }\n /** Gets the current high-contrast-mode for the page. */\n getHighContrastMode() {\n if (!this._platform.isBrowser) {\n return HighContrastMode.NONE;\n }\n // Create a test element with an arbitrary background-color that is neither black nor\n // white; high-contrast mode will coerce the color to either black or white. Also ensure that\n // appending the test element to the DOM does not affect layout by absolutely positioning it\n const testElement = this._document.createElement('div');\n testElement.style.backgroundColor = 'rgb(1,2,3)';\n testElement.style.position = 'absolute';\n this._document.body.appendChild(testElement);\n // Get the computed style for the background color, collapsing spaces to normalize between\n // browsers. Once we get this color, we no longer need the test element. Access the `window`\n // via the document so we can fake it in tests. Note that we have extra null checks, because\n // this logic will likely run during app bootstrap and throwing can break the entire app.\n const documentWindow = this._document.defaultView || window;\n const computedStyle = documentWindow && documentWindow.getComputedStyle\n ? documentWindow.getComputedStyle(testElement)\n : null;\n const computedColor = ((computedStyle && computedStyle.backgroundColor) || '').replace(/ /g, '');\n testElement.remove();\n switch (computedColor) {\n // Pre Windows 11 dark theme.\n case 'rgb(0,0,0)':\n // Windows 11 dark themes.\n case 'rgb(45,50,54)':\n case 'rgb(32,32,32)':\n return HighContrastMode.WHITE_ON_BLACK;\n // Pre Windows 11 light theme.\n case 'rgb(255,255,255)':\n // Windows 11 light theme.\n case 'rgb(255,250,239)':\n return HighContrastMode.BLACK_ON_WHITE;\n }\n return HighContrastMode.NONE;\n }\n ngOnDestroy() {\n this._breakpointSubscription.unsubscribe();\n }\n /** Applies CSS classes indicating high-contrast mode to document body (browser-only). */\n _applyBodyHighContrastModeCssClasses() {\n if (!this._hasCheckedHighContrastMode && this._platform.isBrowser && this._document.body) {\n const bodyClasses = this._document.body.classList;\n bodyClasses.remove(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);\n this._hasCheckedHighContrastMode = true;\n const mode = this.getHighContrastMode();\n if (mode === HighContrastMode.BLACK_ON_WHITE) {\n bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS);\n }\n else if (mode === HighContrastMode.WHITE_ON_BLACK) {\n bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);\n }\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: HighContrastModeDetector, deps: [{ token: i1.Platform }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: HighContrastModeDetector, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: HighContrastModeDetector, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i1.Platform }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }] });\n\nclass A11yModule {\n constructor(highContrastModeDetector) {\n highContrastModeDetector._applyBodyHighContrastModeCssClasses();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: A11yModule, deps: [{ token: HighContrastModeDetector }], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: A11yModule, imports: [ObserversModule, CdkAriaLive, CdkTrapFocus, CdkMonitorFocus], exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: A11yModule, imports: [ObserversModule] }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: A11yModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [ObserversModule, CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],\n exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],\n }]\n }], ctorParameters: () => [{ type: HighContrastModeDetector }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A11yModule, ActiveDescendantKeyManager, AriaDescriber, CDK_DESCRIBEDBY_HOST_ATTRIBUTE, CDK_DESCRIBEDBY_ID_PREFIX, CdkAriaLive, CdkMonitorFocus, CdkTrapFocus, ConfigurableFocusTrap, ConfigurableFocusTrapFactory, EventListenerFocusTrapInertStrategy, FOCUS_MONITOR_DEFAULT_OPTIONS, FOCUS_TRAP_INERT_STRATEGY, FocusKeyManager, FocusMonitor, FocusMonitorDetectionMode, FocusTrap, FocusTrapFactory, HighContrastMode, HighContrastModeDetector, INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS, INPUT_MODALITY_DETECTOR_OPTIONS, InputModalityDetector, InteractivityChecker, IsFocusableConfig, LIVE_ANNOUNCER_DEFAULT_OPTIONS, LIVE_ANNOUNCER_ELEMENT_TOKEN, LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY, ListKeyManager, LiveAnnouncer, MESSAGES_CONTAINER_ID, addAriaReferencedId, getAriaReferenceIds, isFakeMousedownFromScreenReader, isFakeTouchstartFromScreenReader, removeAriaReferencedId };\n","import * as i0 from '@angular/core';\nimport { InjectionToken, booleanAttribute, Directive, Input, EventEmitter, Optional, Inject, SkipSelf, Output, NgModule } from '@angular/core';\nimport * as i1 from '@angular/cdk/collections';\nimport { Subject, Subscription } from 'rxjs';\n\n/** Used to generate unique ID for each accordion. */\nlet nextId$1 = 0;\n/**\n * Injection token that can be used to reference instances of `CdkAccordion`. It serves\n * as alternative token to the actual `CdkAccordion` class which could cause unnecessary\n * retention of the class and its directive metadata.\n */\nconst CDK_ACCORDION = new InjectionToken('CdkAccordion');\n/**\n * Directive whose purpose is to manage the expanded state of CdkAccordionItem children.\n */\nclass CdkAccordion {\n constructor() {\n /** Emits when the state of the accordion changes */\n this._stateChanges = new Subject();\n /** Stream that emits true/false when openAll/closeAll is triggered. */\n this._openCloseAllActions = new Subject();\n /** A readonly id value to use for unique selection coordination. */\n this.id = `cdk-accordion-${nextId$1++}`;\n /** Whether the accordion should allow multiple expanded accordion items simultaneously. */\n this.multi = false;\n }\n /** Opens all enabled accordion items in an accordion where multi is enabled. */\n openAll() {\n if (this.multi) {\n this._openCloseAllActions.next(true);\n }\n }\n /** Closes all enabled accordion items. */\n closeAll() {\n this._openCloseAllActions.next(false);\n }\n ngOnChanges(changes) {\n this._stateChanges.next(changes);\n }\n ngOnDestroy() {\n this._stateChanges.complete();\n this._openCloseAllActions.complete();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordion, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"16.1.0\", version: \"17.2.0\", type: CdkAccordion, isStandalone: true, selector: \"cdk-accordion, [cdkAccordion]\", inputs: { multi: [\"multi\", \"multi\", booleanAttribute] }, providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }], exportAs: [\"cdkAccordion\"], usesOnChanges: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordion, decorators: [{\n type: Directive,\n args: [{\n selector: 'cdk-accordion, [cdkAccordion]',\n exportAs: 'cdkAccordion',\n providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }],\n standalone: true,\n }]\n }], propDecorators: { multi: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }] } });\n\n/** Used to generate unique ID for each accordion item. */\nlet nextId = 0;\n/**\n * An basic directive expected to be extended and decorated as a component. Sets up all\n * events and attributes needed to be managed by a CdkAccordion parent.\n */\nclass CdkAccordionItem {\n /** Whether the AccordionItem is expanded. */\n get expanded() {\n return this._expanded;\n }\n set expanded(expanded) {\n // Only emit events and update the internal value if the value changes.\n if (this._expanded !== expanded) {\n this._expanded = expanded;\n this.expandedChange.emit(expanded);\n if (expanded) {\n this.opened.emit();\n /**\n * In the unique selection dispatcher, the id parameter is the id of the CdkAccordionItem,\n * the name value is the id of the accordion.\n */\n const accordionId = this.accordion ? this.accordion.id : this.id;\n this._expansionDispatcher.notify(this.id, accordionId);\n }\n else {\n this.closed.emit();\n }\n // Ensures that the animation will run when the value is set outside of an `@Input`.\n // This includes cases like the open, close and toggle methods.\n this._changeDetectorRef.markForCheck();\n }\n }\n constructor(accordion, _changeDetectorRef, _expansionDispatcher) {\n this.accordion = accordion;\n this._changeDetectorRef = _changeDetectorRef;\n this._expansionDispatcher = _expansionDispatcher;\n /** Subscription to openAll/closeAll events. */\n this._openCloseAllSubscription = Subscription.EMPTY;\n /** Event emitted every time the AccordionItem is closed. */\n this.closed = new EventEmitter();\n /** Event emitted every time the AccordionItem is opened. */\n this.opened = new EventEmitter();\n /** Event emitted when the AccordionItem is destroyed. */\n this.destroyed = new EventEmitter();\n /**\n * Emits whenever the expanded state of the accordion changes.\n * Primarily used to facilitate two-way binding.\n * @docs-private\n */\n this.expandedChange = new EventEmitter();\n /** The unique AccordionItem id. */\n this.id = `cdk-accordion-child-${nextId++}`;\n this._expanded = false;\n /** Whether the AccordionItem is disabled. */\n this.disabled = false;\n /** Unregister function for _expansionDispatcher. */\n this._removeUniqueSelectionListener = () => { };\n this._removeUniqueSelectionListener = _expansionDispatcher.listen((id, accordionId) => {\n if (this.accordion &&\n !this.accordion.multi &&\n this.accordion.id === accordionId &&\n this.id !== id) {\n this.expanded = false;\n }\n });\n // When an accordion item is hosted in an accordion, subscribe to open/close events.\n if (this.accordion) {\n this._openCloseAllSubscription = this._subscribeToOpenCloseAllActions();\n }\n }\n /** Emits an event for the accordion item being destroyed. */\n ngOnDestroy() {\n this.opened.complete();\n this.closed.complete();\n this.destroyed.emit();\n this.destroyed.complete();\n this._removeUniqueSelectionListener();\n this._openCloseAllSubscription.unsubscribe();\n }\n /** Toggles the expanded state of the accordion item. */\n toggle() {\n if (!this.disabled) {\n this.expanded = !this.expanded;\n }\n }\n /** Sets the expanded state of the accordion item to false. */\n close() {\n if (!this.disabled) {\n this.expanded = false;\n }\n }\n /** Sets the expanded state of the accordion item to true. */\n open() {\n if (!this.disabled) {\n this.expanded = true;\n }\n }\n _subscribeToOpenCloseAllActions() {\n return this.accordion._openCloseAllActions.subscribe(expanded => {\n // Only change expanded state if item is enabled\n if (!this.disabled) {\n this.expanded = expanded;\n }\n });\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionItem, deps: [{ token: CDK_ACCORDION, optional: true, skipSelf: true }, { token: i0.ChangeDetectorRef }, { token: i1.UniqueSelectionDispatcher }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"16.1.0\", version: \"17.2.0\", type: CdkAccordionItem, isStandalone: true, selector: \"cdk-accordion-item, [cdkAccordionItem]\", inputs: { expanded: [\"expanded\", \"expanded\", booleanAttribute], disabled: [\"disabled\", \"disabled\", booleanAttribute] }, outputs: { closed: \"closed\", opened: \"opened\", destroyed: \"destroyed\", expandedChange: \"expandedChange\" }, providers: [\n // Provide `CDK_ACCORDION` as undefined to prevent nested accordion items from\n // registering to the same accordion.\n { provide: CDK_ACCORDION, useValue: undefined },\n ], exportAs: [\"cdkAccordionItem\"], ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionItem, decorators: [{\n type: Directive,\n args: [{\n selector: 'cdk-accordion-item, [cdkAccordionItem]',\n exportAs: 'cdkAccordionItem',\n providers: [\n // Provide `CDK_ACCORDION` as undefined to prevent nested accordion items from\n // registering to the same accordion.\n { provide: CDK_ACCORDION, useValue: undefined },\n ],\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: CdkAccordion, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [CDK_ACCORDION]\n }, {\n type: SkipSelf\n }] }, { type: i0.ChangeDetectorRef }, { type: i1.UniqueSelectionDispatcher }], propDecorators: { closed: [{\n type: Output\n }], opened: [{\n type: Output\n }], destroyed: [{\n type: Output\n }], expandedChange: [{\n type: Output\n }], expanded: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }], disabled: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }] } });\n\nclass CdkAccordionModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionModule, imports: [CdkAccordion, CdkAccordionItem], exports: [CdkAccordion, CdkAccordionItem] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkAccordionModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [CdkAccordion, CdkAccordionItem],\n exports: [CdkAccordion, CdkAccordionItem],\n }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CDK_ACCORDION, CdkAccordion, CdkAccordionItem, CdkAccordionModule };\n","import * as i0 from '@angular/core';\nimport { InjectionToken, inject, EventEmitter, Injectable, Optional, Inject, Directive, Output, Input, NgModule } from '@angular/core';\nimport { DOCUMENT } from '@angular/common';\n\n/**\n * Injection token used to inject the document into Directionality.\n * This is used so that the value can be faked in tests.\n *\n * We can't use the real document in tests because changing the real `dir` causes geometry-based\n * tests in Safari to fail.\n *\n * We also can't re-provide the DOCUMENT token from platform-browser because the unit tests\n * themselves use things like `querySelector` in test code.\n *\n * This token is defined in a separate file from Directionality as a workaround for\n * https://github.com/angular/angular/issues/22559\n *\n * @docs-private\n */\nconst DIR_DOCUMENT = new InjectionToken('cdk-dir-doc', {\n providedIn: 'root',\n factory: DIR_DOCUMENT_FACTORY,\n});\n/** @docs-private */\nfunction DIR_DOCUMENT_FACTORY() {\n return inject(DOCUMENT);\n}\n\n/** Regex that matches locales with an RTL script. Taken from `goog.i18n.bidi.isRtlLanguage`. */\nconst RTL_LOCALE_PATTERN = /^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|.*[-_](Adlm|Arab|Hebr|Nkoo|Rohg|Thaa))(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)/i;\n/** Resolves a string value to a specific direction. */\nfunction _resolveDirectionality(rawValue) {\n const value = rawValue?.toLowerCase() || '';\n if (value === 'auto' && typeof navigator !== 'undefined' && navigator?.language) {\n return RTL_LOCALE_PATTERN.test(navigator.language) ? 'rtl' : 'ltr';\n }\n return value === 'rtl' ? 'rtl' : 'ltr';\n}\n/**\n * The directionality (LTR / RTL) context for the application (or a subtree of it).\n * Exposes the current direction and a stream of direction changes.\n */\nclass Directionality {\n constructor(_document) {\n /** The current 'ltr' or 'rtl' value. */\n this.value = 'ltr';\n /** Stream that emits whenever the 'ltr' / 'rtl' state changes. */\n this.change = new EventEmitter();\n if (_document) {\n const bodyDir = _document.body ? _document.body.dir : null;\n const htmlDir = _document.documentElement ? _document.documentElement.dir : null;\n this.value = _resolveDirectionality(bodyDir || htmlDir || 'ltr');\n }\n }\n ngOnDestroy() {\n this.change.complete();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Directionality, deps: [{ token: DIR_DOCUMENT, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Directionality, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Directionality, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [DIR_DOCUMENT]\n }] }] });\n\n/**\n * Directive to listen for changes of direction of part of the DOM.\n *\n * Provides itself as Directionality such that descendant directives only need to ever inject\n * Directionality to get the closest direction.\n */\nclass Dir {\n constructor() {\n /** Normalized direction that accounts for invalid/unsupported values. */\n this._dir = 'ltr';\n /** Whether the `value` has been set to its initial value. */\n this._isInitialized = false;\n /** Event emitted when the direction changes. */\n this.change = new EventEmitter();\n }\n /** @docs-private */\n get dir() {\n return this._dir;\n }\n set dir(value) {\n const previousValue = this._dir;\n // Note: `_resolveDirectionality` resolves the language based on the browser's language,\n // whereas the browser does it based on the content of the element. Since doing so based\n // on the content can be expensive, for now we're doing the simpler matching.\n this._dir = _resolveDirectionality(value);\n this._rawDir = value;\n if (previousValue !== this._dir && this._isInitialized) {\n this.change.emit(this._dir);\n }\n }\n /** Current layout direction of the element. */\n get value() {\n return this.dir;\n }\n /** Initialize once default value has been set. */\n ngAfterContentInit() {\n this._isInitialized = true;\n }\n ngOnDestroy() {\n this.change.complete();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Dir, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: Dir, isStandalone: true, selector: \"[dir]\", inputs: { dir: \"dir\" }, outputs: { change: \"dirChange\" }, host: { properties: { \"attr.dir\": \"_rawDir\" } }, providers: [{ provide: Directionality, useExisting: Dir }], exportAs: [\"dir\"], ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Dir, decorators: [{\n type: Directive,\n args: [{\n selector: '[dir]',\n providers: [{ provide: Directionality, useExisting: Dir }],\n host: { '[attr.dir]': '_rawDir' },\n exportAs: 'dir',\n standalone: true,\n }]\n }], propDecorators: { change: [{\n type: Output,\n args: ['dirChange']\n }], dir: [{\n type: Input\n }] } });\n\nclass BidiModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BidiModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: BidiModule, imports: [Dir], exports: [Dir] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BidiModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BidiModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [Dir],\n exports: [Dir],\n }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BidiModule, DIR_DOCUMENT, Dir, Directionality };\n","import { Version } from '@angular/core';\n\n/** Current version of the Angular Component Development Kit. */\nconst VERSION = new Version('17.3.10');\n\nexport { VERSION };\n","import { DOCUMENT } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { Injectable, Inject, InjectionToken, EventEmitter, Directive, Optional, Input, Output, NgModule } from '@angular/core';\n\n/**\n * A pending copy-to-clipboard operation.\n *\n * The implementation of copying text to the clipboard modifies the DOM and\n * forces a re-layout. This re-layout can take too long if the string is large,\n * causing the execCommand('copy') to happen too long after the user clicked.\n * This results in the browser refusing to copy. This object lets the\n * re-layout happen in a separate tick from copying by providing a copy function\n * that can be called later.\n *\n * Destroy must be called when no longer in use, regardless of whether `copy` is\n * called.\n */\nclass PendingCopy {\n constructor(text, _document) {\n this._document = _document;\n const textarea = (this._textarea = this._document.createElement('textarea'));\n const styles = textarea.style;\n // Hide the element for display and accessibility. Set a fixed position so the page layout\n // isn't affected. We use `fixed` with `top: 0`, because focus is moved into the textarea\n // for a split second and if it's off-screen, some browsers will attempt to scroll it into view.\n styles.position = 'fixed';\n styles.top = styles.opacity = '0';\n styles.left = '-999em';\n textarea.setAttribute('aria-hidden', 'true');\n textarea.value = text;\n // Making the textarea `readonly` prevents the screen from jumping on iOS Safari (see #25169).\n textarea.readOnly = true;\n // The element needs to be inserted into the fullscreen container, if the page\n // is in fullscreen mode, otherwise the browser won't execute the copy command.\n (this._document.fullscreenElement || this._document.body).appendChild(textarea);\n }\n /** Finishes copying the text. */\n copy() {\n const textarea = this._textarea;\n let successful = false;\n try {\n // Older browsers could throw if copy is not supported.\n if (textarea) {\n const currentFocus = this._document.activeElement;\n textarea.select();\n textarea.setSelectionRange(0, textarea.value.length);\n successful = this._document.execCommand('copy');\n if (currentFocus) {\n currentFocus.focus();\n }\n }\n }\n catch {\n // Discard error.\n // Initial setting of {@code successful} will represent failure here.\n }\n return successful;\n }\n /** Cleans up DOM changes used to perform the copy operation. */\n destroy() {\n const textarea = this._textarea;\n if (textarea) {\n textarea.remove();\n this._textarea = undefined;\n }\n }\n}\n\n/**\n * A service for copying text to the clipboard.\n */\nclass Clipboard {\n constructor(document) {\n this._document = document;\n }\n /**\n * Copies the provided text into the user's clipboard.\n *\n * @param text The string to copy.\n * @returns Whether the operation was successful.\n */\n copy(text) {\n const pendingCopy = this.beginCopy(text);\n const successful = pendingCopy.copy();\n pendingCopy.destroy();\n return successful;\n }\n /**\n * Prepares a string to be copied later. This is useful for large strings\n * which take too long to successfully render and be copied in the same tick.\n *\n * The caller must call `destroy` on the returned `PendingCopy`.\n *\n * @param text The string to copy.\n * @returns the pending copy operation.\n */\n beginCopy(text) {\n return new PendingCopy(text, this._document);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Clipboard, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Clipboard, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Clipboard, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }] });\n\n/** Injection token that can be used to provide the default options to `CdkCopyToClipboard`. */\nconst CDK_COPY_TO_CLIPBOARD_CONFIG = new InjectionToken('CDK_COPY_TO_CLIPBOARD_CONFIG');\n/**\n * Provides behavior for a button that when clicked copies content into user's\n * clipboard.\n */\nclass CdkCopyToClipboard {\n constructor(_clipboard, _ngZone, config) {\n this._clipboard = _clipboard;\n this._ngZone = _ngZone;\n /** Content to be copied. */\n this.text = '';\n /**\n * How many times to attempt to copy the text. This may be necessary for longer text, because\n * the browser needs time to fill an intermediate textarea element and copy the content.\n */\n this.attempts = 1;\n /**\n * Emits when some text is copied to the clipboard. The\n * emitted value indicates whether copying was successful.\n */\n this.copied = new EventEmitter();\n /** Copies that are currently being attempted. */\n this._pending = new Set();\n if (config && config.attempts != null) {\n this.attempts = config.attempts;\n }\n }\n /** Copies the current text to the clipboard. */\n copy(attempts = this.attempts) {\n if (attempts > 1) {\n let remainingAttempts = attempts;\n const pending = this._clipboard.beginCopy(this.text);\n this._pending.add(pending);\n const attempt = () => {\n const successful = pending.copy();\n if (!successful && --remainingAttempts && !this._destroyed) {\n // We use 1 for the timeout since it's more predictable when flushing in unit tests.\n this._currentTimeout = this._ngZone.runOutsideAngular(() => setTimeout(attempt, 1));\n }\n else {\n this._currentTimeout = null;\n this._pending.delete(pending);\n pending.destroy();\n this.copied.emit(successful);\n }\n };\n attempt();\n }\n else {\n this.copied.emit(this._clipboard.copy(this.text));\n }\n }\n ngOnDestroy() {\n if (this._currentTimeout) {\n clearTimeout(this._currentTimeout);\n }\n this._pending.forEach(copy => copy.destroy());\n this._pending.clear();\n this._destroyed = true;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkCopyToClipboard, deps: [{ token: Clipboard }, { token: i0.NgZone }, { token: CDK_COPY_TO_CLIPBOARD_CONFIG, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: CdkCopyToClipboard, isStandalone: true, selector: \"[cdkCopyToClipboard]\", inputs: { text: [\"cdkCopyToClipboard\", \"text\"], attempts: [\"cdkCopyToClipboardAttempts\", \"attempts\"] }, outputs: { copied: \"cdkCopyToClipboardCopied\" }, host: { listeners: { \"click\": \"copy()\" } }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkCopyToClipboard, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkCopyToClipboard]',\n host: {\n '(click)': 'copy()',\n },\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: Clipboard }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [CDK_COPY_TO_CLIPBOARD_CONFIG]\n }] }], propDecorators: { text: [{\n type: Input,\n args: ['cdkCopyToClipboard']\n }], attempts: [{\n type: Input,\n args: ['cdkCopyToClipboardAttempts']\n }], copied: [{\n type: Output,\n args: ['cdkCopyToClipboardCopied']\n }] } });\n\nclass ClipboardModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ClipboardModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: ClipboardModule, imports: [CdkCopyToClipboard], exports: [CdkCopyToClipboard] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ClipboardModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ClipboardModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [CdkCopyToClipboard],\n exports: [CdkCopyToClipboard],\n }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CDK_COPY_TO_CLIPBOARD_CONFIG, CdkCopyToClipboard, Clipboard, ClipboardModule, PendingCopy };\n","import { ElementRef } from '@angular/core';\n\n/** Coerces a data-bound value (typically a string) to a boolean. */\nfunction coerceBooleanProperty(value) {\n return value != null && `${value}` !== 'false';\n}\n\nfunction coerceNumberProperty(value, fallbackValue = 0) {\n return _isNumberValue(value) ? Number(value) : fallbackValue;\n}\n/**\n * Whether the provided value is considered a number.\n * @docs-private\n */\nfunction _isNumberValue(value) {\n // parseFloat(value) handles most of the cases we're interested in (it treats null, empty string,\n // and other non-number values as NaN, where Number just uses 0) but it considers the string\n // '123hello' to be a valid number. Therefore we also check if Number(value) is NaN.\n return !isNaN(parseFloat(value)) && !isNaN(Number(value));\n}\n\nfunction coerceArray(value) {\n return Array.isArray(value) ? value : [value];\n}\n\n/** Coerces a value to a CSS pixel value. */\nfunction coerceCssPixelValue(value) {\n if (value == null) {\n return '';\n }\n return typeof value === 'string' ? value : `${value}px`;\n}\n\n/**\n * Coerces an ElementRef or an Element into an element.\n * Useful for APIs that can accept either a ref or the native element itself.\n */\nfunction coerceElement(elementOrRef) {\n return elementOrRef instanceof ElementRef ? elementOrRef.nativeElement : elementOrRef;\n}\n\n/**\n * Coerces a value to an array of trimmed non-empty strings.\n * Any input that is not an array, `null` or `undefined` will be turned into a string\n * via `toString()` and subsequently split with the given separator.\n * `null` and `undefined` will result in an empty array.\n * This results in the following outcomes:\n * - `null` -> `[]`\n * - `[null]` -> `[\"null\"]`\n * - `[\"a\", \"b \", \" \"]` -> `[\"a\", \"b\"]`\n * - `[1, [2, 3]]` -> `[\"1\", \"2,3\"]`\n * - `[{ a: 0 }]` -> `[\"[object Object]\"]`\n * - `{ a: 0 }` -> `[\"[object\", \"Object]\"]`\n *\n * Useful for defining CSS classes or table columns.\n * @param value the value to coerce into an array of strings\n * @param separator split-separator if value isn't an array\n */\nfunction coerceStringArray(value, separator = /\\s+/) {\n const result = [];\n if (value != null) {\n const sourceValues = Array.isArray(value) ? value : `${value}`.split(separator);\n for (const sourceValue of sourceValues) {\n const trimmedString = `${sourceValue}`.trim();\n if (trimmedString) {\n result.push(trimmedString);\n }\n }\n }\n return result;\n}\n\nexport { _isNumberValue, coerceArray, coerceBooleanProperty, coerceCssPixelValue, coerceElement, coerceNumberProperty, coerceStringArray };\n","import { ConnectableObservable, isObservable, of, Subject } from 'rxjs';\nimport * as i0 from '@angular/core';\nimport { InjectionToken, Injectable } from '@angular/core';\n\nclass DataSource {\n}\n/** Checks whether an object is a data source. */\nfunction isDataSource(value) {\n // Check if the value is a DataSource by observing if it has a connect function. Cannot\n // be checked as an `instanceof DataSource` since people could create their own sources\n // that match the interface, but don't extend DataSource. We also can't use `isObservable`\n // here, because of some internal apps.\n return value && typeof value.connect === 'function' && !(value instanceof ConnectableObservable);\n}\n\n/** DataSource wrapper for a native array. */\nclass ArrayDataSource extends DataSource {\n constructor(_data) {\n super();\n this._data = _data;\n }\n connect() {\n return isObservable(this._data) ? this._data : of(this._data);\n }\n disconnect() { }\n}\n\n/** Indicates how a view was changed by a {@link _ViewRepeater}. */\nvar _ViewRepeaterOperation;\n(function (_ViewRepeaterOperation) {\n /** The content of an existing view was replaced with another item. */\n _ViewRepeaterOperation[_ViewRepeaterOperation[\"REPLACED\"] = 0] = \"REPLACED\";\n /** A new view was created with `createEmbeddedView`. */\n _ViewRepeaterOperation[_ViewRepeaterOperation[\"INSERTED\"] = 1] = \"INSERTED\";\n /** The position of a view changed, but the content remains the same. */\n _ViewRepeaterOperation[_ViewRepeaterOperation[\"MOVED\"] = 2] = \"MOVED\";\n /** A view was detached from the view container. */\n _ViewRepeaterOperation[_ViewRepeaterOperation[\"REMOVED\"] = 3] = \"REMOVED\";\n})(_ViewRepeaterOperation || (_ViewRepeaterOperation = {}));\n/**\n * Injection token for {@link _ViewRepeater}. This token is for use by Angular Material only.\n * @docs-private\n */\nconst _VIEW_REPEATER_STRATEGY = new InjectionToken('_ViewRepeater');\n\n/**\n * A repeater that destroys views when they are removed from a\n * {@link ViewContainerRef}. When new items are inserted into the container,\n * the repeater will always construct a new embedded view for each item.\n *\n * @template T The type for the embedded view's $implicit property.\n * @template R The type for the item in each IterableDiffer change record.\n * @template C The type for the context passed to each embedded view.\n */\nclass _DisposeViewRepeaterStrategy {\n applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) {\n changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => {\n let view;\n let operation;\n if (record.previousIndex == null) {\n const insertContext = itemContextFactory(record, adjustedPreviousIndex, currentIndex);\n view = viewContainerRef.createEmbeddedView(insertContext.templateRef, insertContext.context, insertContext.index);\n operation = _ViewRepeaterOperation.INSERTED;\n }\n else if (currentIndex == null) {\n viewContainerRef.remove(adjustedPreviousIndex);\n operation = _ViewRepeaterOperation.REMOVED;\n }\n else {\n view = viewContainerRef.get(adjustedPreviousIndex);\n viewContainerRef.move(view, currentIndex);\n operation = _ViewRepeaterOperation.MOVED;\n }\n if (itemViewChanged) {\n itemViewChanged({\n context: view?.context,\n operation,\n record,\n });\n }\n });\n }\n detach() { }\n}\n\n/**\n * A repeater that caches views when they are removed from a\n * {@link ViewContainerRef}. When new items are inserted into the container,\n * the repeater will reuse one of the cached views instead of creating a new\n * embedded view. Recycling cached views reduces the quantity of expensive DOM\n * inserts.\n *\n * @template T The type for the embedded view's $implicit property.\n * @template R The type for the item in each IterableDiffer change record.\n * @template C The type for the context passed to each embedded view.\n */\nclass _RecycleViewRepeaterStrategy {\n constructor() {\n /**\n * The size of the cache used to store unused views.\n * Setting the cache size to `0` will disable caching. Defaults to 20 views.\n */\n this.viewCacheSize = 20;\n /**\n * View cache that stores embedded view instances that have been previously stamped out,\n * but don't are not currently rendered. The view repeater will reuse these views rather than\n * creating brand new ones.\n *\n * TODO(michaeljamesparsons) Investigate whether using a linked list would improve performance.\n */\n this._viewCache = [];\n }\n /** Apply changes to the DOM. */\n applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) {\n // Rearrange the views to put them in the right location.\n changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => {\n let view;\n let operation;\n if (record.previousIndex == null) {\n // Item added.\n const viewArgsFactory = () => itemContextFactory(record, adjustedPreviousIndex, currentIndex);\n view = this._insertView(viewArgsFactory, currentIndex, viewContainerRef, itemValueResolver(record));\n operation = view ? _ViewRepeaterOperation.INSERTED : _ViewRepeaterOperation.REPLACED;\n }\n else if (currentIndex == null) {\n // Item removed.\n this._detachAndCacheView(adjustedPreviousIndex, viewContainerRef);\n operation = _ViewRepeaterOperation.REMOVED;\n }\n else {\n // Item moved.\n view = this._moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, itemValueResolver(record));\n operation = _ViewRepeaterOperation.MOVED;\n }\n if (itemViewChanged) {\n itemViewChanged({\n context: view?.context,\n operation,\n record,\n });\n }\n });\n }\n detach() {\n for (const view of this._viewCache) {\n view.destroy();\n }\n this._viewCache = [];\n }\n /**\n * Inserts a view for a new item, either from the cache or by creating a new\n * one. Returns `undefined` if the item was inserted into a cached view.\n */\n _insertView(viewArgsFactory, currentIndex, viewContainerRef, value) {\n const cachedView = this._insertViewFromCache(currentIndex, viewContainerRef);\n if (cachedView) {\n cachedView.context.$implicit = value;\n return undefined;\n }\n const viewArgs = viewArgsFactory();\n return viewContainerRef.createEmbeddedView(viewArgs.templateRef, viewArgs.context, viewArgs.index);\n }\n /** Detaches the view at the given index and inserts into the view cache. */\n _detachAndCacheView(index, viewContainerRef) {\n const detachedView = viewContainerRef.detach(index);\n this._maybeCacheView(detachedView, viewContainerRef);\n }\n /** Moves view at the previous index to the current index. */\n _moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, value) {\n const view = viewContainerRef.get(adjustedPreviousIndex);\n viewContainerRef.move(view, currentIndex);\n view.context.$implicit = value;\n return view;\n }\n /**\n * Cache the given detached view. If the cache is full, the view will be\n * destroyed.\n */\n _maybeCacheView(view, viewContainerRef) {\n if (this._viewCache.length < this.viewCacheSize) {\n this._viewCache.push(view);\n }\n else {\n const index = viewContainerRef.indexOf(view);\n // The host component could remove views from the container outside of\n // the view repeater. It's unlikely this will occur, but just in case,\n // destroy the view on its own, otherwise destroy it through the\n // container to ensure that all the references are removed.\n if (index === -1) {\n view.destroy();\n }\n else {\n viewContainerRef.remove(index);\n }\n }\n }\n /** Inserts a recycled view from the cache at the given index. */\n _insertViewFromCache(index, viewContainerRef) {\n const cachedView = this._viewCache.pop();\n if (cachedView) {\n viewContainerRef.insert(cachedView, index);\n }\n return cachedView || null;\n }\n}\n\n/**\n * Class to be used to power selecting one or more options from a list.\n */\nclass SelectionModel {\n /** Selected values. */\n get selected() {\n if (!this._selected) {\n this._selected = Array.from(this._selection.values());\n }\n return this._selected;\n }\n constructor(_multiple = false, initiallySelectedValues, _emitChanges = true, compareWith) {\n this._multiple = _multiple;\n this._emitChanges = _emitChanges;\n this.compareWith = compareWith;\n /** Currently-selected values. */\n this._selection = new Set();\n /** Keeps track of the deselected options that haven't been emitted by the change event. */\n this._deselectedToEmit = [];\n /** Keeps track of the selected options that haven't been emitted by the change event. */\n this._selectedToEmit = [];\n /** Event emitted when the value has changed. */\n this.changed = new Subject();\n if (initiallySelectedValues && initiallySelectedValues.length) {\n if (_multiple) {\n initiallySelectedValues.forEach(value => this._markSelected(value));\n }\n else {\n this._markSelected(initiallySelectedValues[0]);\n }\n // Clear the array in order to avoid firing the change event for preselected values.\n this._selectedToEmit.length = 0;\n }\n }\n /**\n * Selects a value or an array of values.\n * @param values The values to select\n * @return Whether the selection changed as a result of this call\n * @breaking-change 16.0.0 make return type boolean\n */\n select(...values) {\n this._verifyValueAssignment(values);\n values.forEach(value => this._markSelected(value));\n const changed = this._hasQueuedChanges();\n this._emitChangeEvent();\n return changed;\n }\n /**\n * Deselects a value or an array of values.\n * @param values The values to deselect\n * @return Whether the selection changed as a result of this call\n * @breaking-change 16.0.0 make return type boolean\n */\n deselect(...values) {\n this._verifyValueAssignment(values);\n values.forEach(value => this._unmarkSelected(value));\n const changed = this._hasQueuedChanges();\n this._emitChangeEvent();\n return changed;\n }\n /**\n * Sets the selected values\n * @param values The new selected values\n * @return Whether the selection changed as a result of this call\n * @breaking-change 16.0.0 make return type boolean\n */\n setSelection(...values) {\n this._verifyValueAssignment(values);\n const oldValues = this.selected;\n const newSelectedSet = new Set(values);\n values.forEach(value => this._markSelected(value));\n oldValues\n .filter(value => !newSelectedSet.has(this._getConcreteValue(value, newSelectedSet)))\n .forEach(value => this._unmarkSelected(value));\n const changed = this._hasQueuedChanges();\n this._emitChangeEvent();\n return changed;\n }\n /**\n * Toggles a value between selected and deselected.\n * @param value The value to toggle\n * @return Whether the selection changed as a result of this call\n * @breaking-change 16.0.0 make return type boolean\n */\n toggle(value) {\n return this.isSelected(value) ? this.deselect(value) : this.select(value);\n }\n /**\n * Clears all of the selected values.\n * @param flushEvent Whether to flush the changes in an event.\n * If false, the changes to the selection will be flushed along with the next event.\n * @return Whether the selection changed as a result of this call\n * @breaking-change 16.0.0 make return type boolean\n */\n clear(flushEvent = true) {\n this._unmarkAll();\n const changed = this._hasQueuedChanges();\n if (flushEvent) {\n this._emitChangeEvent();\n }\n return changed;\n }\n /**\n * Determines whether a value is selected.\n */\n isSelected(value) {\n return this._selection.has(this._getConcreteValue(value));\n }\n /**\n * Determines whether the model does not have a value.\n */\n isEmpty() {\n return this._selection.size === 0;\n }\n /**\n * Determines whether the model has a value.\n */\n hasValue() {\n return !this.isEmpty();\n }\n /**\n * Sorts the selected values based on a predicate function.\n */\n sort(predicate) {\n if (this._multiple && this.selected) {\n this._selected.sort(predicate);\n }\n }\n /**\n * Gets whether multiple values can be selected.\n */\n isMultipleSelection() {\n return this._multiple;\n }\n /** Emits a change event and clears the records of selected and deselected values. */\n _emitChangeEvent() {\n // Clear the selected values so they can be re-cached.\n this._selected = null;\n if (this._selectedToEmit.length || this._deselectedToEmit.length) {\n this.changed.next({\n source: this,\n added: this._selectedToEmit,\n removed: this._deselectedToEmit,\n });\n this._deselectedToEmit = [];\n this._selectedToEmit = [];\n }\n }\n /** Selects a value. */\n _markSelected(value) {\n value = this._getConcreteValue(value);\n if (!this.isSelected(value)) {\n if (!this._multiple) {\n this._unmarkAll();\n }\n if (!this.isSelected(value)) {\n this._selection.add(value);\n }\n if (this._emitChanges) {\n this._selectedToEmit.push(value);\n }\n }\n }\n /** Deselects a value. */\n _unmarkSelected(value) {\n value = this._getConcreteValue(value);\n if (this.isSelected(value)) {\n this._selection.delete(value);\n if (this._emitChanges) {\n this._deselectedToEmit.push(value);\n }\n }\n }\n /** Clears out the selected values. */\n _unmarkAll() {\n if (!this.isEmpty()) {\n this._selection.forEach(value => this._unmarkSelected(value));\n }\n }\n /**\n * Verifies the value assignment and throws an error if the specified value array is\n * including multiple values while the selection model is not supporting multiple values.\n */\n _verifyValueAssignment(values) {\n if (values.length > 1 && !this._multiple && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw getMultipleValuesInSingleSelectionError();\n }\n }\n /** Whether there are queued up change to be emitted. */\n _hasQueuedChanges() {\n return !!(this._deselectedToEmit.length || this._selectedToEmit.length);\n }\n /** Returns a value that is comparable to inputValue by applying compareWith function, returns the same inputValue otherwise. */\n _getConcreteValue(inputValue, selection) {\n if (!this.compareWith) {\n return inputValue;\n }\n else {\n selection = selection ?? this._selection;\n for (let selectedValue of selection) {\n if (this.compareWith(inputValue, selectedValue)) {\n return selectedValue;\n }\n }\n return inputValue;\n }\n }\n}\n/**\n * Returns an error that reports that multiple values are passed into a selection model\n * with a single value.\n * @docs-private\n */\nfunction getMultipleValuesInSingleSelectionError() {\n return Error('Cannot pass multiple values into SelectionModel with single-value mode.');\n}\n\n/**\n * Class to coordinate unique selection based on name.\n * Intended to be consumed as an Angular service.\n * This service is needed because native radio change events are only fired on the item currently\n * being selected, and we still need to uncheck the previous selection.\n *\n * This service does not *store* any IDs and names because they may change at any time, so it is\n * less error-prone if they are simply passed through when the events occur.\n */\nclass UniqueSelectionDispatcher {\n constructor() {\n this._listeners = [];\n }\n /**\n * Notify other items that selection for the given name has been set.\n * @param id ID of the item.\n * @param name Name of the item.\n */\n notify(id, name) {\n for (let listener of this._listeners) {\n listener(id, name);\n }\n }\n /**\n * Listen for future changes to item selection.\n * @return Function used to deregister listener\n */\n listen(listener) {\n this._listeners.push(listener);\n return () => {\n this._listeners = this._listeners.filter((registered) => {\n return listener !== registered;\n });\n };\n }\n ngOnDestroy() {\n this._listeners = [];\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: UniqueSelectionDispatcher, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: UniqueSelectionDispatcher, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: UniqueSelectionDispatcher, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { ArrayDataSource, DataSource, SelectionModel, UniqueSelectionDispatcher, _DisposeViewRepeaterStrategy, _RecycleViewRepeaterStrategy, _VIEW_REPEATER_STRATEGY, _ViewRepeaterOperation, getMultipleValuesInSingleSelectionError, isDataSource };\n","const MAC_ENTER = 3;\nconst BACKSPACE = 8;\nconst TAB = 9;\nconst NUM_CENTER = 12;\nconst ENTER = 13;\nconst SHIFT = 16;\nconst CONTROL = 17;\nconst ALT = 18;\nconst PAUSE = 19;\nconst CAPS_LOCK = 20;\nconst ESCAPE = 27;\nconst SPACE = 32;\nconst PAGE_UP = 33;\nconst PAGE_DOWN = 34;\nconst END = 35;\nconst HOME = 36;\nconst LEFT_ARROW = 37;\nconst UP_ARROW = 38;\nconst RIGHT_ARROW = 39;\nconst DOWN_ARROW = 40;\nconst PLUS_SIGN = 43;\nconst PRINT_SCREEN = 44;\nconst INSERT = 45;\nconst DELETE = 46;\nconst ZERO = 48;\nconst ONE = 49;\nconst TWO = 50;\nconst THREE = 51;\nconst FOUR = 52;\nconst FIVE = 53;\nconst SIX = 54;\nconst SEVEN = 55;\nconst EIGHT = 56;\nconst NINE = 57;\nconst FF_SEMICOLON = 59; // Firefox (Gecko) fires this for semicolon instead of 186\nconst FF_EQUALS = 61; // Firefox (Gecko) fires this for equals instead of 187\nconst QUESTION_MARK = 63;\nconst AT_SIGN = 64;\nconst A = 65;\nconst B = 66;\nconst C = 67;\nconst D = 68;\nconst E = 69;\nconst F = 70;\nconst G = 71;\nconst H = 72;\nconst I = 73;\nconst J = 74;\nconst K = 75;\nconst L = 76;\nconst M = 77;\nconst N = 78;\nconst O = 79;\nconst P = 80;\nconst Q = 81;\nconst R = 82;\nconst S = 83;\nconst T = 84;\nconst U = 85;\nconst V = 86;\nconst W = 87;\nconst X = 88;\nconst Y = 89;\nconst Z = 90;\nconst META = 91; // WIN_KEY_LEFT\nconst MAC_WK_CMD_LEFT = 91;\nconst MAC_WK_CMD_RIGHT = 93;\nconst CONTEXT_MENU = 93;\nconst NUMPAD_ZERO = 96;\nconst NUMPAD_ONE = 97;\nconst NUMPAD_TWO = 98;\nconst NUMPAD_THREE = 99;\nconst NUMPAD_FOUR = 100;\nconst NUMPAD_FIVE = 101;\nconst NUMPAD_SIX = 102;\nconst NUMPAD_SEVEN = 103;\nconst NUMPAD_EIGHT = 104;\nconst NUMPAD_NINE = 105;\nconst NUMPAD_MULTIPLY = 106;\nconst NUMPAD_PLUS = 107;\nconst NUMPAD_MINUS = 109;\nconst NUMPAD_PERIOD = 110;\nconst NUMPAD_DIVIDE = 111;\nconst F1 = 112;\nconst F2 = 113;\nconst F3 = 114;\nconst F4 = 115;\nconst F5 = 116;\nconst F6 = 117;\nconst F7 = 118;\nconst F8 = 119;\nconst F9 = 120;\nconst F10 = 121;\nconst F11 = 122;\nconst F12 = 123;\nconst NUM_LOCK = 144;\nconst SCROLL_LOCK = 145;\nconst FIRST_MEDIA = 166;\nconst FF_MINUS = 173;\nconst MUTE = 173; // Firefox (Gecko) fires 181 for MUTE\nconst VOLUME_DOWN = 174; // Firefox (Gecko) fires 182 for VOLUME_DOWN\nconst VOLUME_UP = 175; // Firefox (Gecko) fires 183 for VOLUME_UP\nconst FF_MUTE = 181;\nconst FF_VOLUME_DOWN = 182;\nconst LAST_MEDIA = 183;\nconst FF_VOLUME_UP = 183;\nconst SEMICOLON = 186; // Firefox (Gecko) fires 59 for SEMICOLON\nconst EQUALS = 187; // Firefox (Gecko) fires 61 for EQUALS\nconst COMMA = 188;\nconst DASH = 189; // Firefox (Gecko) fires 173 for DASH/MINUS\nconst PERIOD = 190;\nconst SLASH = 191;\nconst APOSTROPHE = 192;\nconst TILDE = 192;\nconst OPEN_SQUARE_BRACKET = 219;\nconst BACKSLASH = 220;\nconst CLOSE_SQUARE_BRACKET = 221;\nconst SINGLE_QUOTE = 222;\nconst MAC_META = 224;\n\n/**\n * Checks whether a modifier key is pressed.\n * @param event Event to be checked.\n */\nfunction hasModifierKey(event, ...modifiers) {\n if (modifiers.length) {\n return modifiers.some(modifier => event[modifier]);\n }\n return event.altKey || event.shiftKey || event.ctrlKey || event.metaKey;\n}\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A, ALT, APOSTROPHE, AT_SIGN, B, BACKSLASH, BACKSPACE, C, CAPS_LOCK, CLOSE_SQUARE_BRACKET, COMMA, CONTEXT_MENU, CONTROL, D, DASH, DELETE, DOWN_ARROW, E, EIGHT, END, ENTER, EQUALS, ESCAPE, F, F1, F10, F11, F12, F2, F3, F4, F5, F6, F7, F8, F9, FF_EQUALS, FF_MINUS, FF_MUTE, FF_SEMICOLON, FF_VOLUME_DOWN, FF_VOLUME_UP, FIRST_MEDIA, FIVE, FOUR, G, H, HOME, I, INSERT, J, K, L, LAST_MEDIA, LEFT_ARROW, M, MAC_ENTER, MAC_META, MAC_WK_CMD_LEFT, MAC_WK_CMD_RIGHT, META, MUTE, N, NINE, NUMPAD_DIVIDE, NUMPAD_EIGHT, NUMPAD_FIVE, NUMPAD_FOUR, NUMPAD_MINUS, NUMPAD_MULTIPLY, NUMPAD_NINE, NUMPAD_ONE, NUMPAD_PERIOD, NUMPAD_PLUS, NUMPAD_SEVEN, NUMPAD_SIX, NUMPAD_THREE, NUMPAD_TWO, NUMPAD_ZERO, NUM_CENTER, NUM_LOCK, O, ONE, OPEN_SQUARE_BRACKET, P, PAGE_DOWN, PAGE_UP, PAUSE, PERIOD, PLUS_SIGN, PRINT_SCREEN, Q, QUESTION_MARK, R, RIGHT_ARROW, S, SCROLL_LOCK, SEMICOLON, SEVEN, SHIFT, SINGLE_QUOTE, SIX, SLASH, SPACE, T, TAB, THREE, TILDE, TWO, U, UP_ARROW, V, VOLUME_DOWN, VOLUME_UP, W, X, Y, Z, ZERO, hasModifierKey };\n","import * as i0 from '@angular/core';\nimport { NgModule, CSP_NONCE, Injectable, Optional, Inject } from '@angular/core';\nimport { coerceArray } from '@angular/cdk/coercion';\nimport { Subject, combineLatest, concat, Observable } from 'rxjs';\nimport { take, skip, debounceTime, map, startWith, takeUntil } from 'rxjs/operators';\nimport * as i1 from '@angular/cdk/platform';\n\nclass LayoutModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LayoutModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: LayoutModule }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LayoutModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: LayoutModule, decorators: [{\n type: NgModule,\n args: [{}]\n }] });\n\n/** Global registry for all dynamically-created, injected media queries. */\nconst mediaQueriesForWebkitCompatibility = new Set();\n/** Style tag that holds all of the dynamically-created media queries. */\nlet mediaQueryStyleNode;\n/** A utility for calling matchMedia queries. */\nclass MediaMatcher {\n constructor(_platform, _nonce) {\n this._platform = _platform;\n this._nonce = _nonce;\n this._matchMedia =\n this._platform.isBrowser && window.matchMedia\n ? // matchMedia is bound to the window scope intentionally as it is an illegal invocation to\n // call it from a different scope.\n window.matchMedia.bind(window)\n : noopMatchMedia;\n }\n /**\n * Evaluates the given media query and returns the native MediaQueryList from which results\n * can be retrieved.\n * Confirms the layout engine will trigger for the selector query provided and returns the\n * MediaQueryList for the query provided.\n */\n matchMedia(query) {\n if (this._platform.WEBKIT || this._platform.BLINK) {\n createEmptyStyleRule(query, this._nonce);\n }\n return this._matchMedia(query);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MediaMatcher, deps: [{ token: i1.Platform }, { token: CSP_NONCE, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MediaMatcher, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MediaMatcher, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: i1.Platform }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [CSP_NONCE]\n }] }] });\n/**\n * Creates an empty stylesheet that is used to work around browser inconsistencies related to\n * `matchMedia`. At the time of writing, it handles the following cases:\n * 1. On WebKit browsers, a media query has to have at least one rule in order for `matchMedia`\n * to fire. We work around it by declaring a dummy stylesheet with a `@media` declaration.\n * 2. In some cases Blink browsers will stop firing the `matchMedia` listener if none of the rules\n * inside the `@media` match existing elements on the page. We work around it by having one rule\n * targeting the `body`. See https://github.com/angular/components/issues/23546.\n */\nfunction createEmptyStyleRule(query, nonce) {\n if (mediaQueriesForWebkitCompatibility.has(query)) {\n return;\n }\n try {\n if (!mediaQueryStyleNode) {\n mediaQueryStyleNode = document.createElement('style');\n if (nonce) {\n mediaQueryStyleNode.setAttribute('nonce', nonce);\n }\n mediaQueryStyleNode.setAttribute('type', 'text/css');\n document.head.appendChild(mediaQueryStyleNode);\n }\n if (mediaQueryStyleNode.sheet) {\n mediaQueryStyleNode.sheet.insertRule(`@media ${query} {body{ }}`, 0);\n mediaQueriesForWebkitCompatibility.add(query);\n }\n }\n catch (e) {\n console.error(e);\n }\n}\n/** No-op matchMedia replacement for non-browser platforms. */\nfunction noopMatchMedia(query) {\n // Use `as any` here to avoid adding additional necessary properties for\n // the noop matcher.\n return {\n matches: query === 'all' || query === '',\n media: query,\n addListener: () => { },\n removeListener: () => { },\n };\n}\n\n/** Utility for checking the matching state of @media queries. */\nclass BreakpointObserver {\n constructor(_mediaMatcher, _zone) {\n this._mediaMatcher = _mediaMatcher;\n this._zone = _zone;\n /** A map of all media queries currently being listened for. */\n this._queries = new Map();\n /** A subject for all other observables to takeUntil based on. */\n this._destroySubject = new Subject();\n }\n /** Completes the active subject, signalling to all other observables to complete. */\n ngOnDestroy() {\n this._destroySubject.next();\n this._destroySubject.complete();\n }\n /**\n * Whether one or more media queries match the current viewport size.\n * @param value One or more media queries to check.\n * @returns Whether any of the media queries match.\n */\n isMatched(value) {\n const queries = splitQueries(coerceArray(value));\n return queries.some(mediaQuery => this._registerQuery(mediaQuery).mql.matches);\n }\n /**\n * Gets an observable of results for the given queries that will emit new results for any changes\n * in matching of the given queries.\n * @param value One or more media queries to check.\n * @returns A stream of matches for the given queries.\n */\n observe(value) {\n const queries = splitQueries(coerceArray(value));\n const observables = queries.map(query => this._registerQuery(query).observable);\n let stateObservable = combineLatest(observables);\n // Emit the first state immediately, and then debounce the subsequent emissions.\n stateObservable = concat(stateObservable.pipe(take(1)), stateObservable.pipe(skip(1), debounceTime(0)));\n return stateObservable.pipe(map(breakpointStates => {\n const response = {\n matches: false,\n breakpoints: {},\n };\n breakpointStates.forEach(({ matches, query }) => {\n response.matches = response.matches || matches;\n response.breakpoints[query] = matches;\n });\n return response;\n }));\n }\n /** Registers a specific query to be listened for. */\n _registerQuery(query) {\n // Only set up a new MediaQueryList if it is not already being listened for.\n if (this._queries.has(query)) {\n return this._queries.get(query);\n }\n const mql = this._mediaMatcher.matchMedia(query);\n // Create callback for match changes and add it is as a listener.\n const queryObservable = new Observable((observer) => {\n // Listener callback methods are wrapped to be placed back in ngZone. Callbacks must be placed\n // back into the zone because matchMedia is only included in Zone.js by loading the\n // webapis-media-query.js file alongside the zone.js file. Additionally, some browsers do not\n // have MediaQueryList inherit from EventTarget, which causes inconsistencies in how Zone.js\n // patches it.\n const handler = (e) => this._zone.run(() => observer.next(e));\n mql.addListener(handler);\n return () => {\n mql.removeListener(handler);\n };\n }).pipe(startWith(mql), map(({ matches }) => ({ query, matches })), takeUntil(this._destroySubject));\n // Add the MediaQueryList to the set of queries.\n const output = { observable: queryObservable, mql };\n this._queries.set(query, output);\n return output;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BreakpointObserver, deps: [{ token: MediaMatcher }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BreakpointObserver, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: BreakpointObserver, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: MediaMatcher }, { type: i0.NgZone }] });\n/**\n * Split each query string into separate query strings if two queries are provided as comma\n * separated.\n */\nfunction splitQueries(queries) {\n return queries\n .map(query => query.split(','))\n .reduce((a1, a2) => a1.concat(a2))\n .map(query => query.trim());\n}\n\n// PascalCase is being used as Breakpoints is used like an enum.\n// tslint:disable-next-line:variable-name\nconst Breakpoints = {\n XSmall: '(max-width: 599.98px)',\n Small: '(min-width: 600px) and (max-width: 959.98px)',\n Medium: '(min-width: 960px) and (max-width: 1279.98px)',\n Large: '(min-width: 1280px) and (max-width: 1919.98px)',\n XLarge: '(min-width: 1920px)',\n Handset: '(max-width: 599.98px) and (orientation: portrait), ' +\n '(max-width: 959.98px) and (orientation: landscape)',\n Tablet: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait), ' +\n '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n Web: '(min-width: 840px) and (orientation: portrait), ' +\n '(min-width: 1280px) and (orientation: landscape)',\n HandsetPortrait: '(max-width: 599.98px) and (orientation: portrait)',\n TabletPortrait: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait)',\n WebPortrait: '(min-width: 840px) and (orientation: portrait)',\n HandsetLandscape: '(max-width: 959.98px) and (orientation: landscape)',\n TabletLandscape: '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n WebLandscape: '(min-width: 1280px) and (orientation: landscape)',\n};\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BreakpointObserver, Breakpoints, LayoutModule, MediaMatcher };\n","import { coerceElement, coerceNumberProperty } from '@angular/cdk/coercion';\nimport * as i0 from '@angular/core';\nimport { Injectable, EventEmitter, booleanAttribute, Directive, Output, Input, NgModule } from '@angular/core';\nimport { Observable, Subject } from 'rxjs';\nimport { map, filter, debounceTime } from 'rxjs/operators';\n\n// Angular may add, remove, or edit comment nodes during change detection. We don't care about\n// these changes because they don't affect the user-preceived content, and worse it can cause\n// infinite change detection cycles where the change detection updates a comment, triggering the\n// MutationObserver, triggering another change detection and kicking the cycle off again.\nfunction shouldIgnoreRecord(record) {\n // Ignore changes to comment text.\n if (record.type === 'characterData' && record.target instanceof Comment) {\n return true;\n }\n // Ignore addition / removal of comments.\n if (record.type === 'childList') {\n for (let i = 0; i < record.addedNodes.length; i++) {\n if (!(record.addedNodes[i] instanceof Comment)) {\n return false;\n }\n }\n for (let i = 0; i < record.removedNodes.length; i++) {\n if (!(record.removedNodes[i] instanceof Comment)) {\n return false;\n }\n }\n return true;\n }\n // Observe everything else.\n return false;\n}\n/**\n * Factory that creates a new MutationObserver and allows us to stub it out in unit tests.\n * @docs-private\n */\nclass MutationObserverFactory {\n create(callback) {\n return typeof MutationObserver === 'undefined' ? null : new MutationObserver(callback);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MutationObserverFactory, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MutationObserverFactory, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: MutationObserverFactory, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }] });\n/** An injectable service that allows watching elements for changes to their content. */\nclass ContentObserver {\n constructor(_mutationObserverFactory) {\n this._mutationObserverFactory = _mutationObserverFactory;\n /** Keeps track of the existing MutationObservers so they can be reused. */\n this._observedElements = new Map();\n }\n ngOnDestroy() {\n this._observedElements.forEach((_, element) => this._cleanupObserver(element));\n }\n observe(elementOrRef) {\n const element = coerceElement(elementOrRef);\n return new Observable((observer) => {\n const stream = this._observeElement(element);\n const subscription = stream\n .pipe(map(records => records.filter(record => !shouldIgnoreRecord(record))), filter(records => !!records.length))\n .subscribe(observer);\n return () => {\n subscription.unsubscribe();\n this._unobserveElement(element);\n };\n });\n }\n /**\n * Observes the given element by using the existing MutationObserver if available, or creating a\n * new one if not.\n */\n _observeElement(element) {\n if (!this._observedElements.has(element)) {\n const stream = new Subject();\n const observer = this._mutationObserverFactory.create(mutations => stream.next(mutations));\n if (observer) {\n observer.observe(element, {\n characterData: true,\n childList: true,\n subtree: true,\n });\n }\n this._observedElements.set(element, { observer, stream, count: 1 });\n }\n else {\n this._observedElements.get(element).count++;\n }\n return this._observedElements.get(element).stream;\n }\n /**\n * Un-observes the given element and cleans up the underlying MutationObserver if nobody else is\n * observing this element.\n */\n _unobserveElement(element) {\n if (this._observedElements.has(element)) {\n this._observedElements.get(element).count--;\n if (!this._observedElements.get(element).count) {\n this._cleanupObserver(element);\n }\n }\n }\n /** Clean up the underlying MutationObserver for the specified element. */\n _cleanupObserver(element) {\n if (this._observedElements.has(element)) {\n const { observer, stream } = this._observedElements.get(element);\n if (observer) {\n observer.disconnect();\n }\n stream.complete();\n this._observedElements.delete(element);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ContentObserver, deps: [{ token: MutationObserverFactory }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ContentObserver, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ContentObserver, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: MutationObserverFactory }] });\n/**\n * Directive that triggers a callback whenever the content of\n * its associated element has changed.\n */\nclass CdkObserveContent {\n /**\n * Whether observing content is disabled. This option can be used\n * to disconnect the underlying MutationObserver until it is needed.\n */\n get disabled() {\n return this._disabled;\n }\n set disabled(value) {\n this._disabled = value;\n this._disabled ? this._unsubscribe() : this._subscribe();\n }\n /** Debounce interval for emitting the changes. */\n get debounce() {\n return this._debounce;\n }\n set debounce(value) {\n this._debounce = coerceNumberProperty(value);\n this._subscribe();\n }\n constructor(_contentObserver, _elementRef, _ngZone) {\n this._contentObserver = _contentObserver;\n this._elementRef = _elementRef;\n this._ngZone = _ngZone;\n /** Event emitted for each change in the element's content. */\n this.event = new EventEmitter();\n this._disabled = false;\n this._currentSubscription = null;\n }\n ngAfterContentInit() {\n if (!this._currentSubscription && !this.disabled) {\n this._subscribe();\n }\n }\n ngOnDestroy() {\n this._unsubscribe();\n }\n _subscribe() {\n this._unsubscribe();\n const stream = this._contentObserver.observe(this._elementRef);\n // TODO(mmalerba): We shouldn't be emitting on this @Output() outside the zone.\n // Consider brining it back inside the zone next time we're making breaking changes.\n // Bringing it back inside can cause things like infinite change detection loops and changed\n // after checked errors if people's code isn't handling it properly.\n this._ngZone.runOutsideAngular(() => {\n this._currentSubscription = (this.debounce ? stream.pipe(debounceTime(this.debounce)) : stream).subscribe(this.event);\n });\n }\n _unsubscribe() {\n this._currentSubscription?.unsubscribe();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkObserveContent, deps: [{ token: ContentObserver }, { token: i0.ElementRef }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"16.1.0\", version: \"17.2.0\", type: CdkObserveContent, isStandalone: true, selector: \"[cdkObserveContent]\", inputs: { disabled: [\"cdkObserveContentDisabled\", \"disabled\", booleanAttribute], debounce: \"debounce\" }, outputs: { event: \"cdkObserveContent\" }, exportAs: [\"cdkObserveContent\"], ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkObserveContent, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkObserveContent]',\n exportAs: 'cdkObserveContent',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: ContentObserver }, { type: i0.ElementRef }, { type: i0.NgZone }], propDecorators: { event: [{\n type: Output,\n args: ['cdkObserveContent']\n }], disabled: [{\n type: Input,\n args: [{ alias: 'cdkObserveContentDisabled', transform: booleanAttribute }]\n }], debounce: [{\n type: Input\n }] } });\nclass ObserversModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ObserversModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: ObserversModule, imports: [CdkObserveContent], exports: [CdkObserveContent] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ObserversModule, providers: [MutationObserverFactory] }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: ObserversModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [CdkObserveContent],\n exports: [CdkObserveContent],\n providers: [MutationObserverFactory],\n }]\n }] });\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CdkObserveContent, ContentObserver, MutationObserverFactory, ObserversModule };\n","import * as i0 from '@angular/core';\nimport { PLATFORM_ID, Injectable, Inject, NgModule } from '@angular/core';\nimport { isPlatformBrowser } from '@angular/common';\n\n// Whether the current platform supports the V8 Break Iterator. The V8 check\n// is necessary to detect all Blink based browsers.\nlet hasV8BreakIterator;\n// We need a try/catch around the reference to `Intl`, because accessing it in some cases can\n// cause IE to throw. These cases are tied to particular versions of Windows and can happen if\n// the consumer is providing a polyfilled `Map`. See:\n// https://github.com/Microsoft/ChakraCore/issues/3189\n// https://github.com/angular/components/issues/15687\ntry {\n hasV8BreakIterator = typeof Intl !== 'undefined' && Intl.v8BreakIterator;\n}\ncatch {\n hasV8BreakIterator = false;\n}\n/**\n * Service to detect the current platform by comparing the userAgent strings and\n * checking browser-specific global properties.\n */\nclass Platform {\n constructor(_platformId) {\n this._platformId = _platformId;\n // We want to use the Angular platform check because if the Document is shimmed\n // without the navigator, the following checks will fail. This is preferred because\n // sometimes the Document may be shimmed without the user's knowledge or intention\n /** Whether the Angular application is being rendered in the browser. */\n this.isBrowser = this._platformId\n ? isPlatformBrowser(this._platformId)\n : typeof document === 'object' && !!document;\n /** Whether the current browser is Microsoft Edge. */\n this.EDGE = this.isBrowser && /(edge)/i.test(navigator.userAgent);\n /** Whether the current rendering engine is Microsoft Trident. */\n this.TRIDENT = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);\n // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.\n /** Whether the current rendering engine is Blink. */\n this.BLINK = this.isBrowser &&\n !!(window.chrome || hasV8BreakIterator) &&\n typeof CSS !== 'undefined' &&\n !this.EDGE &&\n !this.TRIDENT;\n // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to\n // ensure that Webkit runs standalone and is not used as another engine's base.\n /** Whether the current rendering engine is WebKit. */\n this.WEBKIT = this.isBrowser &&\n /AppleWebKit/i.test(navigator.userAgent) &&\n !this.BLINK &&\n !this.EDGE &&\n !this.TRIDENT;\n /** Whether the current platform is Apple iOS. */\n this.IOS = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) && !('MSStream' in window);\n // It's difficult to detect the plain Gecko engine, because most of the browsers identify\n // them self as Gecko-like browsers and modify the userAgent's according to that.\n // Since we only cover one explicit Firefox case, we can simply check for Firefox\n // instead of having an unstable check for Gecko.\n /** Whether the current browser is Firefox. */\n this.FIREFOX = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);\n /** Whether the current platform is Android. */\n // Trident on mobile adds the android platform to the userAgent to trick detections.\n this.ANDROID = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;\n // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake\n // this and just place the Safari keyword in the userAgent. To be more safe about Safari every\n // Safari browser should also use Webkit as its layout engine.\n /** Whether the current browser is Safari. */\n this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Platform, deps: [{ token: PLATFORM_ID }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Platform, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: Platform, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: Object, decorators: [{\n type: Inject,\n args: [PLATFORM_ID]\n }] }] });\n\nclass PlatformModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PlatformModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: PlatformModule }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PlatformModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PlatformModule, decorators: [{\n type: NgModule,\n args: [{}]\n }] });\n\n/** Cached result Set of input types support by the current browser. */\nlet supportedInputTypes;\n/** Types of `` that *might* be supported. */\nconst candidateInputTypes = [\n // `color` must come first. Chrome 56 shows a warning if we change the type to `color` after\n // first changing it to something else:\n // The specified value \"\" does not conform to the required format.\n // The format is \"#rrggbb\" where rr, gg, bb are two-digit hexadecimal numbers.\n 'color',\n 'button',\n 'checkbox',\n 'date',\n 'datetime-local',\n 'email',\n 'file',\n 'hidden',\n 'image',\n 'month',\n 'number',\n 'password',\n 'radio',\n 'range',\n 'reset',\n 'search',\n 'submit',\n 'tel',\n 'text',\n 'time',\n 'url',\n 'week',\n];\n/** @returns The input types supported by this browser. */\nfunction getSupportedInputTypes() {\n // Result is cached.\n if (supportedInputTypes) {\n return supportedInputTypes;\n }\n // We can't check if an input type is not supported until we're on the browser, so say that\n // everything is supported when not on the browser. We don't use `Platform` here since it's\n // just a helper function and can't inject it.\n if (typeof document !== 'object' || !document) {\n supportedInputTypes = new Set(candidateInputTypes);\n return supportedInputTypes;\n }\n let featureTestInput = document.createElement('input');\n supportedInputTypes = new Set(candidateInputTypes.filter(value => {\n featureTestInput.setAttribute('type', value);\n return featureTestInput.type === value;\n }));\n return supportedInputTypes;\n}\n\n/** Cached result of whether the user's browser supports passive event listeners. */\nlet supportsPassiveEvents;\n/**\n * Checks whether the user's browser supports passive event listeners.\n * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md\n */\nfunction supportsPassiveEventListeners() {\n if (supportsPassiveEvents == null && typeof window !== 'undefined') {\n try {\n window.addEventListener('test', null, Object.defineProperty({}, 'passive', {\n get: () => (supportsPassiveEvents = true),\n }));\n }\n finally {\n supportsPassiveEvents = supportsPassiveEvents || false;\n }\n }\n return supportsPassiveEvents;\n}\n/**\n * Normalizes an `AddEventListener` object to something that can be passed\n * to `addEventListener` on any browser, no matter whether it supports the\n * `options` parameter.\n * @param options Object to be normalized.\n */\nfunction normalizePassiveListenerOptions(options) {\n return supportsPassiveEventListeners() ? options : !!options.capture;\n}\n\n/** The possible ways the browser may handle the horizontal scroll axis in RTL languages. */\nvar RtlScrollAxisType;\n(function (RtlScrollAxisType) {\n /**\n * scrollLeft is 0 when scrolled all the way left and (scrollWidth - clientWidth) when scrolled\n * all the way right.\n */\n RtlScrollAxisType[RtlScrollAxisType[\"NORMAL\"] = 0] = \"NORMAL\";\n /**\n * scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled\n * all the way right.\n */\n RtlScrollAxisType[RtlScrollAxisType[\"NEGATED\"] = 1] = \"NEGATED\";\n /**\n * scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled\n * all the way right.\n */\n RtlScrollAxisType[RtlScrollAxisType[\"INVERTED\"] = 2] = \"INVERTED\";\n})(RtlScrollAxisType || (RtlScrollAxisType = {}));\n/** Cached result of the way the browser handles the horizontal scroll axis in RTL mode. */\nlet rtlScrollAxisType;\n/** Cached result of the check that indicates whether the browser supports scroll behaviors. */\nlet scrollBehaviorSupported;\n/** Check whether the browser supports scroll behaviors. */\nfunction supportsScrollBehavior() {\n if (scrollBehaviorSupported == null) {\n // If we're not in the browser, it can't be supported. Also check for `Element`, because\n // some projects stub out the global `document` during SSR which can throw us off.\n if (typeof document !== 'object' || !document || typeof Element !== 'function' || !Element) {\n scrollBehaviorSupported = false;\n return scrollBehaviorSupported;\n }\n // If the element can have a `scrollBehavior` style, we can be sure that it's supported.\n if ('scrollBehavior' in document.documentElement.style) {\n scrollBehaviorSupported = true;\n }\n else {\n // At this point we have 3 possibilities: `scrollTo` isn't supported at all, it's\n // supported but it doesn't handle scroll behavior, or it has been polyfilled.\n const scrollToFunction = Element.prototype.scrollTo;\n if (scrollToFunction) {\n // We can detect if the function has been polyfilled by calling `toString` on it. Native\n // functions are obfuscated using `[native code]`, whereas if it was overwritten we'd get\n // the actual function source. Via https://davidwalsh.name/detect-native-function. Consider\n // polyfilled functions as supporting scroll behavior.\n scrollBehaviorSupported = !/\\{\\s*\\[native code\\]\\s*\\}/.test(scrollToFunction.toString());\n }\n else {\n scrollBehaviorSupported = false;\n }\n }\n }\n return scrollBehaviorSupported;\n}\n/**\n * Checks the type of RTL scroll axis used by this browser. As of time of writing, Chrome is NORMAL,\n * Firefox & Safari are NEGATED, and IE & Edge are INVERTED.\n */\nfunction getRtlScrollAxisType() {\n // We can't check unless we're on the browser. Just assume 'normal' if we're not.\n if (typeof document !== 'object' || !document) {\n return RtlScrollAxisType.NORMAL;\n }\n if (rtlScrollAxisType == null) {\n // Create a 1px wide scrolling container and a 2px wide content element.\n const scrollContainer = document.createElement('div');\n const containerStyle = scrollContainer.style;\n scrollContainer.dir = 'rtl';\n containerStyle.width = '1px';\n containerStyle.overflow = 'auto';\n containerStyle.visibility = 'hidden';\n containerStyle.pointerEvents = 'none';\n containerStyle.position = 'absolute';\n const content = document.createElement('div');\n const contentStyle = content.style;\n contentStyle.width = '2px';\n contentStyle.height = '1px';\n scrollContainer.appendChild(content);\n document.body.appendChild(scrollContainer);\n rtlScrollAxisType = RtlScrollAxisType.NORMAL;\n // The viewport starts scrolled all the way to the right in RTL mode. If we are in a NORMAL\n // browser this would mean that the scrollLeft should be 1. If it's zero instead we know we're\n // dealing with one of the other two types of browsers.\n if (scrollContainer.scrollLeft === 0) {\n // In a NEGATED browser the scrollLeft is always somewhere in [-maxScrollAmount, 0]. For an\n // INVERTED browser it is always somewhere in [0, maxScrollAmount]. We can determine which by\n // setting to the scrollLeft to 1. This is past the max for a NEGATED browser, so it will\n // return 0 when we read it again.\n scrollContainer.scrollLeft = 1;\n rtlScrollAxisType =\n scrollContainer.scrollLeft === 0 ? RtlScrollAxisType.NEGATED : RtlScrollAxisType.INVERTED;\n }\n scrollContainer.remove();\n }\n return rtlScrollAxisType;\n}\n\nlet shadowDomIsSupported;\n/** Checks whether the user's browser support Shadow DOM. */\nfunction _supportsShadowDom() {\n if (shadowDomIsSupported == null) {\n const head = typeof document !== 'undefined' ? document.head : null;\n shadowDomIsSupported = !!(head && (head.createShadowRoot || head.attachShadow));\n }\n return shadowDomIsSupported;\n}\n/** Gets the shadow root of an element, if supported and the element is inside the Shadow DOM. */\nfunction _getShadowRoot(element) {\n if (_supportsShadowDom()) {\n const rootNode = element.getRootNode ? element.getRootNode() : null;\n // Note that this should be caught by `_supportsShadowDom`, but some\n // teams have been able to hit this code path on unsupported browsers.\n if (typeof ShadowRoot !== 'undefined' && ShadowRoot && rootNode instanceof ShadowRoot) {\n return rootNode;\n }\n }\n return null;\n}\n/**\n * Gets the currently-focused element on the page while\n * also piercing through Shadow DOM boundaries.\n */\nfunction _getFocusedElementPierceShadowDom() {\n let activeElement = typeof document !== 'undefined' && document\n ? document.activeElement\n : null;\n while (activeElement && activeElement.shadowRoot) {\n const newActiveElement = activeElement.shadowRoot.activeElement;\n if (newActiveElement === activeElement) {\n break;\n }\n else {\n activeElement = newActiveElement;\n }\n }\n return activeElement;\n}\n/** Gets the target of an event while accounting for Shadow DOM. */\nfunction _getEventTarget(event) {\n // If an event is bound outside the Shadow DOM, the `event.target` will\n // point to the shadow root so we have to use `composedPath` instead.\n return (event.composedPath ? event.composedPath()[0] : event.target);\n}\n\n/** Gets whether the code is currently running in a test environment. */\nfunction _isTestEnvironment() {\n // We can't use `declare const` because it causes conflicts inside Google with the real typings\n // for these symbols and we can't read them off the global object, because they don't appear to\n // be attached there for some runners like Jest.\n // (see: https://github.com/angular/components/issues/23365#issuecomment-938146643)\n return (\n // @ts-ignore\n (typeof __karma__ !== 'undefined' && !!__karma__) ||\n // @ts-ignore\n (typeof jasmine !== 'undefined' && !!jasmine) ||\n // @ts-ignore\n (typeof jest !== 'undefined' && !!jest) ||\n // @ts-ignore\n (typeof Mocha !== 'undefined' && !!Mocha));\n}\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { Platform, PlatformModule, RtlScrollAxisType, _getEventTarget, _getFocusedElementPierceShadowDom, _getShadowRoot, _isTestEnvironment, _supportsShadowDom, getRtlScrollAxisType, getSupportedInputTypes, normalizePassiveListenerOptions, supportsPassiveEventListeners, supportsScrollBehavior };\n","import * as i0 from '@angular/core';\nimport { ElementRef, Injector, Directive, EventEmitter, Inject, Input, Output, NgModule } from '@angular/core';\nimport { DOCUMENT } from '@angular/common';\n\n/**\n * Throws an exception when attempting to attach a null portal to a host.\n * @docs-private\n */\nfunction throwNullPortalError() {\n throw Error('Must provide a portal to attach');\n}\n/**\n * Throws an exception when attempting to attach a portal to a host that is already attached.\n * @docs-private\n */\nfunction throwPortalAlreadyAttachedError() {\n throw Error('Host already has a portal attached');\n}\n/**\n * Throws an exception when attempting to attach a portal to an already-disposed host.\n * @docs-private\n */\nfunction throwPortalOutletAlreadyDisposedError() {\n throw Error('This PortalOutlet has already been disposed');\n}\n/**\n * Throws an exception when attempting to attach an unknown portal type.\n * @docs-private\n */\nfunction throwUnknownPortalTypeError() {\n throw Error('Attempting to attach an unknown Portal type. BasePortalOutlet accepts either ' +\n 'a ComponentPortal or a TemplatePortal.');\n}\n/**\n * Throws an exception when attempting to attach a portal to a null host.\n * @docs-private\n */\nfunction throwNullPortalOutletError() {\n throw Error('Attempting to attach a portal to a null PortalOutlet');\n}\n/**\n * Throws an exception when attempting to detach a portal that is not attached.\n * @docs-private\n */\nfunction throwNoPortalAttachedError() {\n throw Error('Attempting to detach a portal that is not attached to a host');\n}\n\n/**\n * A `Portal` is something that you want to render somewhere else.\n * It can be attach to / detached from a `PortalOutlet`.\n */\nclass Portal {\n /** Attach this portal to a host. */\n attach(host) {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (host == null) {\n throwNullPortalOutletError();\n }\n if (host.hasAttached()) {\n throwPortalAlreadyAttachedError();\n }\n }\n this._attachedHost = host;\n return host.attach(this);\n }\n /** Detach this portal from its host */\n detach() {\n let host = this._attachedHost;\n if (host != null) {\n this._attachedHost = null;\n host.detach();\n }\n else if (typeof ngDevMode === 'undefined' || ngDevMode) {\n throwNoPortalAttachedError();\n }\n }\n /** Whether this portal is attached to a host. */\n get isAttached() {\n return this._attachedHost != null;\n }\n /**\n * Sets the PortalOutlet reference without performing `attach()`. This is used directly by\n * the PortalOutlet when it is performing an `attach()` or `detach()`.\n */\n setAttachedHost(host) {\n this._attachedHost = host;\n }\n}\n/**\n * A `ComponentPortal` is a portal that instantiates some Component upon attachment.\n */\nclass ComponentPortal extends Portal {\n constructor(component, viewContainerRef, injector, componentFactoryResolver, projectableNodes) {\n super();\n this.component = component;\n this.viewContainerRef = viewContainerRef;\n this.injector = injector;\n this.componentFactoryResolver = componentFactoryResolver;\n this.projectableNodes = projectableNodes;\n }\n}\n/**\n * A `TemplatePortal` is a portal that represents some embedded template (TemplateRef).\n */\nclass TemplatePortal extends Portal {\n constructor(\n /** The embedded template that will be used to instantiate an embedded View in the host. */\n templateRef, \n /** Reference to the ViewContainer into which the template will be stamped out. */\n viewContainerRef, \n /** Contextual data to be passed in to the embedded view. */\n context, \n /** The injector to use for the embedded view. */\n injector) {\n super();\n this.templateRef = templateRef;\n this.viewContainerRef = viewContainerRef;\n this.context = context;\n this.injector = injector;\n }\n get origin() {\n return this.templateRef.elementRef;\n }\n /**\n * Attach the portal to the provided `PortalOutlet`.\n * When a context is provided it will override the `context` property of the `TemplatePortal`\n * instance.\n */\n attach(host, context = this.context) {\n this.context = context;\n return super.attach(host);\n }\n detach() {\n this.context = undefined;\n return super.detach();\n }\n}\n/**\n * A `DomPortal` is a portal whose DOM element will be taken from its current position\n * in the DOM and moved into a portal outlet, when it is attached. On detach, the content\n * will be restored to its original position.\n */\nclass DomPortal extends Portal {\n constructor(element) {\n super();\n this.element = element instanceof ElementRef ? element.nativeElement : element;\n }\n}\n/**\n * Partial implementation of PortalOutlet that handles attaching\n * ComponentPortal and TemplatePortal.\n */\nclass BasePortalOutlet {\n constructor() {\n /** Whether this host has already been permanently disposed. */\n this._isDisposed = false;\n // @breaking-change 10.0.0 `attachDomPortal` to become a required abstract method.\n this.attachDomPortal = null;\n }\n /** Whether this host has an attached portal. */\n hasAttached() {\n return !!this._attachedPortal;\n }\n /** Attaches a portal. */\n attach(portal) {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (!portal) {\n throwNullPortalError();\n }\n if (this.hasAttached()) {\n throwPortalAlreadyAttachedError();\n }\n if (this._isDisposed) {\n throwPortalOutletAlreadyDisposedError();\n }\n }\n if (portal instanceof ComponentPortal) {\n this._attachedPortal = portal;\n return this.attachComponentPortal(portal);\n }\n else if (portal instanceof TemplatePortal) {\n this._attachedPortal = portal;\n return this.attachTemplatePortal(portal);\n // @breaking-change 10.0.0 remove null check for `this.attachDomPortal`.\n }\n else if (this.attachDomPortal && portal instanceof DomPortal) {\n this._attachedPortal = portal;\n return this.attachDomPortal(portal);\n }\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n throwUnknownPortalTypeError();\n }\n }\n /** Detaches a previously attached portal. */\n detach() {\n if (this._attachedPortal) {\n this._attachedPortal.setAttachedHost(null);\n this._attachedPortal = null;\n }\n this._invokeDisposeFn();\n }\n /** Permanently dispose of this portal host. */\n dispose() {\n if (this.hasAttached()) {\n this.detach();\n }\n this._invokeDisposeFn();\n this._isDisposed = true;\n }\n /** @docs-private */\n setDisposeFn(fn) {\n this._disposeFn = fn;\n }\n _invokeDisposeFn() {\n if (this._disposeFn) {\n this._disposeFn();\n this._disposeFn = null;\n }\n }\n}\n/**\n * @deprecated Use `BasePortalOutlet` instead.\n * @breaking-change 9.0.0\n */\nclass BasePortalHost extends BasePortalOutlet {\n}\n\n/**\n * A PortalOutlet for attaching portals to an arbitrary DOM element outside of the Angular\n * application context.\n */\nclass DomPortalOutlet extends BasePortalOutlet {\n /**\n * @param outletElement Element into which the content is projected.\n * @param _componentFactoryResolver Used to resolve the component factory.\n * Only required when attaching component portals.\n * @param _appRef Reference to the application. Only used in component portals when there\n * is no `ViewContainerRef` available.\n * @param _defaultInjector Injector to use as a fallback when the portal being attached doesn't\n * have one. Only used for component portals.\n * @param _document Reference to the document. Used when attaching a DOM portal. Will eventually\n * become a required parameter.\n */\n constructor(\n /** Element into which the content is projected. */\n outletElement, _componentFactoryResolver, _appRef, _defaultInjector, \n /**\n * @deprecated `_document` Parameter to be made required.\n * @breaking-change 10.0.0\n */\n _document) {\n super();\n this.outletElement = outletElement;\n this._componentFactoryResolver = _componentFactoryResolver;\n this._appRef = _appRef;\n this._defaultInjector = _defaultInjector;\n /**\n * Attaches a DOM portal by transferring its content into the outlet.\n * @param portal Portal to be attached.\n * @deprecated To be turned into a method.\n * @breaking-change 10.0.0\n */\n this.attachDomPortal = (portal) => {\n // @breaking-change 10.0.0 Remove check and error once the\n // `_document` constructor parameter is required.\n if (!this._document && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('Cannot attach DOM portal without _document constructor parameter');\n }\n const element = portal.element;\n if (!element.parentNode && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('DOM portal content must be attached to a parent node.');\n }\n // Anchor used to save the element's previous position so\n // that we can restore it when the portal is detached.\n const anchorNode = this._document.createComment('dom-portal');\n element.parentNode.insertBefore(anchorNode, element);\n this.outletElement.appendChild(element);\n this._attachedPortal = portal;\n super.setDisposeFn(() => {\n // We can't use `replaceWith` here because IE doesn't support it.\n if (anchorNode.parentNode) {\n anchorNode.parentNode.replaceChild(element, anchorNode);\n }\n });\n };\n this._document = _document;\n }\n /**\n * Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.\n * @param portal Portal to be attached\n * @returns Reference to the created component.\n */\n attachComponentPortal(portal) {\n const resolver = (portal.componentFactoryResolver || this._componentFactoryResolver);\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !resolver) {\n throw Error('Cannot attach component portal to outlet without a ComponentFactoryResolver.');\n }\n const componentFactory = resolver.resolveComponentFactory(portal.component);\n let componentRef;\n // If the portal specifies a ViewContainerRef, we will use that as the attachment point\n // for the component (in terms of Angular's component tree, not rendering).\n // When the ViewContainerRef is missing, we use the factory to create the component directly\n // and then manually attach the view to the application.\n if (portal.viewContainerRef) {\n componentRef = portal.viewContainerRef.createComponent(componentFactory, portal.viewContainerRef.length, portal.injector || portal.viewContainerRef.injector, portal.projectableNodes || undefined);\n this.setDisposeFn(() => componentRef.destroy());\n }\n else {\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !this._appRef) {\n throw Error('Cannot attach component portal to outlet without an ApplicationRef.');\n }\n componentRef = componentFactory.create(portal.injector || this._defaultInjector || Injector.NULL);\n this._appRef.attachView(componentRef.hostView);\n this.setDisposeFn(() => {\n // Verify that the ApplicationRef has registered views before trying to detach a host view.\n // This check also protects the `detachView` from being called on a destroyed ApplicationRef.\n if (this._appRef.viewCount > 0) {\n this._appRef.detachView(componentRef.hostView);\n }\n componentRef.destroy();\n });\n }\n // At this point the component has been instantiated, so we move it to the location in the DOM\n // where we want it to be rendered.\n this.outletElement.appendChild(this._getComponentRootNode(componentRef));\n this._attachedPortal = portal;\n return componentRef;\n }\n /**\n * Attaches a template portal to the DOM as an embedded view.\n * @param portal Portal to be attached.\n * @returns Reference to the created embedded view.\n */\n attachTemplatePortal(portal) {\n let viewContainer = portal.viewContainerRef;\n let viewRef = viewContainer.createEmbeddedView(portal.templateRef, portal.context, {\n injector: portal.injector,\n });\n // The method `createEmbeddedView` will add the view as a child of the viewContainer.\n // But for the DomPortalOutlet the view can be added everywhere in the DOM\n // (e.g Overlay Container) To move the view to the specified host element. We just\n // re-append the existing root nodes.\n viewRef.rootNodes.forEach(rootNode => this.outletElement.appendChild(rootNode));\n // Note that we want to detect changes after the nodes have been moved so that\n // any directives inside the portal that are looking at the DOM inside a lifecycle\n // hook won't be invoked too early.\n viewRef.detectChanges();\n this.setDisposeFn(() => {\n let index = viewContainer.indexOf(viewRef);\n if (index !== -1) {\n viewContainer.remove(index);\n }\n });\n this._attachedPortal = portal;\n // TODO(jelbourn): Return locals from view.\n return viewRef;\n }\n /**\n * Clears out a portal from the DOM.\n */\n dispose() {\n super.dispose();\n this.outletElement.remove();\n }\n /** Gets the root HTMLElement for an instantiated component. */\n _getComponentRootNode(componentRef) {\n return componentRef.hostView.rootNodes[0];\n }\n}\n/**\n * @deprecated Use `DomPortalOutlet` instead.\n * @breaking-change 9.0.0\n */\nclass DomPortalHost extends DomPortalOutlet {\n}\n\n/**\n * Directive version of a `TemplatePortal`. Because the directive *is* a TemplatePortal,\n * the directive instance itself can be attached to a host, enabling declarative use of portals.\n */\nclass CdkPortal extends TemplatePortal {\n constructor(templateRef, viewContainerRef) {\n super(templateRef, viewContainerRef);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkPortal, deps: [{ token: i0.TemplateRef }, { token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: CdkPortal, isStandalone: true, selector: \"[cdkPortal]\", exportAs: [\"cdkPortal\"], usesInheritance: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkPortal, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkPortal]',\n exportAs: 'cdkPortal',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.TemplateRef }, { type: i0.ViewContainerRef }] });\n/**\n * @deprecated Use `CdkPortal` instead.\n * @breaking-change 9.0.0\n */\nclass TemplatePortalDirective extends CdkPortal {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: TemplatePortalDirective, deps: null, target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: TemplatePortalDirective, isStandalone: true, selector: \"[cdk-portal], [portal]\", providers: [\n {\n provide: CdkPortal,\n useExisting: TemplatePortalDirective,\n },\n ], exportAs: [\"cdkPortal\"], usesInheritance: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: TemplatePortalDirective, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdk-portal], [portal]',\n exportAs: 'cdkPortal',\n providers: [\n {\n provide: CdkPortal,\n useExisting: TemplatePortalDirective,\n },\n ],\n standalone: true,\n }]\n }] });\n/**\n * Directive version of a PortalOutlet. Because the directive *is* a PortalOutlet, portals can be\n * directly attached to it, enabling declarative use.\n *\n * Usage:\n * ``\n */\nclass CdkPortalOutlet extends BasePortalOutlet {\n constructor(_componentFactoryResolver, _viewContainerRef, \n /**\n * @deprecated `_document` parameter to be made required.\n * @breaking-change 9.0.0\n */\n _document) {\n super();\n this._componentFactoryResolver = _componentFactoryResolver;\n this._viewContainerRef = _viewContainerRef;\n /** Whether the portal component is initialized. */\n this._isInitialized = false;\n /** Emits when a portal is attached to the outlet. */\n this.attached = new EventEmitter();\n /**\n * Attaches the given DomPortal to this PortalHost by moving all of the portal content into it.\n * @param portal Portal to be attached.\n * @deprecated To be turned into a method.\n * @breaking-change 10.0.0\n */\n this.attachDomPortal = (portal) => {\n // @breaking-change 9.0.0 Remove check and error once the\n // `_document` constructor parameter is required.\n if (!this._document && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('Cannot attach DOM portal without _document constructor parameter');\n }\n const element = portal.element;\n if (!element.parentNode && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('DOM portal content must be attached to a parent node.');\n }\n // Anchor used to save the element's previous position so\n // that we can restore it when the portal is detached.\n const anchorNode = this._document.createComment('dom-portal');\n portal.setAttachedHost(this);\n element.parentNode.insertBefore(anchorNode, element);\n this._getRootNode().appendChild(element);\n this._attachedPortal = portal;\n super.setDisposeFn(() => {\n if (anchorNode.parentNode) {\n anchorNode.parentNode.replaceChild(element, anchorNode);\n }\n });\n };\n this._document = _document;\n }\n /** Portal associated with the Portal outlet. */\n get portal() {\n return this._attachedPortal;\n }\n set portal(portal) {\n // Ignore the cases where the `portal` is set to a falsy value before the lifecycle hooks have\n // run. This handles the cases where the user might do something like `
`\n // and attach a portal programmatically in the parent component. When Angular does the first CD\n // round, it will fire the setter with empty string, causing the user's content to be cleared.\n if (this.hasAttached() && !portal && !this._isInitialized) {\n return;\n }\n if (this.hasAttached()) {\n super.detach();\n }\n if (portal) {\n super.attach(portal);\n }\n this._attachedPortal = portal || null;\n }\n /** Component or view reference that is attached to the portal. */\n get attachedRef() {\n return this._attachedRef;\n }\n ngOnInit() {\n this._isInitialized = true;\n }\n ngOnDestroy() {\n super.dispose();\n this._attachedRef = this._attachedPortal = null;\n }\n /**\n * Attach the given ComponentPortal to this PortalOutlet using the ComponentFactoryResolver.\n *\n * @param portal Portal to be attached to the portal outlet.\n * @returns Reference to the created component.\n */\n attachComponentPortal(portal) {\n portal.setAttachedHost(this);\n // If the portal specifies an origin, use that as the logical location of the component\n // in the application tree. Otherwise use the location of this PortalOutlet.\n const viewContainerRef = portal.viewContainerRef != null ? portal.viewContainerRef : this._viewContainerRef;\n const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;\n const componentFactory = resolver.resolveComponentFactory(portal.component);\n const ref = viewContainerRef.createComponent(componentFactory, viewContainerRef.length, portal.injector || viewContainerRef.injector, portal.projectableNodes || undefined);\n // If we're using a view container that's different from the injected one (e.g. when the portal\n // specifies its own) we need to move the component into the outlet, otherwise it'll be rendered\n // inside of the alternate view container.\n if (viewContainerRef !== this._viewContainerRef) {\n this._getRootNode().appendChild(ref.hostView.rootNodes[0]);\n }\n super.setDisposeFn(() => ref.destroy());\n this._attachedPortal = portal;\n this._attachedRef = ref;\n this.attached.emit(ref);\n return ref;\n }\n /**\n * Attach the given TemplatePortal to this PortalHost as an embedded View.\n * @param portal Portal to be attached.\n * @returns Reference to the created embedded view.\n */\n attachTemplatePortal(portal) {\n portal.setAttachedHost(this);\n const viewRef = this._viewContainerRef.createEmbeddedView(portal.templateRef, portal.context, {\n injector: portal.injector,\n });\n super.setDisposeFn(() => this._viewContainerRef.clear());\n this._attachedPortal = portal;\n this._attachedRef = viewRef;\n this.attached.emit(viewRef);\n return viewRef;\n }\n /** Gets the root node of the portal outlet. */\n _getRootNode() {\n const nativeElement = this._viewContainerRef.element.nativeElement;\n // The directive could be set on a template which will result in a comment\n // node being the root. Use the comment's parent node if that is the case.\n return (nativeElement.nodeType === nativeElement.ELEMENT_NODE\n ? nativeElement\n : nativeElement.parentNode);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkPortalOutlet, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.ViewContainerRef }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: CdkPortalOutlet, isStandalone: true, selector: \"[cdkPortalOutlet]\", inputs: { portal: [\"cdkPortalOutlet\", \"portal\"] }, outputs: { attached: \"attached\" }, exportAs: [\"cdkPortalOutlet\"], usesInheritance: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: CdkPortalOutlet, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkPortalOutlet]',\n exportAs: 'cdkPortalOutlet',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ComponentFactoryResolver }, { type: i0.ViewContainerRef }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }], propDecorators: { portal: [{\n type: Input,\n args: ['cdkPortalOutlet']\n }], attached: [{\n type: Output\n }] } });\n/**\n * @deprecated Use `CdkPortalOutlet` instead.\n * @breaking-change 9.0.0\n */\nclass PortalHostDirective extends CdkPortalOutlet {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalHostDirective, deps: null, target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.2.0\", type: PortalHostDirective, isStandalone: true, selector: \"[cdkPortalHost], [portalHost]\", inputs: { portal: [\"cdkPortalHost\", \"portal\"] }, providers: [\n {\n provide: CdkPortalOutlet,\n useExisting: PortalHostDirective,\n },\n ], exportAs: [\"cdkPortalHost\"], usesInheritance: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalHostDirective, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkPortalHost], [portalHost]',\n exportAs: 'cdkPortalHost',\n inputs: [{ name: 'portal', alias: 'cdkPortalHost' }],\n providers: [\n {\n provide: CdkPortalOutlet,\n useExisting: PortalHostDirective,\n },\n ],\n standalone: true,\n }]\n }] });\nclass PortalModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalModule, imports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective], exports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.2.0\", ngImport: i0, type: PortalModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective],\n exports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective],\n }]\n }] });\n\n/**\n * Custom injector to be used when providing custom\n * injection tokens to components inside a portal.\n * @docs-private\n * @deprecated Use `Injector.create` instead.\n * @breaking-change 11.0.0\n */\nclass PortalInjector {\n constructor(_parentInjector, _customTokens) {\n this._parentInjector = _parentInjector;\n this._customTokens = _customTokens;\n }\n get(token, notFoundValue) {\n const value = this._customTokens.get(token);\n if (typeof value !== 'undefined') {\n return value;\n }\n return this._parentInjector.get(token, notFoundValue);\n }\n}\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BasePortalHost, BasePortalOutlet, CdkPortal, CdkPortalOutlet, ComponentPortal, DomPortal, DomPortalHost, DomPortalOutlet, Portal, PortalHostDirective, PortalInjector, PortalModule, TemplatePortal, TemplatePortalDirective };\n","/**\n * @license Angular v17.1.0\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { InjectionToken, inject, Injectable, Optional, Inject, EventEmitter, ɵɵinject, ɵfindLocaleData, ɵLocaleDataIndex, ɵgetLocaleCurrencyCode, ɵgetLocalePluralCase, LOCALE_ID, ɵregisterLocaleData, ɵstringify, Directive, Input, createNgModule, NgModuleRef, ɵRuntimeError, ɵformatRuntimeError, Host, Attribute, RendererStyleFlags2, untracked, ɵisPromise, ɵisSubscribable, Pipe, DEFAULT_CURRENCY_CODE, NgModule, Version, ɵɵdefineInjectable, PLATFORM_ID, ɵIMAGE_CONFIG, Renderer2, ElementRef, Injector, ɵperformanceMarkFeature, NgZone, numberAttribute, booleanAttribute, ɵIMAGE_CONFIG_DEFAULTS, ɵunwrapSafeValue } from '@angular/core';\nexport { ɵIMAGE_CONFIG as IMAGE_CONFIG } from '@angular/core';\n\nlet _DOM = null;\nfunction getDOM() {\n return _DOM;\n}\nfunction setRootDomAdapter(adapter) {\n if (!_DOM) {\n _DOM = adapter;\n }\n}\n/* tslint:disable:requireParameterType */\n/**\n * Provides DOM operations in an environment-agnostic way.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\nclass DomAdapter {\n}\n\n/**\n * A DI Token representing the main rendering context.\n * In a browser and SSR this is the DOM Document.\n * When using SSR, that document is created by [Domino](https://github.com/angular/domino).\n *\n * @publicApi\n */\nconst DOCUMENT = new InjectionToken('DocumentToken');\n\n/**\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n *\n * `PlatformLocation` encapsulates all calls to DOM APIs, which allows the Router to be\n * platform-agnostic.\n * This means that we can have different implementation of `PlatformLocation` for the different\n * platforms that Angular supports. For example, `@angular/platform-browser` provides an\n * implementation specific to the browser environment, while `@angular/platform-server` provides\n * one suitable for use with server-side rendering.\n *\n * The `PlatformLocation` class is used directly by all implementations of {@link LocationStrategy}\n * when they need to interact with the DOM APIs like pushState, popState, etc.\n *\n * {@link LocationStrategy} in turn is used by the {@link Location} service which is used directly\n * by the {@link Router} in order to navigate between routes. Since all interactions between {@link\n * Router} /\n * {@link Location} / {@link LocationStrategy} and DOM APIs flow through the `PlatformLocation`\n * class, they are all platform-agnostic.\n *\n * @publicApi\n */\nclass PlatformLocation {\n historyGo(relativePosition) {\n throw new Error('Not implemented');\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PlatformLocation, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PlatformLocation, providedIn: 'platform', useFactory: () => inject(BrowserPlatformLocation) }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PlatformLocation, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'platform', useFactory: () => inject(BrowserPlatformLocation) }]\n }] });\n/**\n * @description\n * Indicates when a location is initialized.\n *\n * @publicApi\n */\nconst LOCATION_INITIALIZED = new InjectionToken('Location Initialized');\n/**\n * `PlatformLocation` encapsulates all of the direct calls to platform APIs.\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n *\n * @publicApi\n */\nclass BrowserPlatformLocation extends PlatformLocation {\n constructor() {\n super();\n this._doc = inject(DOCUMENT);\n this._location = window.location;\n this._history = window.history;\n }\n getBaseHrefFromDOM() {\n return getDOM().getBaseHref(this._doc);\n }\n onPopState(fn) {\n const window = getDOM().getGlobalEventTarget(this._doc, 'window');\n window.addEventListener('popstate', fn, false);\n return () => window.removeEventListener('popstate', fn);\n }\n onHashChange(fn) {\n const window = getDOM().getGlobalEventTarget(this._doc, 'window');\n window.addEventListener('hashchange', fn, false);\n return () => window.removeEventListener('hashchange', fn);\n }\n get href() {\n return this._location.href;\n }\n get protocol() {\n return this._location.protocol;\n }\n get hostname() {\n return this._location.hostname;\n }\n get port() {\n return this._location.port;\n }\n get pathname() {\n return this._location.pathname;\n }\n get search() {\n return this._location.search;\n }\n get hash() {\n return this._location.hash;\n }\n set pathname(newPath) {\n this._location.pathname = newPath;\n }\n pushState(state, title, url) {\n this._history.pushState(state, title, url);\n }\n replaceState(state, title, url) {\n this._history.replaceState(state, title, url);\n }\n forward() {\n this._history.forward();\n }\n back() {\n this._history.back();\n }\n historyGo(relativePosition = 0) {\n this._history.go(relativePosition);\n }\n getState() {\n return this._history.state;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: BrowserPlatformLocation, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: BrowserPlatformLocation, providedIn: 'platform', useFactory: () => new BrowserPlatformLocation() }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: BrowserPlatformLocation, decorators: [{\n type: Injectable,\n args: [{\n providedIn: 'platform',\n useFactory: () => new BrowserPlatformLocation(),\n }]\n }], ctorParameters: () => [] });\n\n/**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start URL string\n * @param end URL string\n *\n *\n * @returns The joined URL string.\n */\nfunction joinWithSlash(start, end) {\n if (start.length == 0) {\n return end;\n }\n if (end.length == 0) {\n return start;\n }\n let slashes = 0;\n if (start.endsWith('/')) {\n slashes++;\n }\n if (end.startsWith('/')) {\n slashes++;\n }\n if (slashes == 2) {\n return start + end.substring(1);\n }\n if (slashes == 1) {\n return start + end;\n }\n return start + '/' + end;\n}\n/**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\nfunction stripTrailingSlash(url) {\n const match = url.match(/#|\\?|$/);\n const pathEndIdx = match && match.index || url.length;\n const droppedSlashIdx = pathEndIdx - (url[pathEndIdx - 1] === '/' ? 1 : 0);\n return url.slice(0, droppedSlashIdx) + url.slice(pathEndIdx);\n}\n/**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\nfunction normalizeQueryParams(params) {\n return params && params[0] !== '?' ? '?' + params : params;\n}\n\n/**\n * Enables the `Location` service to read route state from the browser's URL.\n * Angular provides two strategies:\n * `HashLocationStrategy` and `PathLocationStrategy`.\n *\n * Applications should use the `Router` or `Location` services to\n * interact with application route state.\n *\n * For instance, `HashLocationStrategy` produces URLs like\n * http://example.com#/foo,\n * and `PathLocationStrategy` produces\n * http://example.com/foo as an equivalent URL.\n *\n * See these two classes for more.\n *\n * @publicApi\n */\nclass LocationStrategy {\n historyGo(relativePosition) {\n throw new Error('Not implemented');\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LocationStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LocationStrategy, providedIn: 'root', useFactory: () => inject(PathLocationStrategy) }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LocationStrategy, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root', useFactory: () => inject(PathLocationStrategy) }]\n }] });\n/**\n * A predefined [DI token](guide/glossary#di-token) for the base href\n * to be used with the `PathLocationStrategy`.\n * The base href is the URL prefix that should be preserved when generating\n * and recognizing URLs.\n *\n * @usageNotes\n *\n * The following example shows how to use this token to configure the root app injector\n * with a base href value, so that the DI framework can supply the dependency anywhere in the app.\n *\n * ```typescript\n * import {NgModule} from '@angular/core';\n * import {APP_BASE_HREF} from '@angular/common';\n *\n * @NgModule({\n * providers: [{provide: APP_BASE_HREF, useValue: '/my/app'}]\n * })\n * class AppModule {}\n * ```\n *\n * @publicApi\n */\nconst APP_BASE_HREF = new InjectionToken('appBaseHref');\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [path](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax) of the\n * browser's URL.\n *\n * If you're using `PathLocationStrategy`, you may provide a {@link APP_BASE_HREF}\n * or add a `` element to the document to override the default.\n *\n * For instance, if you provide an `APP_BASE_HREF` of `'/my/app/'` and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`. To ensure all relative URIs resolve correctly,\n * the `` and/or `APP_BASE_HREF` should end with a `/`.\n *\n * Similarly, if you add `` to the document and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`.\n *\n * Note that when using `PathLocationStrategy`, neither the query nor\n * the fragment in the `` will be preserved, as outlined\n * by the [RFC](https://tools.ietf.org/html/rfc3986#section-5.2.2).\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/path_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\nclass PathLocationStrategy extends LocationStrategy {\n constructor(_platformLocation, href) {\n super();\n this._platformLocation = _platformLocation;\n this._removeListenerFns = [];\n this._baseHref = href ?? this._platformLocation.getBaseHrefFromDOM() ??\n inject(DOCUMENT).location?.origin ?? '';\n }\n /** @nodoc */\n ngOnDestroy() {\n while (this._removeListenerFns.length) {\n this._removeListenerFns.pop()();\n }\n }\n onPopState(fn) {\n this._removeListenerFns.push(this._platformLocation.onPopState(fn), this._platformLocation.onHashChange(fn));\n }\n getBaseHref() {\n return this._baseHref;\n }\n prepareExternalUrl(internal) {\n return joinWithSlash(this._baseHref, internal);\n }\n path(includeHash = false) {\n const pathname = this._platformLocation.pathname + normalizeQueryParams(this._platformLocation.search);\n const hash = this._platformLocation.hash;\n return hash && includeHash ? `${pathname}${hash}` : pathname;\n }\n pushState(state, title, url, queryParams) {\n const externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n this._platformLocation.pushState(state, title, externalUrl);\n }\n replaceState(state, title, url, queryParams) {\n const externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n this._platformLocation.replaceState(state, title, externalUrl);\n }\n forward() {\n this._platformLocation.forward();\n }\n back() {\n this._platformLocation.back();\n }\n getState() {\n return this._platformLocation.getState();\n }\n historyGo(relativePosition = 0) {\n this._platformLocation.historyGo?.(relativePosition);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PathLocationStrategy, deps: [{ token: PlatformLocation }, { token: APP_BASE_HREF, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PathLocationStrategy, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PathLocationStrategy, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [{ type: PlatformLocation }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [APP_BASE_HREF]\n }] }] });\n\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [hash fragment](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax)\n * of the browser's URL.\n *\n * For instance, if you call `location.go('/foo')`, the browser's URL will become\n * `example.com#/foo`.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/hash_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\nclass HashLocationStrategy extends LocationStrategy {\n constructor(_platformLocation, _baseHref) {\n super();\n this._platformLocation = _platformLocation;\n this._baseHref = '';\n this._removeListenerFns = [];\n if (_baseHref != null) {\n this._baseHref = _baseHref;\n }\n }\n /** @nodoc */\n ngOnDestroy() {\n while (this._removeListenerFns.length) {\n this._removeListenerFns.pop()();\n }\n }\n onPopState(fn) {\n this._removeListenerFns.push(this._platformLocation.onPopState(fn), this._platformLocation.onHashChange(fn));\n }\n getBaseHref() {\n return this._baseHref;\n }\n path(includeHash = false) {\n // the hash value is always prefixed with a `#`\n // and if it is empty then it will stay empty\n let path = this._platformLocation.hash;\n if (path == null)\n path = '#';\n return path.length > 0 ? path.substring(1) : path;\n }\n prepareExternalUrl(internal) {\n const url = joinWithSlash(this._baseHref, internal);\n return url.length > 0 ? ('#' + url) : url;\n }\n pushState(state, title, path, queryParams) {\n let url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n if (url.length == 0) {\n url = this._platformLocation.pathname;\n }\n this._platformLocation.pushState(state, title, url);\n }\n replaceState(state, title, path, queryParams) {\n let url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n if (url.length == 0) {\n url = this._platformLocation.pathname;\n }\n this._platformLocation.replaceState(state, title, url);\n }\n forward() {\n this._platformLocation.forward();\n }\n back() {\n this._platformLocation.back();\n }\n getState() {\n return this._platformLocation.getState();\n }\n historyGo(relativePosition = 0) {\n this._platformLocation.historyGo?.(relativePosition);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HashLocationStrategy, deps: [{ token: PlatformLocation }, { token: APP_BASE_HREF, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HashLocationStrategy }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HashLocationStrategy, decorators: [{\n type: Injectable\n }], ctorParameters: () => [{ type: PlatformLocation }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [APP_BASE_HREF]\n }] }] });\n\n/**\n * @description\n *\n * A service that applications can use to interact with a browser's URL.\n *\n * Depending on the `LocationStrategy` used, `Location` persists\n * to the URL's path or the URL's hash segment.\n *\n * @usageNotes\n *\n * It's better to use the `Router.navigate()` service to trigger route changes. Use\n * `Location` only if you need to interact with or create normalized URLs outside of\n * routing.\n *\n * `Location` is responsible for normalizing the URL against the application's base href.\n * A normalized URL is absolute from the URL host, includes the application's base href, and has no\n * trailing slash:\n * - `/my/app/user/123` is normalized\n * - `my/app/user/123` **is not** normalized\n * - `/my/app/user/123/` **is not** normalized\n *\n * ### Example\n *\n * \n *\n * @publicApi\n */\nclass Location {\n constructor(locationStrategy) {\n /** @internal */\n this._subject = new EventEmitter();\n /** @internal */\n this._urlChangeListeners = [];\n /** @internal */\n this._urlChangeSubscription = null;\n this._locationStrategy = locationStrategy;\n const baseHref = this._locationStrategy.getBaseHref();\n // Note: This class's interaction with base HREF does not fully follow the rules\n // outlined in the spec https://www.freesoft.org/CIE/RFC/1808/18.htm.\n // Instead of trying to fix individual bugs with more and more code, we should\n // investigate using the URL constructor and providing the base as a second\n // argument.\n // https://developer.mozilla.org/en-US/docs/Web/API/URL/URL#parameters\n this._basePath = _stripOrigin(stripTrailingSlash(_stripIndexHtml(baseHref)));\n this._locationStrategy.onPopState((ev) => {\n this._subject.emit({\n 'url': this.path(true),\n 'pop': true,\n 'state': ev.state,\n 'type': ev.type,\n });\n });\n }\n /** @nodoc */\n ngOnDestroy() {\n this._urlChangeSubscription?.unsubscribe();\n this._urlChangeListeners = [];\n }\n /**\n * Normalizes the URL path for this location.\n *\n * @param includeHash True to include an anchor fragment in the path.\n *\n * @returns The normalized URL path.\n */\n // TODO: vsavkin. Remove the boolean flag and always include hash once the deprecated router is\n // removed.\n path(includeHash = false) {\n return this.normalize(this._locationStrategy.path(includeHash));\n }\n /**\n * Reports the current state of the location history.\n * @returns The current value of the `history.state` object.\n */\n getState() {\n return this._locationStrategy.getState();\n }\n /**\n * Normalizes the given path and compares to the current normalized path.\n *\n * @param path The given URL path.\n * @param query Query parameters.\n *\n * @returns True if the given URL path is equal to the current normalized path, false\n * otherwise.\n */\n isCurrentPathEqualTo(path, query = '') {\n return this.path() == this.normalize(path + normalizeQueryParams(query));\n }\n /**\n * Normalizes a URL path by stripping any trailing slashes.\n *\n * @param url String representing a URL.\n *\n * @returns The normalized URL string.\n */\n normalize(url) {\n return Location.stripTrailingSlash(_stripBasePath(this._basePath, _stripIndexHtml(url)));\n }\n /**\n * Normalizes an external URL path.\n * If the given URL doesn't begin with a leading slash (`'/'`), adds one\n * before normalizing. Adds a hash if `HashLocationStrategy` is\n * in use, or the `APP_BASE_HREF` if the `PathLocationStrategy` is in use.\n *\n * @param url String representing a URL.\n *\n * @returns A normalized platform-specific URL.\n */\n prepareExternalUrl(url) {\n if (url && url[0] !== '/') {\n url = '/' + url;\n }\n return this._locationStrategy.prepareExternalUrl(url);\n }\n // TODO: rename this method to pushState\n /**\n * Changes the browser's URL to a normalized version of a given URL, and pushes a\n * new item onto the platform's history.\n *\n * @param path URL path to normalize.\n * @param query Query parameters.\n * @param state Location history state.\n *\n */\n go(path, query = '', state = null) {\n this._locationStrategy.pushState(state, '', path, query);\n this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n }\n /**\n * Changes the browser's URL to a normalized version of the given URL, and replaces\n * the top item on the platform's history stack.\n *\n * @param path URL path to normalize.\n * @param query Query parameters.\n * @param state Location history state.\n */\n replaceState(path, query = '', state = null) {\n this._locationStrategy.replaceState(state, '', path, query);\n this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n }\n /**\n * Navigates forward in the platform's history.\n */\n forward() {\n this._locationStrategy.forward();\n }\n /**\n * Navigates back in the platform's history.\n */\n back() {\n this._locationStrategy.back();\n }\n /**\n * Navigate to a specific page from session history, identified by its relative position to the\n * current page.\n *\n * @param relativePosition Position of the target page in the history relative to the current\n * page.\n * A negative value moves backwards, a positive value moves forwards, e.g. `location.historyGo(2)`\n * moves forward two pages and `location.historyGo(-2)` moves back two pages. When we try to go\n * beyond what's stored in the history session, we stay in the current page. Same behaviour occurs\n * when `relativePosition` equals 0.\n * @see https://developer.mozilla.org/en-US/docs/Web/API/History_API#Moving_to_a_specific_point_in_history\n */\n historyGo(relativePosition = 0) {\n this._locationStrategy.historyGo?.(relativePosition);\n }\n /**\n * Registers a URL change listener. Use to catch updates performed by the Angular\n * framework that are not detectible through \"popstate\" or \"hashchange\" events.\n *\n * @param fn The change handler function, which take a URL and a location history state.\n * @returns A function that, when executed, unregisters a URL change listener.\n */\n onUrlChange(fn) {\n this._urlChangeListeners.push(fn);\n if (!this._urlChangeSubscription) {\n this._urlChangeSubscription = this.subscribe(v => {\n this._notifyUrlChangeListeners(v.url, v.state);\n });\n }\n return () => {\n const fnIndex = this._urlChangeListeners.indexOf(fn);\n this._urlChangeListeners.splice(fnIndex, 1);\n if (this._urlChangeListeners.length === 0) {\n this._urlChangeSubscription?.unsubscribe();\n this._urlChangeSubscription = null;\n }\n };\n }\n /** @internal */\n _notifyUrlChangeListeners(url = '', state) {\n this._urlChangeListeners.forEach(fn => fn(url, state));\n }\n /**\n * Subscribes to the platform's `popState` events.\n *\n * Note: `Location.go()` does not trigger the `popState` event in the browser. Use\n * `Location.onUrlChange()` to subscribe to URL changes instead.\n *\n * @param value Event that is triggered when the state history changes.\n * @param exception The exception to throw.\n *\n * @see [onpopstate](https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onpopstate)\n *\n * @returns Subscribed events.\n */\n subscribe(onNext, onThrow, onReturn) {\n return this._subject.subscribe({ next: onNext, error: onThrow, complete: onReturn });\n }\n /**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\n static { this.normalizeQueryParams = normalizeQueryParams; }\n /**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start URL string\n * @param end URL string\n *\n *\n * @returns The joined URL string.\n */\n static { this.joinWithSlash = joinWithSlash; }\n /**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\n static { this.stripTrailingSlash = stripTrailingSlash; }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: Location, deps: [{ token: LocationStrategy }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: Location, providedIn: 'root', useFactory: createLocation }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: Location, decorators: [{\n type: Injectable,\n args: [{\n providedIn: 'root',\n // See #23917\n useFactory: createLocation,\n }]\n }], ctorParameters: () => [{ type: LocationStrategy }] });\nfunction createLocation() {\n return new Location(ɵɵinject(LocationStrategy));\n}\nfunction _stripBasePath(basePath, url) {\n if (!basePath || !url.startsWith(basePath)) {\n return url;\n }\n const strippedUrl = url.substring(basePath.length);\n if (strippedUrl === '' || ['/', ';', '?', '#'].includes(strippedUrl[0])) {\n return strippedUrl;\n }\n return url;\n}\nfunction _stripIndexHtml(url) {\n return url.replace(/\\/index.html$/, '');\n}\nfunction _stripOrigin(baseHref) {\n // DO NOT REFACTOR! Previously, this check looked like this:\n // `/^(https?:)?\\/\\//.test(baseHref)`, but that resulted in\n // syntactically incorrect code after Closure Compiler minification.\n // This was likely caused by a bug in Closure Compiler, but\n // for now, the check is rewritten to use `new RegExp` instead.\n const isAbsoluteUrl = (new RegExp('^(https?:)?//')).test(baseHref);\n if (isAbsoluteUrl) {\n const [, pathname] = baseHref.split(/\\/\\/[^\\/]+/);\n return pathname;\n }\n return baseHref;\n}\n\n/** @internal */\nconst CURRENCIES_EN = { \"ADP\": [undefined, undefined, 0], \"AFN\": [undefined, \"؋\", 0], \"ALL\": [undefined, undefined, 0], \"AMD\": [undefined, \"֏\", 2], \"AOA\": [undefined, \"Kz\"], \"ARS\": [undefined, \"$\"], \"AUD\": [\"A$\", \"$\"], \"AZN\": [undefined, \"₼\"], \"BAM\": [undefined, \"KM\"], \"BBD\": [undefined, \"$\"], \"BDT\": [undefined, \"৳\"], \"BHD\": [undefined, undefined, 3], \"BIF\": [undefined, undefined, 0], \"BMD\": [undefined, \"$\"], \"BND\": [undefined, \"$\"], \"BOB\": [undefined, \"Bs\"], \"BRL\": [\"R$\"], \"BSD\": [undefined, \"$\"], \"BWP\": [undefined, \"P\"], \"BYN\": [undefined, undefined, 2], \"BYR\": [undefined, undefined, 0], \"BZD\": [undefined, \"$\"], \"CAD\": [\"CA$\", \"$\", 2], \"CHF\": [undefined, undefined, 2], \"CLF\": [undefined, undefined, 4], \"CLP\": [undefined, \"$\", 0], \"CNY\": [\"CN¥\", \"¥\"], \"COP\": [undefined, \"$\", 2], \"CRC\": [undefined, \"₡\", 2], \"CUC\": [undefined, \"$\"], \"CUP\": [undefined, \"$\"], \"CZK\": [undefined, \"Kč\", 2], \"DJF\": [undefined, undefined, 0], \"DKK\": [undefined, \"kr\", 2], \"DOP\": [undefined, \"$\"], \"EGP\": [undefined, \"E£\"], \"ESP\": [undefined, \"₧\", 0], \"EUR\": [\"€\"], \"FJD\": [undefined, \"$\"], \"FKP\": [undefined, \"£\"], \"GBP\": [\"£\"], \"GEL\": [undefined, \"₾\"], \"GHS\": [undefined, \"GH₵\"], \"GIP\": [undefined, \"£\"], \"GNF\": [undefined, \"FG\", 0], \"GTQ\": [undefined, \"Q\"], \"GYD\": [undefined, \"$\", 2], \"HKD\": [\"HK$\", \"$\"], \"HNL\": [undefined, \"L\"], \"HRK\": [undefined, \"kn\"], \"HUF\": [undefined, \"Ft\", 2], \"IDR\": [undefined, \"Rp\", 2], \"ILS\": [\"₪\"], \"INR\": [\"₹\"], \"IQD\": [undefined, undefined, 0], \"IRR\": [undefined, undefined, 0], \"ISK\": [undefined, \"kr\", 0], \"ITL\": [undefined, undefined, 0], \"JMD\": [undefined, \"$\"], \"JOD\": [undefined, undefined, 3], \"JPY\": [\"¥\", undefined, 0], \"KHR\": [undefined, \"៛\"], \"KMF\": [undefined, \"CF\", 0], \"KPW\": [undefined, \"₩\", 0], \"KRW\": [\"₩\", undefined, 0], \"KWD\": [undefined, undefined, 3], \"KYD\": [undefined, \"$\"], \"KZT\": [undefined, \"₸\"], \"LAK\": [undefined, \"₭\", 0], \"LBP\": [undefined, \"L£\", 0], \"LKR\": [undefined, \"Rs\"], \"LRD\": [undefined, \"$\"], \"LTL\": [undefined, \"Lt\"], \"LUF\": [undefined, undefined, 0], \"LVL\": [undefined, \"Ls\"], \"LYD\": [undefined, undefined, 3], \"MGA\": [undefined, \"Ar\", 0], \"MGF\": [undefined, undefined, 0], \"MMK\": [undefined, \"K\", 0], \"MNT\": [undefined, \"₮\", 2], \"MRO\": [undefined, undefined, 0], \"MUR\": [undefined, \"Rs\", 2], \"MXN\": [\"MX$\", \"$\"], \"MYR\": [undefined, \"RM\"], \"NAD\": [undefined, \"$\"], \"NGN\": [undefined, \"₦\"], \"NIO\": [undefined, \"C$\"], \"NOK\": [undefined, \"kr\", 2], \"NPR\": [undefined, \"Rs\"], \"NZD\": [\"NZ$\", \"$\"], \"OMR\": [undefined, undefined, 3], \"PHP\": [\"₱\"], \"PKR\": [undefined, \"Rs\", 2], \"PLN\": [undefined, \"zł\"], \"PYG\": [undefined, \"₲\", 0], \"RON\": [undefined, \"lei\"], \"RSD\": [undefined, undefined, 0], \"RUB\": [undefined, \"₽\"], \"RWF\": [undefined, \"RF\", 0], \"SBD\": [undefined, \"$\"], \"SEK\": [undefined, \"kr\", 2], \"SGD\": [undefined, \"$\"], \"SHP\": [undefined, \"£\"], \"SLE\": [undefined, undefined, 2], \"SLL\": [undefined, undefined, 0], \"SOS\": [undefined, undefined, 0], \"SRD\": [undefined, \"$\"], \"SSP\": [undefined, \"£\"], \"STD\": [undefined, undefined, 0], \"STN\": [undefined, \"Db\"], \"SYP\": [undefined, \"£\", 0], \"THB\": [undefined, \"฿\"], \"TMM\": [undefined, undefined, 0], \"TND\": [undefined, undefined, 3], \"TOP\": [undefined, \"T$\"], \"TRL\": [undefined, undefined, 0], \"TRY\": [undefined, \"₺\"], \"TTD\": [undefined, \"$\"], \"TWD\": [\"NT$\", \"$\", 2], \"TZS\": [undefined, undefined, 2], \"UAH\": [undefined, \"₴\"], \"UGX\": [undefined, undefined, 0], \"USD\": [\"$\"], \"UYI\": [undefined, undefined, 0], \"UYU\": [undefined, \"$\"], \"UYW\": [undefined, undefined, 4], \"UZS\": [undefined, undefined, 2], \"VEF\": [undefined, \"Bs\", 2], \"VND\": [\"₫\", undefined, 0], \"VUV\": [undefined, undefined, 0], \"XAF\": [\"FCFA\", undefined, 0], \"XCD\": [\"EC$\", \"$\"], \"XOF\": [\"F CFA\", undefined, 0], \"XPF\": [\"CFPF\", undefined, 0], \"XXX\": [\"¤\"], \"YER\": [undefined, undefined, 0], \"ZAR\": [undefined, \"R\"], \"ZMK\": [undefined, undefined, 0], \"ZMW\": [undefined, \"ZK\"], \"ZWD\": [undefined, undefined, 0] };\n\n/**\n * Format styles that can be used to represent numbers.\n * @see {@link getLocaleNumberFormat}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nvar NumberFormatStyle;\n(function (NumberFormatStyle) {\n NumberFormatStyle[NumberFormatStyle[\"Decimal\"] = 0] = \"Decimal\";\n NumberFormatStyle[NumberFormatStyle[\"Percent\"] = 1] = \"Percent\";\n NumberFormatStyle[NumberFormatStyle[\"Currency\"] = 2] = \"Currency\";\n NumberFormatStyle[NumberFormatStyle[\"Scientific\"] = 3] = \"Scientific\";\n})(NumberFormatStyle || (NumberFormatStyle = {}));\n/**\n * Plurality cases used for translating plurals to different languages.\n *\n * @see {@link NgPlural}\n * @see {@link NgPluralCase}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nvar Plural;\n(function (Plural) {\n Plural[Plural[\"Zero\"] = 0] = \"Zero\";\n Plural[Plural[\"One\"] = 1] = \"One\";\n Plural[Plural[\"Two\"] = 2] = \"Two\";\n Plural[Plural[\"Few\"] = 3] = \"Few\";\n Plural[Plural[\"Many\"] = 4] = \"Many\";\n Plural[Plural[\"Other\"] = 5] = \"Other\";\n})(Plural || (Plural = {}));\n/**\n * Context-dependant translation forms for strings.\n * Typically the standalone version is for the nominative form of the word,\n * and the format version is used for the genitive case.\n * @see [CLDR website](http://cldr.unicode.org/translation/date-time-1/date-time#TOC-Standalone-vs.-Format-Styles)\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nvar FormStyle;\n(function (FormStyle) {\n FormStyle[FormStyle[\"Format\"] = 0] = \"Format\";\n FormStyle[FormStyle[\"Standalone\"] = 1] = \"Standalone\";\n})(FormStyle || (FormStyle = {}));\n/**\n * String widths available for translations.\n * The specific character widths are locale-specific.\n * Examples are given for the word \"Sunday\" in English.\n *\n * @publicApi\n */\nvar TranslationWidth;\n(function (TranslationWidth) {\n /** 1 character for `en-US`. For example: 'S' */\n TranslationWidth[TranslationWidth[\"Narrow\"] = 0] = \"Narrow\";\n /** 3 characters for `en-US`. For example: 'Sun' */\n TranslationWidth[TranslationWidth[\"Abbreviated\"] = 1] = \"Abbreviated\";\n /** Full length for `en-US`. For example: \"Sunday\" */\n TranslationWidth[TranslationWidth[\"Wide\"] = 2] = \"Wide\";\n /** 2 characters for `en-US`, For example: \"Su\" */\n TranslationWidth[TranslationWidth[\"Short\"] = 3] = \"Short\";\n})(TranslationWidth || (TranslationWidth = {}));\n/**\n * String widths available for date-time formats.\n * The specific character widths are locale-specific.\n * Examples are given for `en-US`.\n *\n * @see {@link getLocaleDateFormat}\n * @see {@link getLocaleTimeFormat}\n * @see {@link getLocaleDateTimeFormat}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n * @publicApi\n */\nvar FormatWidth;\n(function (FormatWidth) {\n /**\n * For `en-US`, 'M/d/yy, h:mm a'`\n * (Example: `6/15/15, 9:03 AM`)\n */\n FormatWidth[FormatWidth[\"Short\"] = 0] = \"Short\";\n /**\n * For `en-US`, `'MMM d, y, h:mm:ss a'`\n * (Example: `Jun 15, 2015, 9:03:01 AM`)\n */\n FormatWidth[FormatWidth[\"Medium\"] = 1] = \"Medium\";\n /**\n * For `en-US`, `'MMMM d, y, h:mm:ss a z'`\n * (Example: `June 15, 2015 at 9:03:01 AM GMT+1`)\n */\n FormatWidth[FormatWidth[\"Long\"] = 2] = \"Long\";\n /**\n * For `en-US`, `'EEEE, MMMM d, y, h:mm:ss a zzzz'`\n * (Example: `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00`)\n */\n FormatWidth[FormatWidth[\"Full\"] = 3] = \"Full\";\n})(FormatWidth || (FormatWidth = {}));\n/**\n * Symbols that can be used to replace placeholders in number patterns.\n * Examples are based on `en-US` values.\n *\n * @see {@link getLocaleNumberSymbol}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nvar NumberSymbol;\n(function (NumberSymbol) {\n /**\n * Decimal separator.\n * For `en-US`, the dot character.\n * Example: 2,345`.`67\n */\n NumberSymbol[NumberSymbol[\"Decimal\"] = 0] = \"Decimal\";\n /**\n * Grouping separator, typically for thousands.\n * For `en-US`, the comma character.\n * Example: 2`,`345.67\n */\n NumberSymbol[NumberSymbol[\"Group\"] = 1] = \"Group\";\n /**\n * List-item separator.\n * Example: \"one, two, and three\"\n */\n NumberSymbol[NumberSymbol[\"List\"] = 2] = \"List\";\n /**\n * Sign for percentage (out of 100).\n * Example: 23.4%\n */\n NumberSymbol[NumberSymbol[\"PercentSign\"] = 3] = \"PercentSign\";\n /**\n * Sign for positive numbers.\n * Example: +23\n */\n NumberSymbol[NumberSymbol[\"PlusSign\"] = 4] = \"PlusSign\";\n /**\n * Sign for negative numbers.\n * Example: -23\n */\n NumberSymbol[NumberSymbol[\"MinusSign\"] = 5] = \"MinusSign\";\n /**\n * Computer notation for exponential value (n times a power of 10).\n * Example: 1.2E3\n */\n NumberSymbol[NumberSymbol[\"Exponential\"] = 6] = \"Exponential\";\n /**\n * Human-readable format of exponential.\n * Example: 1.2x103\n */\n NumberSymbol[NumberSymbol[\"SuperscriptingExponent\"] = 7] = \"SuperscriptingExponent\";\n /**\n * Sign for permille (out of 1000).\n * Example: 23.4‰\n */\n NumberSymbol[NumberSymbol[\"PerMille\"] = 8] = \"PerMille\";\n /**\n * Infinity, can be used with plus and minus.\n * Example: ∞, +∞, -∞\n */\n NumberSymbol[NumberSymbol[\"Infinity\"] = 9] = \"Infinity\";\n /**\n * Not a number.\n * Example: NaN\n */\n NumberSymbol[NumberSymbol[\"NaN\"] = 10] = \"NaN\";\n /**\n * Symbol used between time units.\n * Example: 10:52\n */\n NumberSymbol[NumberSymbol[\"TimeSeparator\"] = 11] = \"TimeSeparator\";\n /**\n * Decimal separator for currency values (fallback to `Decimal`).\n * Example: $2,345.67\n */\n NumberSymbol[NumberSymbol[\"CurrencyDecimal\"] = 12] = \"CurrencyDecimal\";\n /**\n * Group separator for currency values (fallback to `Group`).\n * Example: $2,345.67\n */\n NumberSymbol[NumberSymbol[\"CurrencyGroup\"] = 13] = \"CurrencyGroup\";\n})(NumberSymbol || (NumberSymbol = {}));\n/**\n * The value for each day of the week, based on the `en-US` locale\n *\n * @publicApi\n */\nvar WeekDay;\n(function (WeekDay) {\n WeekDay[WeekDay[\"Sunday\"] = 0] = \"Sunday\";\n WeekDay[WeekDay[\"Monday\"] = 1] = \"Monday\";\n WeekDay[WeekDay[\"Tuesday\"] = 2] = \"Tuesday\";\n WeekDay[WeekDay[\"Wednesday\"] = 3] = \"Wednesday\";\n WeekDay[WeekDay[\"Thursday\"] = 4] = \"Thursday\";\n WeekDay[WeekDay[\"Friday\"] = 5] = \"Friday\";\n WeekDay[WeekDay[\"Saturday\"] = 6] = \"Saturday\";\n})(WeekDay || (WeekDay = {}));\n/**\n * Retrieves the locale ID from the currently loaded locale.\n * The loaded locale could be, for example, a global one rather than a regional one.\n * @param locale A locale code, such as `fr-FR`.\n * @returns The locale code. For example, `fr`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleId(locale) {\n return ɵfindLocaleData(locale)[ɵLocaleDataIndex.LocaleId];\n}\n/**\n * Retrieves day period strings for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized period strings. For example, `[AM, PM]` for `en-US`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDayPeriods(locale, formStyle, width) {\n const data = ɵfindLocaleData(locale);\n const amPmData = [\n data[ɵLocaleDataIndex.DayPeriodsFormat], data[ɵLocaleDataIndex.DayPeriodsStandalone]\n ];\n const amPm = getLastDefinedValue(amPmData, formStyle);\n return getLastDefinedValue(amPm, width);\n}\n/**\n * Retrieves days of the week for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example,`[Sunday, Monday, ... Saturday]` for `en-US`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDayNames(locale, formStyle, width) {\n const data = ɵfindLocaleData(locale);\n const daysData = [data[ɵLocaleDataIndex.DaysFormat], data[ɵLocaleDataIndex.DaysStandalone]];\n const days = getLastDefinedValue(daysData, formStyle);\n return getLastDefinedValue(days, width);\n}\n/**\n * Retrieves months of the year for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example, `[January, February, ...]` for `en-US`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleMonthNames(locale, formStyle, width) {\n const data = ɵfindLocaleData(locale);\n const monthsData = [data[ɵLocaleDataIndex.MonthsFormat], data[ɵLocaleDataIndex.MonthsStandalone]];\n const months = getLastDefinedValue(monthsData, formStyle);\n return getLastDefinedValue(months, width);\n}\n/**\n * Retrieves Gregorian-calendar eras for the given locale.\n * @param locale A locale code for the locale format rules to use.\n * @param width The required character width.\n\n * @returns An array of localized era strings.\n * For example, `[AD, BC]` for `en-US`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleEraNames(locale, width) {\n const data = ɵfindLocaleData(locale);\n const erasData = data[ɵLocaleDataIndex.Eras];\n return getLastDefinedValue(erasData, width);\n}\n/**\n * Retrieves the first day of the week for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns A day index number, using the 0-based week-day index for `en-US`\n * (Sunday = 0, Monday = 1, ...).\n * For example, for `fr-FR`, returns 1 to indicate that the first day is Monday.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleFirstDayOfWeek(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.FirstDayOfWeek];\n}\n/**\n * Range of week days that are considered the week-end for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The range of day values, `[startDay, endDay]`.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleWeekEndRange(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.WeekendRange];\n}\n/**\n * Retrieves a localized date-value formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see {@link FormatWidth}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDateFormat(locale, width) {\n const data = ɵfindLocaleData(locale);\n return getLastDefinedValue(data[ɵLocaleDataIndex.DateFormat], width);\n}\n/**\n * Retrieves a localized time-value formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see {@link FormatWidth}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n\n * @publicApi\n */\nfunction getLocaleTimeFormat(locale, width) {\n const data = ɵfindLocaleData(locale);\n return getLastDefinedValue(data[ɵLocaleDataIndex.TimeFormat], width);\n}\n/**\n * Retrieves a localized date-time formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see {@link FormatWidth}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDateTimeFormat(locale, width) {\n const data = ɵfindLocaleData(locale);\n const dateTimeFormatData = data[ɵLocaleDataIndex.DateTimeFormat];\n return getLastDefinedValue(dateTimeFormatData, width);\n}\n/**\n * Retrieves a localized number symbol that can be used to replace placeholders in number formats.\n * @param locale The locale code.\n * @param symbol The symbol to localize.\n * @returns The character for the localized symbol.\n * @see {@link NumberSymbol}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleNumberSymbol(locale, symbol) {\n const data = ɵfindLocaleData(locale);\n const res = data[ɵLocaleDataIndex.NumberSymbols][symbol];\n if (typeof res === 'undefined') {\n if (symbol === NumberSymbol.CurrencyDecimal) {\n return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Decimal];\n }\n else if (symbol === NumberSymbol.CurrencyGroup) {\n return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Group];\n }\n }\n return res;\n}\n/**\n * Retrieves a number format for a given locale.\n *\n * Numbers are formatted using patterns, like `#,###.00`. For example, the pattern `#,###.00`\n * when used to format the number 12345.678 could result in \"12'345,678\". That would happen if the\n * grouping separator for your language is an apostrophe, and the decimal separator is a comma.\n *\n * Important: The characters `.` `,` `0` `#` (and others below) are special placeholders\n * that stand for the decimal separator, and so on, and are NOT real characters.\n * You must NOT \"translate\" the placeholders. For example, don't change `.` to `,` even though in\n * your language the decimal point is written with a comma. The symbols should be replaced by the\n * local equivalents, using the appropriate `NumberSymbol` for your language.\n *\n * Here are the special characters used in number patterns:\n *\n * | Symbol | Meaning |\n * |--------|---------|\n * | . | Replaced automatically by the character used for the decimal point. |\n * | , | Replaced by the \"grouping\" (thousands) separator. |\n * | 0 | Replaced by a digit (or zero if there aren't enough digits). |\n * | # | Replaced by a digit (or nothing if there aren't enough). |\n * | ¤ | Replaced by a currency symbol, such as $ or USD. |\n * | % | Marks a percent format. The % symbol may change position, but must be retained. |\n * | E | Marks a scientific format. The E symbol may change position, but must be retained. |\n * | ' | Special characters used as literal characters are quoted with ASCII single quotes. |\n *\n * @param locale A locale code for the locale format rules to use.\n * @param type The type of numeric value to be formatted (such as `Decimal` or `Currency`.)\n * @returns The localized format string.\n * @see {@link NumberFormatStyle}\n * @see [CLDR website](http://cldr.unicode.org/translation/number-patterns)\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleNumberFormat(locale, type) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.NumberFormats][type];\n}\n/**\n * Retrieves the symbol used to represent the currency for the main country\n * corresponding to a given locale. For example, '$' for `en-US`.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The localized symbol character,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleCurrencySymbol(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.CurrencySymbol] || null;\n}\n/**\n * Retrieves the name of the currency for the main country corresponding\n * to a given locale. For example, 'US Dollar' for `en-US`.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency name,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleCurrencyName(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.CurrencyName] || null;\n}\n/**\n * Retrieves the default currency code for the given locale.\n *\n * The default is defined as the first currency which is still in use.\n *\n * @param locale The code of the locale whose currency code we want.\n * @returns The code of the default currency for the given locale.\n *\n * @publicApi\n */\nfunction getLocaleCurrencyCode(locale) {\n return ɵgetLocaleCurrencyCode(locale);\n}\n/**\n * Retrieves the currency values for a given locale.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency values.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n */\nfunction getLocaleCurrencies(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.Currencies];\n}\n/**\n * @alias core/ɵgetLocalePluralCase\n * @publicApi\n */\nconst getLocalePluralCase = ɵgetLocalePluralCase;\nfunction checkFullData(data) {\n if (!data[ɵLocaleDataIndex.ExtraData]) {\n throw new Error(`Missing extra locale data for the locale \"${data[ɵLocaleDataIndex\n .LocaleId]}\". Use \"registerLocaleData\" to load new data. See the \"I18n guide\" on angular.io to know more.`);\n }\n}\n/**\n * Retrieves locale-specific rules used to determine which day period to use\n * when more than one period is defined for a locale.\n *\n * There is a rule for each defined day period. The\n * first rule is applied to the first day period and so on.\n * Fall back to AM/PM when no rules are available.\n *\n * A rule can specify a period as time range, or as a single time value.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n-common-format-data-locale).\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The rules for the locale, a single time value or array of *from-time, to-time*,\n * or null if no periods are available.\n *\n * @see {@link getLocaleExtraDayPeriods}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleExtraDayPeriodRules(locale) {\n const data = ɵfindLocaleData(locale);\n checkFullData(data);\n const rules = data[ɵLocaleDataIndex.ExtraData][2 /* ɵExtraLocaleDataIndex.ExtraDayPeriodsRules */] || [];\n return rules.map((rule) => {\n if (typeof rule === 'string') {\n return extractTime(rule);\n }\n return [extractTime(rule[0]), extractTime(rule[1])];\n });\n}\n/**\n * Retrieves locale-specific day periods, which indicate roughly how a day is broken up\n * in different languages.\n * For example, for `en-US`, periods are morning, noon, afternoon, evening, and midnight.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n-common-format-data-locale).\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns The translated day-period strings.\n * @see {@link getLocaleExtraDayPeriodRules}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleExtraDayPeriods(locale, formStyle, width) {\n const data = ɵfindLocaleData(locale);\n checkFullData(data);\n const dayPeriodsData = [\n data[ɵLocaleDataIndex.ExtraData][0 /* ɵExtraLocaleDataIndex.ExtraDayPeriodFormats */],\n data[ɵLocaleDataIndex.ExtraData][1 /* ɵExtraLocaleDataIndex.ExtraDayPeriodStandalone */]\n ];\n const dayPeriods = getLastDefinedValue(dayPeriodsData, formStyle) || [];\n return getLastDefinedValue(dayPeriods, width) || [];\n}\n/**\n * Retrieves the writing direction of a specified locale\n * @param locale A locale code for the locale format rules to use.\n * @publicApi\n * @returns 'rtl' or 'ltr'\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n */\nfunction getLocaleDirection(locale) {\n const data = ɵfindLocaleData(locale);\n return data[ɵLocaleDataIndex.Directionality];\n}\n/**\n * Retrieves the first value that is defined in an array, going backwards from an index position.\n *\n * To avoid repeating the same data (as when the \"format\" and \"standalone\" forms are the same)\n * add the first value to the locale data arrays, and add other values only if they are different.\n *\n * @param data The data array to retrieve from.\n * @param index A 0-based index into the array to start from.\n * @returns The value immediately before the given index position.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLastDefinedValue(data, index) {\n for (let i = index; i > -1; i--) {\n if (typeof data[i] !== 'undefined') {\n return data[i];\n }\n }\n throw new Error('Locale data API: locale data undefined');\n}\n/**\n * Extracts the hours and minutes from a string like \"15:45\"\n */\nfunction extractTime(time) {\n const [h, m] = time.split(':');\n return { hours: +h, minutes: +m };\n}\n/**\n * Retrieves the currency symbol for a given currency code.\n *\n * For example, for the default `en-US` locale, the code `USD` can\n * be represented by the narrow symbol `$` or the wide symbol `US$`.\n *\n * @param code The currency code.\n * @param format The format, `wide` or `narrow`.\n * @param locale A locale code for the locale format rules to use.\n *\n * @returns The symbol, or the currency code if no symbol is available.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getCurrencySymbol(code, format, locale = 'en') {\n const currency = getLocaleCurrencies(locale)[code] || CURRENCIES_EN[code] || [];\n const symbolNarrow = currency[1 /* ɵCurrencyIndex.SymbolNarrow */];\n if (format === 'narrow' && typeof symbolNarrow === 'string') {\n return symbolNarrow;\n }\n return currency[0 /* ɵCurrencyIndex.Symbol */] || code;\n}\n// Most currencies have cents, that's why the default is 2\nconst DEFAULT_NB_OF_CURRENCY_DIGITS = 2;\n/**\n * Reports the number of decimal digits for a given currency.\n * The value depends upon the presence of cents in that particular currency.\n *\n * @param code The currency code.\n * @returns The number of decimal digits, typically 0 or 2.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getNumberOfCurrencyDigits(code) {\n let digits;\n const currency = CURRENCIES_EN[code];\n if (currency) {\n digits = currency[2 /* ɵCurrencyIndex.NbOfDigits */];\n }\n return typeof digits === 'number' ? digits : DEFAULT_NB_OF_CURRENCY_DIGITS;\n}\n\nconst ISO8601_DATE_REGEX = /^(\\d{4,})-?(\\d\\d)-?(\\d\\d)(?:T(\\d\\d)(?::?(\\d\\d)(?::?(\\d\\d)(?:\\.(\\d+))?)?)?(Z|([+-])(\\d\\d):?(\\d\\d))?)?$/;\n// 1 2 3 4 5 6 7 8 9 10 11\nconst NAMED_FORMATS = {};\nconst DATE_FORMATS_SPLIT = /((?:[^BEGHLMOSWYZabcdhmswyz']+)|(?:'(?:[^']|'')*')|(?:G{1,5}|y{1,4}|Y{1,4}|M{1,5}|L{1,5}|w{1,2}|W{1}|d{1,2}|E{1,6}|c{1,6}|a{1,5}|b{1,5}|B{1,5}|h{1,2}|H{1,2}|m{1,2}|s{1,2}|S{1,3}|z{1,4}|Z{1,5}|O{1,4}))([\\s\\S]*)/;\nvar ZoneWidth;\n(function (ZoneWidth) {\n ZoneWidth[ZoneWidth[\"Short\"] = 0] = \"Short\";\n ZoneWidth[ZoneWidth[\"ShortGMT\"] = 1] = \"ShortGMT\";\n ZoneWidth[ZoneWidth[\"Long\"] = 2] = \"Long\";\n ZoneWidth[ZoneWidth[\"Extended\"] = 3] = \"Extended\";\n})(ZoneWidth || (ZoneWidth = {}));\nvar DateType;\n(function (DateType) {\n DateType[DateType[\"FullYear\"] = 0] = \"FullYear\";\n DateType[DateType[\"Month\"] = 1] = \"Month\";\n DateType[DateType[\"Date\"] = 2] = \"Date\";\n DateType[DateType[\"Hours\"] = 3] = \"Hours\";\n DateType[DateType[\"Minutes\"] = 4] = \"Minutes\";\n DateType[DateType[\"Seconds\"] = 5] = \"Seconds\";\n DateType[DateType[\"FractionalSeconds\"] = 6] = \"FractionalSeconds\";\n DateType[DateType[\"Day\"] = 7] = \"Day\";\n})(DateType || (DateType = {}));\nvar TranslationType;\n(function (TranslationType) {\n TranslationType[TranslationType[\"DayPeriods\"] = 0] = \"DayPeriods\";\n TranslationType[TranslationType[\"Days\"] = 1] = \"Days\";\n TranslationType[TranslationType[\"Months\"] = 2] = \"Months\";\n TranslationType[TranslationType[\"Eras\"] = 3] = \"Eras\";\n})(TranslationType || (TranslationType = {}));\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date according to locale rules.\n *\n * @param value The date to format, as a Date, or a number (milliseconds since UTC epoch)\n * or an [ISO date-time string](https://www.w3.org/TR/NOTE-datetime).\n * @param format The date-time components to include. See `DatePipe` for details.\n * @param locale A locale code for the locale format rules to use.\n * @param timezone The time zone. A time zone offset from GMT (such as `'+0430'`),\n * or a standard UTC/GMT or continental US time zone abbreviation.\n * If not specified, uses host system settings.\n *\n * @returns The formatted date string.\n *\n * @see {@link DatePipe}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatDate(value, format, locale, timezone) {\n let date = toDate(value);\n const namedFormat = getNamedFormat(locale, format);\n format = namedFormat || format;\n let parts = [];\n let match;\n while (format) {\n match = DATE_FORMATS_SPLIT.exec(format);\n if (match) {\n parts = parts.concat(match.slice(1));\n const part = parts.pop();\n if (!part) {\n break;\n }\n format = part;\n }\n else {\n parts.push(format);\n break;\n }\n }\n let dateTimezoneOffset = date.getTimezoneOffset();\n if (timezone) {\n dateTimezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n date = convertTimezoneToLocal(date, timezone, true);\n }\n let text = '';\n parts.forEach(value => {\n const dateFormatter = getDateFormatter(value);\n text += dateFormatter ? dateFormatter(date, locale, dateTimezoneOffset) :\n value === '\\'\\'' ? '\\'' :\n value.replace(/(^'|'$)/g, '').replace(/''/g, '\\'');\n });\n return text;\n}\n/**\n * Create a new Date object with the given date value, and the time set to midnight.\n *\n * We cannot use `new Date(year, month, date)` because it maps years between 0 and 99 to 1900-1999.\n * See: https://github.com/angular/angular/issues/40377\n *\n * Note that this function returns a Date object whose time is midnight in the current locale's\n * timezone. In the future we might want to change this to be midnight in UTC, but this would be a\n * considerable breaking change.\n */\nfunction createDate(year, month, date) {\n // The `newDate` is set to midnight (UTC) on January 1st 1970.\n // - In PST this will be December 31st 1969 at 4pm.\n // - In GMT this will be January 1st 1970 at 1am.\n // Note that they even have different years, dates and months!\n const newDate = new Date(0);\n // `setFullYear()` allows years like 0001 to be set correctly. This function does not\n // change the internal time of the date.\n // Consider calling `setFullYear(2019, 8, 20)` (September 20, 2019).\n // - In PST this will now be September 20, 2019 at 4pm\n // - In GMT this will now be September 20, 2019 at 1am\n newDate.setFullYear(year, month, date);\n // We want the final date to be at local midnight, so we reset the time.\n // - In PST this will now be September 20, 2019 at 12am\n // - In GMT this will now be September 20, 2019 at 12am\n newDate.setHours(0, 0, 0);\n return newDate;\n}\nfunction getNamedFormat(locale, format) {\n const localeId = getLocaleId(locale);\n NAMED_FORMATS[localeId] = NAMED_FORMATS[localeId] || {};\n if (NAMED_FORMATS[localeId][format]) {\n return NAMED_FORMATS[localeId][format];\n }\n let formatValue = '';\n switch (format) {\n case 'shortDate':\n formatValue = getLocaleDateFormat(locale, FormatWidth.Short);\n break;\n case 'mediumDate':\n formatValue = getLocaleDateFormat(locale, FormatWidth.Medium);\n break;\n case 'longDate':\n formatValue = getLocaleDateFormat(locale, FormatWidth.Long);\n break;\n case 'fullDate':\n formatValue = getLocaleDateFormat(locale, FormatWidth.Full);\n break;\n case 'shortTime':\n formatValue = getLocaleTimeFormat(locale, FormatWidth.Short);\n break;\n case 'mediumTime':\n formatValue = getLocaleTimeFormat(locale, FormatWidth.Medium);\n break;\n case 'longTime':\n formatValue = getLocaleTimeFormat(locale, FormatWidth.Long);\n break;\n case 'fullTime':\n formatValue = getLocaleTimeFormat(locale, FormatWidth.Full);\n break;\n case 'short':\n const shortTime = getNamedFormat(locale, 'shortTime');\n const shortDate = getNamedFormat(locale, 'shortDate');\n formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Short), [shortTime, shortDate]);\n break;\n case 'medium':\n const mediumTime = getNamedFormat(locale, 'mediumTime');\n const mediumDate = getNamedFormat(locale, 'mediumDate');\n formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Medium), [mediumTime, mediumDate]);\n break;\n case 'long':\n const longTime = getNamedFormat(locale, 'longTime');\n const longDate = getNamedFormat(locale, 'longDate');\n formatValue =\n formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Long), [longTime, longDate]);\n break;\n case 'full':\n const fullTime = getNamedFormat(locale, 'fullTime');\n const fullDate = getNamedFormat(locale, 'fullDate');\n formatValue =\n formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Full), [fullTime, fullDate]);\n break;\n }\n if (formatValue) {\n NAMED_FORMATS[localeId][format] = formatValue;\n }\n return formatValue;\n}\nfunction formatDateTime(str, opt_values) {\n if (opt_values) {\n str = str.replace(/\\{([^}]+)}/g, function (match, key) {\n return (opt_values != null && key in opt_values) ? opt_values[key] : match;\n });\n }\n return str;\n}\nfunction padNumber(num, digits, minusSign = '-', trim, negWrap) {\n let neg = '';\n if (num < 0 || (negWrap && num <= 0)) {\n if (negWrap) {\n num = -num + 1;\n }\n else {\n num = -num;\n neg = minusSign;\n }\n }\n let strNum = String(num);\n while (strNum.length < digits) {\n strNum = '0' + strNum;\n }\n if (trim) {\n strNum = strNum.slice(strNum.length - digits);\n }\n return neg + strNum;\n}\nfunction formatFractionalSeconds(milliseconds, digits) {\n const strMs = padNumber(milliseconds, 3);\n return strMs.substring(0, digits);\n}\n/**\n * Returns a date formatter that transforms a date into its locale digit representation\n */\nfunction dateGetter(name, size, offset = 0, trim = false, negWrap = false) {\n return function (date, locale) {\n let part = getDatePart(name, date);\n if (offset > 0 || part > -offset) {\n part += offset;\n }\n if (name === DateType.Hours) {\n if (part === 0 && offset === -12) {\n part = 12;\n }\n }\n else if (name === DateType.FractionalSeconds) {\n return formatFractionalSeconds(part, size);\n }\n const localeMinus = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n return padNumber(part, size, localeMinus, trim, negWrap);\n };\n}\nfunction getDatePart(part, date) {\n switch (part) {\n case DateType.FullYear:\n return date.getFullYear();\n case DateType.Month:\n return date.getMonth();\n case DateType.Date:\n return date.getDate();\n case DateType.Hours:\n return date.getHours();\n case DateType.Minutes:\n return date.getMinutes();\n case DateType.Seconds:\n return date.getSeconds();\n case DateType.FractionalSeconds:\n return date.getMilliseconds();\n case DateType.Day:\n return date.getDay();\n default:\n throw new Error(`Unknown DateType value \"${part}\".`);\n }\n}\n/**\n * Returns a date formatter that transforms a date into its locale string representation\n */\nfunction dateStrGetter(name, width, form = FormStyle.Format, extended = false) {\n return function (date, locale) {\n return getDateTranslation(date, locale, name, width, form, extended);\n };\n}\n/**\n * Returns the locale translation of a date for a given form, type and width\n */\nfunction getDateTranslation(date, locale, name, width, form, extended) {\n switch (name) {\n case TranslationType.Months:\n return getLocaleMonthNames(locale, form, width)[date.getMonth()];\n case TranslationType.Days:\n return getLocaleDayNames(locale, form, width)[date.getDay()];\n case TranslationType.DayPeriods:\n const currentHours = date.getHours();\n const currentMinutes = date.getMinutes();\n if (extended) {\n const rules = getLocaleExtraDayPeriodRules(locale);\n const dayPeriods = getLocaleExtraDayPeriods(locale, form, width);\n const index = rules.findIndex(rule => {\n if (Array.isArray(rule)) {\n // morning, afternoon, evening, night\n const [from, to] = rule;\n const afterFrom = currentHours >= from.hours && currentMinutes >= from.minutes;\n const beforeTo = (currentHours < to.hours ||\n (currentHours === to.hours && currentMinutes < to.minutes));\n // We must account for normal rules that span a period during the day (e.g. 6am-9am)\n // where `from` is less (earlier) than `to`. But also rules that span midnight (e.g.\n // 10pm - 5am) where `from` is greater (later!) than `to`.\n //\n // In the first case the current time must be BOTH after `from` AND before `to`\n // (e.g. 8am is after 6am AND before 10am).\n //\n // In the second case the current time must be EITHER after `from` OR before `to`\n // (e.g. 4am is before 5am but not after 10pm; and 11pm is not before 5am but it is\n // after 10pm).\n if (from.hours < to.hours) {\n if (afterFrom && beforeTo) {\n return true;\n }\n }\n else if (afterFrom || beforeTo) {\n return true;\n }\n }\n else { // noon or midnight\n if (rule.hours === currentHours && rule.minutes === currentMinutes) {\n return true;\n }\n }\n return false;\n });\n if (index !== -1) {\n return dayPeriods[index];\n }\n }\n // if no rules for the day periods, we use am/pm by default\n return getLocaleDayPeriods(locale, form, width)[currentHours < 12 ? 0 : 1];\n case TranslationType.Eras:\n return getLocaleEraNames(locale, width)[date.getFullYear() <= 0 ? 0 : 1];\n default:\n // This default case is not needed by TypeScript compiler, as the switch is exhaustive.\n // However Closure Compiler does not understand that and reports an error in typed mode.\n // The `throw new Error` below works around the problem, and the unexpected: never variable\n // makes sure tsc still checks this code is unreachable.\n const unexpected = name;\n throw new Error(`unexpected translation type ${unexpected}`);\n }\n}\n/**\n * Returns a date formatter that transforms a date and an offset into a timezone with ISO8601 or\n * GMT format depending on the width (eg: short = +0430, short:GMT = GMT+4, long = GMT+04:30,\n * extended = +04:30)\n */\nfunction timeZoneGetter(width) {\n return function (date, locale, offset) {\n const zone = -1 * offset;\n const minusSign = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n const hours = zone > 0 ? Math.floor(zone / 60) : Math.ceil(zone / 60);\n switch (width) {\n case ZoneWidth.Short:\n return ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) +\n padNumber(Math.abs(zone % 60), 2, minusSign);\n case ZoneWidth.ShortGMT:\n return 'GMT' + ((zone >= 0) ? '+' : '') + padNumber(hours, 1, minusSign);\n case ZoneWidth.Long:\n return 'GMT' + ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) + ':' +\n padNumber(Math.abs(zone % 60), 2, minusSign);\n case ZoneWidth.Extended:\n if (offset === 0) {\n return 'Z';\n }\n else {\n return ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) + ':' +\n padNumber(Math.abs(zone % 60), 2, minusSign);\n }\n default:\n throw new Error(`Unknown zone width \"${width}\"`);\n }\n };\n}\nconst JANUARY = 0;\nconst THURSDAY = 4;\nfunction getFirstThursdayOfYear(year) {\n const firstDayOfYear = createDate(year, JANUARY, 1).getDay();\n return createDate(year, 0, 1 + ((firstDayOfYear <= THURSDAY) ? THURSDAY : THURSDAY + 7) - firstDayOfYear);\n}\nfunction getThursdayThisWeek(datetime) {\n return createDate(datetime.getFullYear(), datetime.getMonth(), datetime.getDate() + (THURSDAY - datetime.getDay()));\n}\nfunction weekGetter(size, monthBased = false) {\n return function (date, locale) {\n let result;\n if (monthBased) {\n const nbDaysBefore1stDayOfMonth = new Date(date.getFullYear(), date.getMonth(), 1).getDay() - 1;\n const today = date.getDate();\n result = 1 + Math.floor((today + nbDaysBefore1stDayOfMonth) / 7);\n }\n else {\n const thisThurs = getThursdayThisWeek(date);\n // Some days of a year are part of next year according to ISO 8601.\n // Compute the firstThurs from the year of this week's Thursday\n const firstThurs = getFirstThursdayOfYear(thisThurs.getFullYear());\n const diff = thisThurs.getTime() - firstThurs.getTime();\n result = 1 + Math.round(diff / 6.048e8); // 6.048e8 ms per week\n }\n return padNumber(result, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n };\n}\n/**\n * Returns a date formatter that provides the week-numbering year for the input date.\n */\nfunction weekNumberingYearGetter(size, trim = false) {\n return function (date, locale) {\n const thisThurs = getThursdayThisWeek(date);\n const weekNumberingYear = thisThurs.getFullYear();\n return padNumber(weekNumberingYear, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign), trim);\n };\n}\nconst DATE_FORMATS = {};\n// Based on CLDR formats:\n// See complete list: http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table\n// See also explanations: http://cldr.unicode.org/translation/date-time\n// TODO(ocombe): support all missing cldr formats: U, Q, D, F, e, j, J, C, A, v, V, X, x\nfunction getDateFormatter(format) {\n if (DATE_FORMATS[format]) {\n return DATE_FORMATS[format];\n }\n let formatter;\n switch (format) {\n // Era name (AD/BC)\n case 'G':\n case 'GG':\n case 'GGG':\n formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Abbreviated);\n break;\n case 'GGGG':\n formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Wide);\n break;\n case 'GGGGG':\n formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Narrow);\n break;\n // 1 digit representation of the year, e.g. (AD 1 => 1, AD 199 => 199)\n case 'y':\n formatter = dateGetter(DateType.FullYear, 1, 0, false, true);\n break;\n // 2 digit representation of the year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)\n case 'yy':\n formatter = dateGetter(DateType.FullYear, 2, 0, true, true);\n break;\n // 3 digit representation of the year, padded (000-999). (e.g. AD 2001 => 01, AD 2010 => 10)\n case 'yyy':\n formatter = dateGetter(DateType.FullYear, 3, 0, false, true);\n break;\n // 4 digit representation of the year (e.g. AD 1 => 0001, AD 2010 => 2010)\n case 'yyyy':\n formatter = dateGetter(DateType.FullYear, 4, 0, false, true);\n break;\n // 1 digit representation of the week-numbering year, e.g. (AD 1 => 1, AD 199 => 199)\n case 'Y':\n formatter = weekNumberingYearGetter(1);\n break;\n // 2 digit representation of the week-numbering year, padded (00-99). (e.g. AD 2001 => 01, AD\n // 2010 => 10)\n case 'YY':\n formatter = weekNumberingYearGetter(2, true);\n break;\n // 3 digit representation of the week-numbering year, padded (000-999). (e.g. AD 1 => 001, AD\n // 2010 => 2010)\n case 'YYY':\n formatter = weekNumberingYearGetter(3);\n break;\n // 4 digit representation of the week-numbering year (e.g. AD 1 => 0001, AD 2010 => 2010)\n case 'YYYY':\n formatter = weekNumberingYearGetter(4);\n break;\n // Month of the year (1-12), numeric\n case 'M':\n case 'L':\n formatter = dateGetter(DateType.Month, 1, 1);\n break;\n case 'MM':\n case 'LL':\n formatter = dateGetter(DateType.Month, 2, 1);\n break;\n // Month of the year (January, ...), string, format\n case 'MMM':\n formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated);\n break;\n case 'MMMM':\n formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Wide);\n break;\n case 'MMMMM':\n formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Narrow);\n break;\n // Month of the year (January, ...), string, standalone\n case 'LLL':\n formatter =\n dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated, FormStyle.Standalone);\n break;\n case 'LLLL':\n formatter =\n dateStrGetter(TranslationType.Months, TranslationWidth.Wide, FormStyle.Standalone);\n break;\n case 'LLLLL':\n formatter =\n dateStrGetter(TranslationType.Months, TranslationWidth.Narrow, FormStyle.Standalone);\n break;\n // Week of the year (1, ... 52)\n case 'w':\n formatter = weekGetter(1);\n break;\n case 'ww':\n formatter = weekGetter(2);\n break;\n // Week of the month (1, ...)\n case 'W':\n formatter = weekGetter(1, true);\n break;\n // Day of the month (1-31)\n case 'd':\n formatter = dateGetter(DateType.Date, 1);\n break;\n case 'dd':\n formatter = dateGetter(DateType.Date, 2);\n break;\n // Day of the Week StandAlone (1, 1, Mon, Monday, M, Mo)\n case 'c':\n case 'cc':\n formatter = dateGetter(DateType.Day, 1);\n break;\n case 'ccc':\n formatter =\n dateStrGetter(TranslationType.Days, TranslationWidth.Abbreviated, FormStyle.Standalone);\n break;\n case 'cccc':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Wide, FormStyle.Standalone);\n break;\n case 'ccccc':\n formatter =\n dateStrGetter(TranslationType.Days, TranslationWidth.Narrow, FormStyle.Standalone);\n break;\n case 'cccccc':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Short, FormStyle.Standalone);\n break;\n // Day of the Week\n case 'E':\n case 'EE':\n case 'EEE':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Abbreviated);\n break;\n case 'EEEE':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Wide);\n break;\n case 'EEEEE':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Narrow);\n break;\n case 'EEEEEE':\n formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Short);\n break;\n // Generic period of the day (am-pm)\n case 'a':\n case 'aa':\n case 'aaa':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated);\n break;\n case 'aaaa':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide);\n break;\n case 'aaaaa':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow);\n break;\n // Extended period of the day (midnight, at night, ...), standalone\n case 'b':\n case 'bb':\n case 'bbb':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Standalone, true);\n break;\n case 'bbbb':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Standalone, true);\n break;\n case 'bbbbb':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Standalone, true);\n break;\n // Extended period of the day (midnight, night, ...), standalone\n case 'B':\n case 'BB':\n case 'BBB':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Format, true);\n break;\n case 'BBBB':\n formatter =\n dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Format, true);\n break;\n case 'BBBBB':\n formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Format, true);\n break;\n // Hour in AM/PM, (1-12)\n case 'h':\n formatter = dateGetter(DateType.Hours, 1, -12);\n break;\n case 'hh':\n formatter = dateGetter(DateType.Hours, 2, -12);\n break;\n // Hour of the day (0-23)\n case 'H':\n formatter = dateGetter(DateType.Hours, 1);\n break;\n // Hour in day, padded (00-23)\n case 'HH':\n formatter = dateGetter(DateType.Hours, 2);\n break;\n // Minute of the hour (0-59)\n case 'm':\n formatter = dateGetter(DateType.Minutes, 1);\n break;\n case 'mm':\n formatter = dateGetter(DateType.Minutes, 2);\n break;\n // Second of the minute (0-59)\n case 's':\n formatter = dateGetter(DateType.Seconds, 1);\n break;\n case 'ss':\n formatter = dateGetter(DateType.Seconds, 2);\n break;\n // Fractional second\n case 'S':\n formatter = dateGetter(DateType.FractionalSeconds, 1);\n break;\n case 'SS':\n formatter = dateGetter(DateType.FractionalSeconds, 2);\n break;\n case 'SSS':\n formatter = dateGetter(DateType.FractionalSeconds, 3);\n break;\n // Timezone ISO8601 short format (-0430)\n case 'Z':\n case 'ZZ':\n case 'ZZZ':\n formatter = timeZoneGetter(ZoneWidth.Short);\n break;\n // Timezone ISO8601 extended format (-04:30)\n case 'ZZZZZ':\n formatter = timeZoneGetter(ZoneWidth.Extended);\n break;\n // Timezone GMT short format (GMT+4)\n case 'O':\n case 'OO':\n case 'OOO':\n // Should be location, but fallback to format O instead because we don't have the data yet\n case 'z':\n case 'zz':\n case 'zzz':\n formatter = timeZoneGetter(ZoneWidth.ShortGMT);\n break;\n // Timezone GMT long format (GMT+0430)\n case 'OOOO':\n case 'ZZZZ':\n // Should be location, but fallback to format O instead because we don't have the data yet\n case 'zzzz':\n formatter = timeZoneGetter(ZoneWidth.Long);\n break;\n default:\n return null;\n }\n DATE_FORMATS[format] = formatter;\n return formatter;\n}\nfunction timezoneToOffset(timezone, fallback) {\n // Support: IE 11 only, Edge 13-15+\n // IE/Edge do not \"understand\" colon (`:`) in timezone\n timezone = timezone.replace(/:/g, '');\n const requestedTimezoneOffset = Date.parse('Jan 01, 1970 00:00:00 ' + timezone) / 60000;\n return isNaN(requestedTimezoneOffset) ? fallback : requestedTimezoneOffset;\n}\nfunction addDateMinutes(date, minutes) {\n date = new Date(date.getTime());\n date.setMinutes(date.getMinutes() + minutes);\n return date;\n}\nfunction convertTimezoneToLocal(date, timezone, reverse) {\n const reverseValue = reverse ? -1 : 1;\n const dateTimezoneOffset = date.getTimezoneOffset();\n const timezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n return addDateMinutes(date, reverseValue * (timezoneOffset - dateTimezoneOffset));\n}\n/**\n * Converts a value to date.\n *\n * Supported input formats:\n * - `Date`\n * - number: timestamp\n * - string: numeric (e.g. \"1234\"), ISO and date strings in a format supported by\n * [Date.parse()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse).\n * Note: ISO strings without time return a date without timeoffset.\n *\n * Throws if unable to convert to a date.\n */\nfunction toDate(value) {\n if (isDate(value)) {\n return value;\n }\n if (typeof value === 'number' && !isNaN(value)) {\n return new Date(value);\n }\n if (typeof value === 'string') {\n value = value.trim();\n if (/^(\\d{4}(-\\d{1,2}(-\\d{1,2})?)?)$/.test(value)) {\n /* For ISO Strings without time the day, month and year must be extracted from the ISO String\n before Date creation to avoid time offset and errors in the new Date.\n If we only replace '-' with ',' in the ISO String (\"2015,01,01\"), and try to create a new\n date, some browsers (e.g. IE 9) will throw an invalid Date error.\n If we leave the '-' (\"2015-01-01\") and try to create a new Date(\"2015-01-01\") the timeoffset\n is applied.\n Note: ISO months are 0 for January, 1 for February, ... */\n const [y, m = 1, d = 1] = value.split('-').map((val) => +val);\n return createDate(y, m - 1, d);\n }\n const parsedNb = parseFloat(value);\n // any string that only contains numbers, like \"1234\" but not like \"1234hello\"\n if (!isNaN(value - parsedNb)) {\n return new Date(parsedNb);\n }\n let match;\n if (match = value.match(ISO8601_DATE_REGEX)) {\n return isoStringToDate(match);\n }\n }\n const date = new Date(value);\n if (!isDate(date)) {\n throw new Error(`Unable to convert \"${value}\" into a date`);\n }\n return date;\n}\n/**\n * Converts a date in ISO8601 to a Date.\n * Used instead of `Date.parse` because of browser discrepancies.\n */\nfunction isoStringToDate(match) {\n const date = new Date(0);\n let tzHour = 0;\n let tzMin = 0;\n // match[8] means that the string contains \"Z\" (UTC) or a timezone like \"+01:00\" or \"+0100\"\n const dateSetter = match[8] ? date.setUTCFullYear : date.setFullYear;\n const timeSetter = match[8] ? date.setUTCHours : date.setHours;\n // if there is a timezone defined like \"+01:00\" or \"+0100\"\n if (match[9]) {\n tzHour = Number(match[9] + match[10]);\n tzMin = Number(match[9] + match[11]);\n }\n dateSetter.call(date, Number(match[1]), Number(match[2]) - 1, Number(match[3]));\n const h = Number(match[4] || 0) - tzHour;\n const m = Number(match[5] || 0) - tzMin;\n const s = Number(match[6] || 0);\n // The ECMAScript specification (https://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.11)\n // defines that `DateTime` milliseconds should always be rounded down, so that `999.9ms`\n // becomes `999ms`.\n const ms = Math.floor(parseFloat('0.' + (match[7] || 0)) * 1000);\n timeSetter.call(date, h, m, s, ms);\n return date;\n}\nfunction isDate(value) {\n return value instanceof Date && !isNaN(value.valueOf());\n}\n\nconst NUMBER_FORMAT_REGEXP = /^(\\d+)?\\.((\\d+)(-(\\d+))?)?$/;\nconst MAX_DIGITS = 22;\nconst DECIMAL_SEP = '.';\nconst ZERO_CHAR = '0';\nconst PATTERN_SEP = ';';\nconst GROUP_SEP = ',';\nconst DIGIT_CHAR = '#';\nconst CURRENCY_CHAR = '¤';\nconst PERCENT_CHAR = '%';\n/**\n * Transforms a number to a locale string based on a style and a format.\n */\nfunction formatNumberToLocaleString(value, pattern, locale, groupSymbol, decimalSymbol, digitsInfo, isPercent = false) {\n let formattedText = '';\n let isZero = false;\n if (!isFinite(value)) {\n formattedText = getLocaleNumberSymbol(locale, NumberSymbol.Infinity);\n }\n else {\n let parsedNumber = parseNumber(value);\n if (isPercent) {\n parsedNumber = toPercent(parsedNumber);\n }\n let minInt = pattern.minInt;\n let minFraction = pattern.minFrac;\n let maxFraction = pattern.maxFrac;\n if (digitsInfo) {\n const parts = digitsInfo.match(NUMBER_FORMAT_REGEXP);\n if (parts === null) {\n throw new Error(`${digitsInfo} is not a valid digit info`);\n }\n const minIntPart = parts[1];\n const minFractionPart = parts[3];\n const maxFractionPart = parts[5];\n if (minIntPart != null) {\n minInt = parseIntAutoRadix(minIntPart);\n }\n if (minFractionPart != null) {\n minFraction = parseIntAutoRadix(minFractionPart);\n }\n if (maxFractionPart != null) {\n maxFraction = parseIntAutoRadix(maxFractionPart);\n }\n else if (minFractionPart != null && minFraction > maxFraction) {\n maxFraction = minFraction;\n }\n }\n roundNumber(parsedNumber, minFraction, maxFraction);\n let digits = parsedNumber.digits;\n let integerLen = parsedNumber.integerLen;\n const exponent = parsedNumber.exponent;\n let decimals = [];\n isZero = digits.every(d => !d);\n // pad zeros for small numbers\n for (; integerLen < minInt; integerLen++) {\n digits.unshift(0);\n }\n // pad zeros for small numbers\n for (; integerLen < 0; integerLen++) {\n digits.unshift(0);\n }\n // extract decimals digits\n if (integerLen > 0) {\n decimals = digits.splice(integerLen, digits.length);\n }\n else {\n decimals = digits;\n digits = [0];\n }\n // format the integer digits with grouping separators\n const groups = [];\n if (digits.length >= pattern.lgSize) {\n groups.unshift(digits.splice(-pattern.lgSize, digits.length).join(''));\n }\n while (digits.length > pattern.gSize) {\n groups.unshift(digits.splice(-pattern.gSize, digits.length).join(''));\n }\n if (digits.length) {\n groups.unshift(digits.join(''));\n }\n formattedText = groups.join(getLocaleNumberSymbol(locale, groupSymbol));\n // append the decimal digits\n if (decimals.length) {\n formattedText += getLocaleNumberSymbol(locale, decimalSymbol) + decimals.join('');\n }\n if (exponent) {\n formattedText += getLocaleNumberSymbol(locale, NumberSymbol.Exponential) + '+' + exponent;\n }\n }\n if (value < 0 && !isZero) {\n formattedText = pattern.negPre + formattedText + pattern.negSuf;\n }\n else {\n formattedText = pattern.posPre + formattedText + pattern.posSuf;\n }\n return formattedText;\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as currency using locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param currency A string containing the currency symbol or its name,\n * such as \"$\" or \"Canadian Dollar\". Used in output string, but does not affect the operation\n * of the function.\n * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217)\n * currency code, such as `USD` for the US dollar and `EUR` for the euro.\n * Used to determine the number of digits in the decimal part.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted currency value.\n *\n * @see {@link formatNumber}\n * @see {@link DecimalPipe}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatCurrency(value, locale, currency, currencyCode, digitsInfo) {\n const format = getLocaleNumberFormat(locale, NumberFormatStyle.Currency);\n const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n pattern.minFrac = getNumberOfCurrencyDigits(currencyCode);\n pattern.maxFrac = pattern.minFrac;\n const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.CurrencyGroup, NumberSymbol.CurrencyDecimal, digitsInfo);\n return res\n .replace(CURRENCY_CHAR, currency)\n // if we have 2 time the currency character, the second one is ignored\n .replace(CURRENCY_CHAR, '')\n // If there is a spacing between currency character and the value and\n // the currency character is suppressed by passing an empty string, the\n // spacing character would remain as part of the string. Then we\n // should remove it.\n .trim();\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as a percentage according to locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted percentage value.\n *\n * @see {@link formatNumber}\n * @see {@link DecimalPipe}\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n * @publicApi\n *\n */\nfunction formatPercent(value, locale, digitsInfo) {\n const format = getLocaleNumberFormat(locale, NumberFormatStyle.Percent);\n const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo, true);\n return res.replace(new RegExp(PERCENT_CHAR, 'g'), getLocaleNumberSymbol(locale, NumberSymbol.PercentSign));\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as text, with group sizing, separator, and other\n * parameters based on the locale.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted text string.\n * @see [Internationalization (i18n) Guide](/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatNumber(value, locale, digitsInfo) {\n const format = getLocaleNumberFormat(locale, NumberFormatStyle.Decimal);\n const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n return formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo);\n}\nfunction parseNumberFormat(format, minusSign = '-') {\n const p = {\n minInt: 1,\n minFrac: 0,\n maxFrac: 0,\n posPre: '',\n posSuf: '',\n negPre: '',\n negSuf: '',\n gSize: 0,\n lgSize: 0\n };\n const patternParts = format.split(PATTERN_SEP);\n const positive = patternParts[0];\n const negative = patternParts[1];\n const positiveParts = positive.indexOf(DECIMAL_SEP) !== -1 ?\n positive.split(DECIMAL_SEP) :\n [\n positive.substring(0, positive.lastIndexOf(ZERO_CHAR) + 1),\n positive.substring(positive.lastIndexOf(ZERO_CHAR) + 1)\n ], integer = positiveParts[0], fraction = positiveParts[1] || '';\n p.posPre = integer.substring(0, integer.indexOf(DIGIT_CHAR));\n for (let i = 0; i < fraction.length; i++) {\n const ch = fraction.charAt(i);\n if (ch === ZERO_CHAR) {\n p.minFrac = p.maxFrac = i + 1;\n }\n else if (ch === DIGIT_CHAR) {\n p.maxFrac = i + 1;\n }\n else {\n p.posSuf += ch;\n }\n }\n const groups = integer.split(GROUP_SEP);\n p.gSize = groups[1] ? groups[1].length : 0;\n p.lgSize = (groups[2] || groups[1]) ? (groups[2] || groups[1]).length : 0;\n if (negative) {\n const trunkLen = positive.length - p.posPre.length - p.posSuf.length, pos = negative.indexOf(DIGIT_CHAR);\n p.negPre = negative.substring(0, pos).replace(/'/g, '');\n p.negSuf = negative.slice(pos + trunkLen).replace(/'/g, '');\n }\n else {\n p.negPre = minusSign + p.posPre;\n p.negSuf = p.posSuf;\n }\n return p;\n}\n// Transforms a parsed number into a percentage by multiplying it by 100\nfunction toPercent(parsedNumber) {\n // if the number is 0, don't do anything\n if (parsedNumber.digits[0] === 0) {\n return parsedNumber;\n }\n // Getting the current number of decimals\n const fractionLen = parsedNumber.digits.length - parsedNumber.integerLen;\n if (parsedNumber.exponent) {\n parsedNumber.exponent += 2;\n }\n else {\n if (fractionLen === 0) {\n parsedNumber.digits.push(0, 0);\n }\n else if (fractionLen === 1) {\n parsedNumber.digits.push(0);\n }\n parsedNumber.integerLen += 2;\n }\n return parsedNumber;\n}\n/**\n * Parses a number.\n * Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/\n */\nfunction parseNumber(num) {\n let numStr = Math.abs(num) + '';\n let exponent = 0, digits, integerLen;\n let i, j, zeros;\n // Decimal point?\n if ((integerLen = numStr.indexOf(DECIMAL_SEP)) > -1) {\n numStr = numStr.replace(DECIMAL_SEP, '');\n }\n // Exponential form?\n if ((i = numStr.search(/e/i)) > 0) {\n // Work out the exponent.\n if (integerLen < 0)\n integerLen = i;\n integerLen += +numStr.slice(i + 1);\n numStr = numStr.substring(0, i);\n }\n else if (integerLen < 0) {\n // There was no decimal point or exponent so it is an integer.\n integerLen = numStr.length;\n }\n // Count the number of leading zeros.\n for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) { /* empty */\n }\n if (i === (zeros = numStr.length)) {\n // The digits are all zero.\n digits = [0];\n integerLen = 1;\n }\n else {\n // Count the number of trailing zeros\n zeros--;\n while (numStr.charAt(zeros) === ZERO_CHAR)\n zeros--;\n // Trailing zeros are insignificant so ignore them\n integerLen -= i;\n digits = [];\n // Convert string to array of digits without leading/trailing zeros.\n for (j = 0; i <= zeros; i++, j++) {\n digits[j] = Number(numStr.charAt(i));\n }\n }\n // If the number overflows the maximum allowed digits then use an exponent.\n if (integerLen > MAX_DIGITS) {\n digits = digits.splice(0, MAX_DIGITS - 1);\n exponent = integerLen - 1;\n integerLen = 1;\n }\n return { digits, exponent, integerLen };\n}\n/**\n * Round the parsed number to the specified number of decimal places\n * This function changes the parsedNumber in-place\n */\nfunction roundNumber(parsedNumber, minFrac, maxFrac) {\n if (minFrac > maxFrac) {\n throw new Error(`The minimum number of digits after fraction (${minFrac}) is higher than the maximum (${maxFrac}).`);\n }\n let digits = parsedNumber.digits;\n let fractionLen = digits.length - parsedNumber.integerLen;\n const fractionSize = Math.min(Math.max(minFrac, fractionLen), maxFrac);\n // The index of the digit to where rounding is to occur\n let roundAt = fractionSize + parsedNumber.integerLen;\n let digit = digits[roundAt];\n if (roundAt > 0) {\n // Drop fractional digits beyond `roundAt`\n digits.splice(Math.max(parsedNumber.integerLen, roundAt));\n // Set non-fractional digits beyond `roundAt` to 0\n for (let j = roundAt; j < digits.length; j++) {\n digits[j] = 0;\n }\n }\n else {\n // We rounded to zero so reset the parsedNumber\n fractionLen = Math.max(0, fractionLen);\n parsedNumber.integerLen = 1;\n digits.length = Math.max(1, roundAt = fractionSize + 1);\n digits[0] = 0;\n for (let i = 1; i < roundAt; i++)\n digits[i] = 0;\n }\n if (digit >= 5) {\n if (roundAt - 1 < 0) {\n for (let k = 0; k > roundAt; k--) {\n digits.unshift(0);\n parsedNumber.integerLen++;\n }\n digits.unshift(1);\n parsedNumber.integerLen++;\n }\n else {\n digits[roundAt - 1]++;\n }\n }\n // Pad out with zeros to get the required fraction length\n for (; fractionLen < Math.max(0, fractionSize); fractionLen++)\n digits.push(0);\n let dropTrailingZeros = fractionSize !== 0;\n // Minimal length = nb of decimals required + current nb of integers\n // Any number besides that is optional and can be removed if it's a trailing 0\n const minLen = minFrac + parsedNumber.integerLen;\n // Do any carrying, e.g. a digit was rounded up to 10\n const carry = digits.reduceRight(function (carry, d, i, digits) {\n d = d + carry;\n digits[i] = d < 10 ? d : d - 10; // d % 10\n if (dropTrailingZeros) {\n // Do not keep meaningless fractional trailing zeros (e.g. 15.52000 --> 15.52)\n if (digits[i] === 0 && i >= minLen) {\n digits.pop();\n }\n else {\n dropTrailingZeros = false;\n }\n }\n return d >= 10 ? 1 : 0; // Math.floor(d / 10);\n }, 0);\n if (carry) {\n digits.unshift(carry);\n parsedNumber.integerLen++;\n }\n}\nfunction parseIntAutoRadix(text) {\n const result = parseInt(text);\n if (isNaN(result)) {\n throw new Error('Invalid integer literal when parsing ' + text);\n }\n return result;\n}\n\n/**\n * @publicApi\n */\nclass NgLocalization {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocalization, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocalization, providedIn: 'root', useFactory: (locale) => new NgLocaleLocalization(locale), deps: [{ token: LOCALE_ID }] }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocalization, decorators: [{\n type: Injectable,\n args: [{\n providedIn: 'root',\n useFactory: (locale) => new NgLocaleLocalization(locale),\n deps: [LOCALE_ID],\n }]\n }] });\n/**\n * Returns the plural category for a given value.\n * - \"=value\" when the case exists,\n * - the plural category otherwise\n */\nfunction getPluralCategory(value, cases, ngLocalization, locale) {\n let key = `=${value}`;\n if (cases.indexOf(key) > -1) {\n return key;\n }\n key = ngLocalization.getPluralCategory(value, locale);\n if (cases.indexOf(key) > -1) {\n return key;\n }\n if (cases.indexOf('other') > -1) {\n return 'other';\n }\n throw new Error(`No plural message found for value \"${value}\"`);\n}\n/**\n * Returns the plural case based on the locale\n *\n * @publicApi\n */\nclass NgLocaleLocalization extends NgLocalization {\n constructor(locale) {\n super();\n this.locale = locale;\n }\n getPluralCategory(value, locale) {\n const plural = getLocalePluralCase(locale || this.locale)(value);\n switch (plural) {\n case Plural.Zero:\n return 'zero';\n case Plural.One:\n return 'one';\n case Plural.Two:\n return 'two';\n case Plural.Few:\n return 'few';\n case Plural.Many:\n return 'many';\n default:\n return 'other';\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocaleLocalization, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocaleLocalization }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgLocaleLocalization, decorators: [{\n type: Injectable\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [LOCALE_ID]\n }] }] });\n\n/**\n * Register global data to be used internally by Angular. See the\n * [\"I18n guide\"](guide/i18n-common-format-data-locale) to know how to import additional locale\n * data.\n *\n * The signature registerLocaleData(data: any, extraData?: any) is deprecated since v5.1\n *\n * @publicApi\n */\nfunction registerLocaleData(data, localeId, extraData) {\n return ɵregisterLocaleData(data, localeId, extraData);\n}\n\nfunction parseCookieValue(cookieStr, name) {\n name = encodeURIComponent(name);\n for (const cookie of cookieStr.split(';')) {\n const eqIndex = cookie.indexOf('=');\n const [cookieName, cookieValue] = eqIndex == -1 ? [cookie, ''] : [cookie.slice(0, eqIndex), cookie.slice(eqIndex + 1)];\n if (cookieName.trim() === name) {\n return decodeURIComponent(cookieValue);\n }\n }\n return null;\n}\n\nconst WS_REGEXP = /\\s+/;\nconst EMPTY_ARRAY = [];\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n * ...\n *\n * ...\n *\n * ...\n *\n * ...\n *\n * ...\n * ```\n *\n * @description\n *\n * Adds and removes CSS classes on an HTML element.\n *\n * The CSS classes are updated as follows, depending on the type of the expression evaluation:\n * - `string` - the CSS classes listed in the string (space delimited) are added,\n * - `Array` - the CSS classes declared as Array elements are added,\n * - `Object` - keys are CSS classes that get added when the expression given in the value\n * evaluates to a truthy value, otherwise they are removed.\n *\n * @publicApi\n */\nclass NgClass {\n constructor(_ngEl, _renderer) {\n this._ngEl = _ngEl;\n this._renderer = _renderer;\n this.initialClasses = EMPTY_ARRAY;\n this.stateMap = new Map();\n }\n set klass(value) {\n this.initialClasses = value != null ? value.trim().split(WS_REGEXP) : EMPTY_ARRAY;\n }\n set ngClass(value) {\n this.rawClass = typeof value === 'string' ? value.trim().split(WS_REGEXP) : value;\n }\n /*\n The NgClass directive uses the custom change detection algorithm for its inputs. The custom\n algorithm is necessary since inputs are represented as complex object or arrays that need to be\n deeply-compared.\n \n This algorithm is perf-sensitive since NgClass is used very frequently and its poor performance\n might negatively impact runtime performance of the entire change detection cycle. The design of\n this algorithm is making sure that:\n - there is no unnecessary DOM manipulation (CSS classes are added / removed from the DOM only when\n needed), even if references to bound objects change;\n - there is no memory allocation if nothing changes (even relatively modest memory allocation\n during the change detection cycle can result in GC pauses for some of the CD cycles).\n \n The algorithm works by iterating over the set of bound classes, staring with [class] binding and\n then going over [ngClass] binding. For each CSS class name:\n - check if it was seen before (this information is tracked in the state map) and if its value\n changed;\n - mark it as \"touched\" - names that are not marked are not present in the latest set of binding\n and we can remove such class name from the internal data structures;\n \n After iteration over all the CSS class names we've got data structure with all the information\n necessary to synchronize changes to the DOM - it is enough to iterate over the state map, flush\n changes to the DOM and reset internal data structures so those are ready for the next change\n detection cycle.\n */\n ngDoCheck() {\n // classes from the [class] binding\n for (const klass of this.initialClasses) {\n this._updateState(klass, true);\n }\n // classes from the [ngClass] binding\n const rawClass = this.rawClass;\n if (Array.isArray(rawClass) || rawClass instanceof Set) {\n for (const klass of rawClass) {\n this._updateState(klass, true);\n }\n }\n else if (rawClass != null) {\n for (const klass of Object.keys(rawClass)) {\n this._updateState(klass, Boolean(rawClass[klass]));\n }\n }\n this._applyStateDiff();\n }\n _updateState(klass, nextEnabled) {\n const state = this.stateMap.get(klass);\n if (state !== undefined) {\n if (state.enabled !== nextEnabled) {\n state.changed = true;\n state.enabled = nextEnabled;\n }\n state.touched = true;\n }\n else {\n this.stateMap.set(klass, { enabled: nextEnabled, changed: true, touched: true });\n }\n }\n _applyStateDiff() {\n for (const stateEntry of this.stateMap) {\n const klass = stateEntry[0];\n const state = stateEntry[1];\n if (state.changed) {\n this._toggleClass(klass, state.enabled);\n state.changed = false;\n }\n else if (!state.touched) {\n // A class that was previously active got removed from the new collection of classes -\n // remove from the DOM as well.\n if (state.enabled) {\n this._toggleClass(klass, false);\n }\n this.stateMap.delete(klass);\n }\n state.touched = false;\n }\n }\n _toggleClass(klass, enabled) {\n if (ngDevMode) {\n if (typeof klass !== 'string') {\n throw new Error(`NgClass can only toggle CSS classes expressed as strings, got ${ɵstringify(klass)}`);\n }\n }\n klass = klass.trim();\n if (klass.length > 0) {\n klass.split(WS_REGEXP).forEach(klass => {\n if (enabled) {\n this._renderer.addClass(this._ngEl.nativeElement, klass);\n }\n else {\n this._renderer.removeClass(this._ngEl.nativeElement, klass);\n }\n });\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgClass, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgClass, isStandalone: true, selector: \"[ngClass]\", inputs: { klass: [\"class\", \"klass\"], ngClass: \"ngClass\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgClass, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngClass]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ElementRef }, { type: i0.Renderer2 }], propDecorators: { klass: [{\n type: Input,\n args: ['class']\n }], ngClass: [{\n type: Input,\n args: ['ngClass']\n }] } });\n\n/**\n * Instantiates a {@link Component} type and inserts its Host View into the current View.\n * `NgComponentOutlet` provides a declarative approach for dynamic component creation.\n *\n * `NgComponentOutlet` requires a component type, if a falsy value is set the view will clear and\n * any existing component will be destroyed.\n *\n * @usageNotes\n *\n * ### Fine tune control\n *\n * You can control the component creation process by using the following optional attributes:\n *\n * * `ngComponentOutletInputs`: Optional component inputs object, which will be bind to the\n * component.\n *\n * * `ngComponentOutletInjector`: Optional custom {@link Injector} that will be used as parent for\n * the Component. Defaults to the injector of the current view container.\n *\n * * `ngComponentOutletContent`: Optional list of projectable nodes to insert into the content\n * section of the component, if it exists.\n *\n * * `ngComponentOutletNgModule`: Optional NgModule class reference to allow loading another\n * module dynamically, then loading a component from that module.\n *\n * * `ngComponentOutletNgModuleFactory`: Deprecated config option that allows providing optional\n * NgModule factory to allow loading another module dynamically, then loading a component from that\n * module. Use `ngComponentOutletNgModule` instead.\n *\n * ### Syntax\n *\n * Simple\n * ```\n * \n * ```\n *\n * With inputs\n * ```\n * \n * \n * ```\n *\n * Customized injector/content\n * ```\n * \n * \n * ```\n *\n * Customized NgModule reference\n * ```\n * \n * \n * ```\n *\n * ### A simple example\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='SimpleExample'}\n *\n * A more complete example with additional options:\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='CompleteExample'}\n *\n * @publicApi\n * @ngModule CommonModule\n */\nclass NgComponentOutlet {\n constructor(_viewContainerRef) {\n this._viewContainerRef = _viewContainerRef;\n this.ngComponentOutlet = null;\n /**\n * A helper data structure that allows us to track inputs that were part of the\n * ngComponentOutletInputs expression. Tracking inputs is necessary for proper removal of ones\n * that are no longer referenced.\n */\n this._inputsUsed = new Map();\n }\n _needToReCreateNgModuleInstance(changes) {\n // Note: square brackets property accessor is safe for Closure compiler optimizations (the\n // `changes` argument of the `ngOnChanges` lifecycle hook retains the names of the fields that\n // were changed).\n return changes['ngComponentOutletNgModule'] !== undefined ||\n changes['ngComponentOutletNgModuleFactory'] !== undefined;\n }\n _needToReCreateComponentInstance(changes) {\n // Note: square brackets property accessor is safe for Closure compiler optimizations (the\n // `changes` argument of the `ngOnChanges` lifecycle hook retains the names of the fields that\n // were changed).\n return changes['ngComponentOutlet'] !== undefined ||\n changes['ngComponentOutletContent'] !== undefined ||\n changes['ngComponentOutletInjector'] !== undefined ||\n this._needToReCreateNgModuleInstance(changes);\n }\n /** @nodoc */\n ngOnChanges(changes) {\n if (this._needToReCreateComponentInstance(changes)) {\n this._viewContainerRef.clear();\n this._inputsUsed.clear();\n this._componentRef = undefined;\n if (this.ngComponentOutlet) {\n const injector = this.ngComponentOutletInjector || this._viewContainerRef.parentInjector;\n if (this._needToReCreateNgModuleInstance(changes)) {\n this._moduleRef?.destroy();\n if (this.ngComponentOutletNgModule) {\n this._moduleRef =\n createNgModule(this.ngComponentOutletNgModule, getParentInjector(injector));\n }\n else if (this.ngComponentOutletNgModuleFactory) {\n this._moduleRef =\n this.ngComponentOutletNgModuleFactory.create(getParentInjector(injector));\n }\n else {\n this._moduleRef = undefined;\n }\n }\n this._componentRef = this._viewContainerRef.createComponent(this.ngComponentOutlet, {\n injector,\n ngModuleRef: this._moduleRef,\n projectableNodes: this.ngComponentOutletContent,\n });\n }\n }\n }\n /** @nodoc */\n ngDoCheck() {\n if (this._componentRef) {\n if (this.ngComponentOutletInputs) {\n for (const inputName of Object.keys(this.ngComponentOutletInputs)) {\n this._inputsUsed.set(inputName, true);\n }\n }\n this._applyInputStateDiff(this._componentRef);\n }\n }\n /** @nodoc */\n ngOnDestroy() {\n this._moduleRef?.destroy();\n }\n _applyInputStateDiff(componentRef) {\n for (const [inputName, touched] of this._inputsUsed) {\n if (!touched) {\n // The input that was previously active no longer exists and needs to be set to undefined.\n componentRef.setInput(inputName, undefined);\n this._inputsUsed.delete(inputName);\n }\n else {\n // Since touched is true, it can be asserted that the inputs object is not empty.\n componentRef.setInput(inputName, this.ngComponentOutletInputs[inputName]);\n this._inputsUsed.set(inputName, false);\n }\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgComponentOutlet, deps: [{ token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgComponentOutlet, isStandalone: true, selector: \"[ngComponentOutlet]\", inputs: { ngComponentOutlet: \"ngComponentOutlet\", ngComponentOutletInputs: \"ngComponentOutletInputs\", ngComponentOutletInjector: \"ngComponentOutletInjector\", ngComponentOutletContent: \"ngComponentOutletContent\", ngComponentOutletNgModule: \"ngComponentOutletNgModule\", ngComponentOutletNgModuleFactory: \"ngComponentOutletNgModuleFactory\" }, usesOnChanges: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgComponentOutlet, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngComponentOutlet]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }], propDecorators: { ngComponentOutlet: [{\n type: Input\n }], ngComponentOutletInputs: [{\n type: Input\n }], ngComponentOutletInjector: [{\n type: Input\n }], ngComponentOutletContent: [{\n type: Input\n }], ngComponentOutletNgModule: [{\n type: Input\n }], ngComponentOutletNgModuleFactory: [{\n type: Input\n }] } });\n// Helper function that returns an Injector instance of a parent NgModule.\nfunction getParentInjector(injector) {\n const parentNgModule = injector.get(NgModuleRef);\n return parentNgModule.injector;\n}\n\n/**\n * @publicApi\n */\nclass NgForOfContext {\n constructor($implicit, ngForOf, index, count) {\n this.$implicit = $implicit;\n this.ngForOf = ngForOf;\n this.index = index;\n this.count = count;\n }\n get first() {\n return this.index === 0;\n }\n get last() {\n return this.index === this.count - 1;\n }\n get even() {\n return this.index % 2 === 0;\n }\n get odd() {\n return !this.even;\n }\n}\n/**\n * A [structural directive](guide/structural-directives) that renders\n * a template for each item in a collection.\n * The directive is placed on an element, which becomes the parent\n * of the cloned templates.\n *\n * The `ngForOf` directive is generally used in the\n * [shorthand form](guide/structural-directives#asterisk) `*ngFor`.\n * In this form, the template to be rendered for each iteration is the content\n * of an anchor element containing the directive.\n *\n * The following example shows the shorthand syntax with some options,\n * contained in an `
` element.\n *\n * ```\n *
...
\n * ```\n *\n * The shorthand form expands into a long form that uses the `ngForOf` selector\n * on an `` element.\n * The content of the `` element is the `
` element that held the\n * short-form directive.\n *\n * Here is the expanded version of the short-form example.\n *\n * ```\n * \n *
...
\n * \n * ```\n *\n * Angular automatically expands the shorthand syntax as it compiles the template.\n * The context for each embedded view is logically merged to the current component\n * context according to its lexical position.\n *\n * When using the shorthand syntax, Angular allows only [one structural directive\n * on an element](guide/structural-directives#one-per-element).\n * If you want to iterate conditionally, for example,\n * put the `*ngIf` on a container element that wraps the `*ngFor` element.\n * For further discussion, see\n * [Structural Directives](guide/structural-directives#one-per-element).\n *\n * @usageNotes\n *\n * ### Local variables\n *\n * `NgForOf` provides exported values that can be aliased to local variables.\n * For example:\n *\n * ```\n *
\n * {{i}}/{{users.length}}. {{user}} default\n *
\n * ```\n *\n * The following exported values can be aliased to local variables:\n *\n * - `$implicit: T`: The value of the individual items in the iterable (`ngForOf`).\n * - `ngForOf: NgIterable`: The value of the iterable expression. Useful when the expression is\n * more complex then a property access, for example when using the async pipe (`userStreams |\n * async`).\n * - `index: number`: The index of the current item in the iterable.\n * - `count: number`: The length of the iterable.\n * - `first: boolean`: True when the item is the first item in the iterable.\n * - `last: boolean`: True when the item is the last item in the iterable.\n * - `even: boolean`: True when the item has an even index in the iterable.\n * - `odd: boolean`: True when the item has an odd index in the iterable.\n *\n * ### Change propagation\n *\n * When the contents of the iterator changes, `NgForOf` makes the corresponding changes to the DOM:\n *\n * * When an item is added, a new instance of the template is added to the DOM.\n * * When an item is removed, its template instance is removed from the DOM.\n * * When items are reordered, their respective templates are reordered in the DOM.\n *\n * Angular uses object identity to track insertions and deletions within the iterator and reproduce\n * those changes in the DOM. This has important implications for animations and any stateful\n * controls that are present, such as `` elements that accept user input. Inserted rows can\n * be animated in, deleted rows can be animated out, and unchanged rows retain any unsaved state\n * such as user input.\n * For more on animations, see [Transitions and Triggers](guide/transition-and-triggers).\n *\n * The identities of elements in the iterator can change while the data does not.\n * This can happen, for example, if the iterator is produced from an RPC to the server, and that\n * RPC is re-run. Even if the data hasn't changed, the second response produces objects with\n * different identities, and Angular must tear down the entire DOM and rebuild it (as if all old\n * elements were deleted and all new elements inserted).\n *\n * To avoid this expensive operation, you can customize the default tracking algorithm.\n * by supplying the `trackBy` option to `NgForOf`.\n * `trackBy` takes a function that has two arguments: `index` and `item`.\n * If `trackBy` is given, Angular tracks changes by the return value of the function.\n *\n * @see [Structural Directives](guide/structural-directives)\n * @ngModule CommonModule\n * @publicApi\n */\nclass NgForOf {\n /**\n * The value of the iterable expression, which can be used as a\n * [template input variable](guide/structural-directives#shorthand).\n */\n set ngForOf(ngForOf) {\n this._ngForOf = ngForOf;\n this._ngForOfDirty = true;\n }\n /**\n * Specifies a custom `TrackByFunction` to compute the identity of items in an iterable.\n *\n * If a custom `TrackByFunction` is not provided, `NgForOf` will use the item's [object\n * identity](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is)\n * as the key.\n *\n * `NgForOf` uses the computed key to associate items in an iterable with DOM elements\n * it produces for these items.\n *\n * A custom `TrackByFunction` is useful to provide good user experience in cases when items in an\n * iterable rendered using `NgForOf` have a natural identifier (for example, custom ID or a\n * primary key), and this iterable could be updated with new object instances that still\n * represent the same underlying entity (for example, when data is re-fetched from the server,\n * and the iterable is recreated and re-rendered, but most of the data is still the same).\n *\n * @see {@link TrackByFunction}\n */\n set ngForTrackBy(fn) {\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && fn != null && typeof fn !== 'function') {\n console.warn(`trackBy must be a function, but received ${JSON.stringify(fn)}. ` +\n `See https://angular.io/api/common/NgForOf#change-propagation for more information.`);\n }\n this._trackByFn = fn;\n }\n get ngForTrackBy() {\n return this._trackByFn;\n }\n constructor(_viewContainer, _template, _differs) {\n this._viewContainer = _viewContainer;\n this._template = _template;\n this._differs = _differs;\n this._ngForOf = null;\n this._ngForOfDirty = true;\n this._differ = null;\n }\n /**\n * A reference to the template that is stamped out for each item in the iterable.\n * @see [template reference variable](guide/template-reference-variables)\n */\n set ngForTemplate(value) {\n // TODO(TS2.1): make TemplateRef>> once we move to TS v2.1\n // The current type is too restrictive; a template that just uses index, for example,\n // should be acceptable.\n if (value) {\n this._template = value;\n }\n }\n /**\n * Applies the changes when needed.\n * @nodoc\n */\n ngDoCheck() {\n if (this._ngForOfDirty) {\n this._ngForOfDirty = false;\n // React on ngForOf changes only once all inputs have been initialized\n const value = this._ngForOf;\n if (!this._differ && value) {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n try {\n // CAUTION: this logic is duplicated for production mode below, as the try-catch\n // is only present in development builds.\n this._differ = this._differs.find(value).create(this.ngForTrackBy);\n }\n catch {\n let errorMessage = `Cannot find a differ supporting object '${value}' of type '` +\n `${getTypeName(value)}'. NgFor only supports binding to Iterables, such as Arrays.`;\n if (typeof value === 'object') {\n errorMessage += ' Did you mean to use the keyvalue pipe?';\n }\n throw new ɵRuntimeError(-2200 /* RuntimeErrorCode.NG_FOR_MISSING_DIFFER */, errorMessage);\n }\n }\n else {\n // CAUTION: this logic is duplicated for development mode above, as the try-catch\n // is only present in development builds.\n this._differ = this._differs.find(value).create(this.ngForTrackBy);\n }\n }\n }\n if (this._differ) {\n const changes = this._differ.diff(this._ngForOf);\n if (changes)\n this._applyChanges(changes);\n }\n }\n _applyChanges(changes) {\n const viewContainer = this._viewContainer;\n changes.forEachOperation((item, adjustedPreviousIndex, currentIndex) => {\n if (item.previousIndex == null) {\n // NgForOf is never \"null\" or \"undefined\" here because the differ detected\n // that a new item needs to be inserted from the iterable. This implies that\n // there is an iterable value for \"_ngForOf\".\n viewContainer.createEmbeddedView(this._template, new NgForOfContext(item.item, this._ngForOf, -1, -1), currentIndex === null ? undefined : currentIndex);\n }\n else if (currentIndex == null) {\n viewContainer.remove(adjustedPreviousIndex === null ? undefined : adjustedPreviousIndex);\n }\n else if (adjustedPreviousIndex !== null) {\n const view = viewContainer.get(adjustedPreviousIndex);\n viewContainer.move(view, currentIndex);\n applyViewChange(view, item);\n }\n });\n for (let i = 0, ilen = viewContainer.length; i < ilen; i++) {\n const viewRef = viewContainer.get(i);\n const context = viewRef.context;\n context.index = i;\n context.count = ilen;\n context.ngForOf = this._ngForOf;\n }\n changes.forEachIdentityChange((record) => {\n const viewRef = viewContainer.get(record.currentIndex);\n applyViewChange(viewRef, record);\n });\n }\n /**\n * Asserts the correct type of the context for the template that `NgForOf` will render.\n *\n * The presence of this method is a signal to the Ivy template type-check compiler that the\n * `NgForOf` structural directive renders its template with a specific context type.\n */\n static ngTemplateContextGuard(dir, ctx) {\n return true;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgForOf, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: i0.IterableDiffers }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgForOf, isStandalone: true, selector: \"[ngFor][ngForOf]\", inputs: { ngForOf: \"ngForOf\", ngForTrackBy: \"ngForTrackBy\", ngForTemplate: \"ngForTemplate\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgForOf, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngFor][ngForOf]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: i0.IterableDiffers }], propDecorators: { ngForOf: [{\n type: Input\n }], ngForTrackBy: [{\n type: Input\n }], ngForTemplate: [{\n type: Input\n }] } });\nfunction applyViewChange(view, record) {\n view.context.$implicit = record.item;\n}\nfunction getTypeName(type) {\n return type['name'] || typeof type;\n}\n\n/**\n * A structural directive that conditionally includes a template based on the value of\n * an expression coerced to Boolean.\n * When the expression evaluates to true, Angular renders the template\n * provided in a `then` clause, and when false or null,\n * Angular renders the template provided in an optional `else` clause. The default\n * template for the `else` clause is blank.\n *\n * A [shorthand form](guide/structural-directives#asterisk) of the directive,\n * `*ngIf=\"condition\"`, is generally used, provided\n * as an attribute of the anchor element for the inserted template.\n * Angular expands this into a more explicit version, in which the anchor element\n * is contained in an `` element.\n *\n * Simple form with shorthand syntax:\n *\n * ```\n *
Content to render when condition is true.
\n * ```\n *\n * Simple form with expanded syntax:\n *\n * ```\n *
Content to render when condition is\n * true.
\n * ```\n *\n * Form with an \"else\" block:\n *\n * ```\n *
Content to render when condition is true.
\n * Content to render when condition is false.\n * ```\n *\n * Shorthand form with \"then\" and \"else\" blocks:\n *\n * ```\n * \n * Content to render when condition is true.\n * Content to render when condition is false.\n * ```\n *\n * Form with storing the value locally:\n *\n * ```\n *
{{value}}
\n * Content to render when value is null.\n * ```\n *\n * @usageNotes\n *\n * The `*ngIf` directive is most commonly used to conditionally show an inline template,\n * as seen in the following example.\n * The default `else` template is blank.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfSimple'}\n *\n * ### Showing an alternative template using `else`\n *\n * To display a template when `expression` evaluates to false, use an `else` template\n * binding as shown in the following example.\n * The `else` binding points to an `` element labeled `#elseBlock`.\n * The template can be defined anywhere in the component view, but is typically placed right after\n * `ngIf` for readability.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfElse'}\n *\n * ### Using an external `then` template\n *\n * In the previous example, the then-clause template is specified inline, as the content of the\n * tag that contains the `ngIf` directive. You can also specify a template that is defined\n * externally, by referencing a labeled `` element. When you do this, you can\n * change which template to use at runtime, as shown in the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfThenElse'}\n *\n * ### Storing a conditional result in a variable\n *\n * You might want to show a set of properties from the same object. If you are waiting\n * for asynchronous data, the object can be undefined.\n * In this case, you can use `ngIf` and store the result of the condition in a local\n * variable as shown in the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfAs'}\n *\n * This code uses only one `AsyncPipe`, so only one subscription is created.\n * The conditional statement stores the result of `userStream|async` in the local variable `user`.\n * You can then bind the local `user` repeatedly.\n *\n * The conditional displays the data only if `userStream` returns a value,\n * so you don't need to use the\n * safe-navigation-operator (`?.`)\n * to guard against null values when accessing properties.\n * You can display an alternative template while waiting for the data.\n *\n * ### Shorthand syntax\n *\n * The shorthand syntax `*ngIf` expands into two separate template specifications\n * for the \"then\" and \"else\" clauses. For example, consider the following shorthand statement,\n * that is meant to show a loading page while waiting for data to be loaded.\n *\n * ```\n *
\n * ...\n *
\n *\n * \n *
Loading...
\n * \n * ```\n *\n * You can see that the \"else\" clause references the ``\n * with the `#loading` label, and the template for the \"then\" clause\n * is provided as the content of the anchor element.\n *\n * However, when Angular expands the shorthand syntax, it creates\n * another `` tag, with `ngIf` and `ngIfElse` directives.\n * The anchor element containing the template for the \"then\" clause becomes\n * the content of this unlabeled `` tag.\n *\n * ```\n * \n *
\n * ...\n *
\n * \n *\n * \n *
Loading...
\n * \n * ```\n *\n * The presence of the implicit template object has implications for the nesting of\n * structural directives. For more on this subject, see\n * [Structural Directives](guide/structural-directives#one-per-element).\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass NgIf {\n constructor(_viewContainer, templateRef) {\n this._viewContainer = _viewContainer;\n this._context = new NgIfContext();\n this._thenTemplateRef = null;\n this._elseTemplateRef = null;\n this._thenViewRef = null;\n this._elseViewRef = null;\n this._thenTemplateRef = templateRef;\n }\n /**\n * The Boolean expression to evaluate as the condition for showing a template.\n */\n set ngIf(condition) {\n this._context.$implicit = this._context.ngIf = condition;\n this._updateView();\n }\n /**\n * A template to show if the condition expression evaluates to true.\n */\n set ngIfThen(templateRef) {\n assertTemplate('ngIfThen', templateRef);\n this._thenTemplateRef = templateRef;\n this._thenViewRef = null; // clear previous view if any.\n this._updateView();\n }\n /**\n * A template to show if the condition expression evaluates to false.\n */\n set ngIfElse(templateRef) {\n assertTemplate('ngIfElse', templateRef);\n this._elseTemplateRef = templateRef;\n this._elseViewRef = null; // clear previous view if any.\n this._updateView();\n }\n _updateView() {\n if (this._context.$implicit) {\n if (!this._thenViewRef) {\n this._viewContainer.clear();\n this._elseViewRef = null;\n if (this._thenTemplateRef) {\n this._thenViewRef =\n this._viewContainer.createEmbeddedView(this._thenTemplateRef, this._context);\n }\n }\n }\n else {\n if (!this._elseViewRef) {\n this._viewContainer.clear();\n this._thenViewRef = null;\n if (this._elseTemplateRef) {\n this._elseViewRef =\n this._viewContainer.createEmbeddedView(this._elseTemplateRef, this._context);\n }\n }\n }\n }\n /**\n * Asserts the correct type of the context for the template that `NgIf` will render.\n *\n * The presence of this method is a signal to the Ivy template type-check compiler that the\n * `NgIf` structural directive renders its template with a specific context type.\n */\n static ngTemplateContextGuard(dir, ctx) {\n return true;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgIf, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgIf, isStandalone: true, selector: \"[ngIf]\", inputs: { ngIf: \"ngIf\", ngIfThen: \"ngIfThen\", ngIfElse: \"ngIfElse\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgIf, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngIf]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }], propDecorators: { ngIf: [{\n type: Input\n }], ngIfThen: [{\n type: Input\n }], ngIfElse: [{\n type: Input\n }] } });\n/**\n * @publicApi\n */\nclass NgIfContext {\n constructor() {\n this.$implicit = null;\n this.ngIf = null;\n }\n}\nfunction assertTemplate(property, templateRef) {\n const isTemplateRefOrNull = !!(!templateRef || templateRef.createEmbeddedView);\n if (!isTemplateRefOrNull) {\n throw new Error(`${property} must be a TemplateRef, but received '${ɵstringify(templateRef)}'.`);\n }\n}\n\n/**\n * A constant indicating a type of comparison that NgSwitch uses to match cases. Extracted to a\n * separate file to facilitate G3 patches.\n */\nconst NG_SWITCH_USE_STRICT_EQUALS = true;\n\nclass SwitchView {\n constructor(_viewContainerRef, _templateRef) {\n this._viewContainerRef = _viewContainerRef;\n this._templateRef = _templateRef;\n this._created = false;\n }\n create() {\n this._created = true;\n this._viewContainerRef.createEmbeddedView(this._templateRef);\n }\n destroy() {\n this._created = false;\n this._viewContainerRef.clear();\n }\n enforceState(created) {\n if (created && !this._created) {\n this.create();\n }\n else if (!created && this._created) {\n this.destroy();\n }\n }\n}\n/**\n * @ngModule CommonModule\n *\n * @description\n * The `[ngSwitch]` directive on a container specifies an expression to match against.\n * The expressions to match are provided by `ngSwitchCase` directives on views within the container.\n * - Every view that matches is rendered.\n * - If there are no matches, a view with the `ngSwitchDefault` directive is rendered.\n * - Elements within the `[NgSwitch]` statement but outside of any `NgSwitchCase`\n * or `ngSwitchDefault` directive are preserved at the location.\n *\n * @usageNotes\n * Define a container element for the directive, and specify the switch expression\n * to match against as an attribute:\n *\n * ```\n * \n * ```\n *\n * Within the container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * \n * ...\n * ...\n * ...\n * \n * ```\n *\n * ### Usage Examples\n *\n * The following example shows how to use more than one case to display the same view:\n *\n * ```\n * \n * \n * ...\n * ...\n * ...\n * \n * ...\n * \n * ```\n *\n * The following example shows how cases can be nested:\n * ```\n * \n * ...\n * ...\n * ...\n * \n * \n * \n * \n * \n * ...\n * \n * ```\n *\n * @publicApi\n * @see {@link NgSwitchCase}\n * @see {@link NgSwitchDefault}\n * @see [Structural Directives](guide/structural-directives)\n *\n */\nclass NgSwitch {\n constructor() {\n this._defaultViews = [];\n this._defaultUsed = false;\n this._caseCount = 0;\n this._lastCaseCheckIndex = 0;\n this._lastCasesMatched = false;\n }\n set ngSwitch(newValue) {\n this._ngSwitch = newValue;\n if (this._caseCount === 0) {\n this._updateDefaultCases(true);\n }\n }\n /** @internal */\n _addCase() {\n return this._caseCount++;\n }\n /** @internal */\n _addDefault(view) {\n this._defaultViews.push(view);\n }\n /** @internal */\n _matchCase(value) {\n const matched = NG_SWITCH_USE_STRICT_EQUALS ? value === this._ngSwitch : value == this._ngSwitch;\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && matched !== (value == this._ngSwitch)) {\n console.warn(ɵformatRuntimeError(2001 /* RuntimeErrorCode.EQUALITY_NG_SWITCH_DIFFERENCE */, 'As of Angular v17 the NgSwitch directive uses strict equality comparison === instead of == to match different cases. ' +\n `Previously the case value \"${stringifyValue(value)}\" matched switch expression value \"${stringifyValue(this._ngSwitch)}\", but this is no longer the case with the stricter equality check. ` +\n 'Your comparison results return different results using === vs. == and you should adjust your ngSwitch expression and / or values to conform with the strict equality requirements.'));\n }\n this._lastCasesMatched = this._lastCasesMatched || matched;\n this._lastCaseCheckIndex++;\n if (this._lastCaseCheckIndex === this._caseCount) {\n this._updateDefaultCases(!this._lastCasesMatched);\n this._lastCaseCheckIndex = 0;\n this._lastCasesMatched = false;\n }\n return matched;\n }\n _updateDefaultCases(useDefault) {\n if (this._defaultViews.length > 0 && useDefault !== this._defaultUsed) {\n this._defaultUsed = useDefault;\n for (const defaultView of this._defaultViews) {\n defaultView.enforceState(useDefault);\n }\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitch, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgSwitch, isStandalone: true, selector: \"[ngSwitch]\", inputs: { ngSwitch: \"ngSwitch\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitch, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngSwitch]',\n standalone: true,\n }]\n }], propDecorators: { ngSwitch: [{\n type: Input\n }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n * Provides a switch case expression to match against an enclosing `ngSwitch` expression.\n * When the expressions match, the given `NgSwitchCase` template is rendered.\n * If multiple match expressions match the switch expression value, all of them are displayed.\n *\n * @usageNotes\n *\n * Within a switch container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * \n * ...\n * ...\n * ...\n * \n * ```\n *\n * Each switch-case statement contains an in-line HTML template or template reference\n * that defines the subtree to be selected if the value of the match expression\n * matches the value of the switch expression.\n *\n * Unlike JavaScript, which uses strict equality, Angular uses loose equality.\n * This means that the empty string, `\"\"` matches 0.\n *\n * @publicApi\n * @see {@link NgSwitch}\n * @see {@link NgSwitchDefault}\n *\n */\nclass NgSwitchCase {\n constructor(viewContainer, templateRef, ngSwitch) {\n this.ngSwitch = ngSwitch;\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !ngSwitch) {\n throwNgSwitchProviderNotFoundError('ngSwitchCase', 'NgSwitchCase');\n }\n ngSwitch._addCase();\n this._view = new SwitchView(viewContainer, templateRef);\n }\n /**\n * Performs case matching. For internal use only.\n * @nodoc\n */\n ngDoCheck() {\n this._view.enforceState(this.ngSwitch._matchCase(this.ngSwitchCase));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitchCase, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: NgSwitch, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgSwitchCase, isStandalone: true, selector: \"[ngSwitchCase]\", inputs: { ngSwitchCase: \"ngSwitchCase\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitchCase, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngSwitchCase]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: NgSwitch, decorators: [{\n type: Optional\n }, {\n type: Host\n }] }], propDecorators: { ngSwitchCase: [{\n type: Input\n }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that is rendered when no `NgSwitchCase` expressions\n * match the `NgSwitch` expression.\n * This statement should be the final case in an `NgSwitch`.\n *\n * @publicApi\n * @see {@link NgSwitch}\n * @see {@link NgSwitchCase}\n *\n */\nclass NgSwitchDefault {\n constructor(viewContainer, templateRef, ngSwitch) {\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !ngSwitch) {\n throwNgSwitchProviderNotFoundError('ngSwitchDefault', 'NgSwitchDefault');\n }\n ngSwitch._addDefault(new SwitchView(viewContainer, templateRef));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitchDefault, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: NgSwitch, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgSwitchDefault, isStandalone: true, selector: \"[ngSwitchDefault]\", ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgSwitchDefault, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngSwitchDefault]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: NgSwitch, decorators: [{\n type: Optional\n }, {\n type: Host\n }] }] });\nfunction throwNgSwitchProviderNotFoundError(attrName, directiveName) {\n throw new ɵRuntimeError(2000 /* RuntimeErrorCode.PARENT_NG_SWITCH_NOT_FOUND */, `An element with the \"${attrName}\" attribute ` +\n `(matching the \"${directiveName}\" directive) must be located inside an element with the \"ngSwitch\" attribute ` +\n `(matching \"NgSwitch\" directive)`);\n}\nfunction stringifyValue(value) {\n return typeof value === 'string' ? `'${value}'` : String(value);\n}\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n * \n * there is nothing\n * there is one\n * there are a few\n * \n * ```\n *\n * @description\n *\n * Adds / removes DOM sub-trees based on a numeric value. Tailored for pluralization.\n *\n * Displays DOM sub-trees that match the switch expression value, or failing that, DOM sub-trees\n * that match the switch expression's pluralization category.\n *\n * To use this directive you must provide a container element that sets the `[ngPlural]` attribute\n * to a switch expression. Inner elements with a `[ngPluralCase]` will display based on their\n * expression:\n * - if `[ngPluralCase]` is set to a value starting with `=`, it will only display if the value\n * matches the switch expression exactly,\n * - otherwise, the view will be treated as a \"category match\", and will only display if exact\n * value matches aren't found and the value maps to its category for the defined locale.\n *\n * See http://cldr.unicode.org/index/cldr-spec/plural-rules\n *\n * @publicApi\n */\nclass NgPlural {\n constructor(_localization) {\n this._localization = _localization;\n this._caseViews = {};\n }\n set ngPlural(value) {\n this._updateView(value);\n }\n addCase(value, switchView) {\n this._caseViews[value] = switchView;\n }\n _updateView(switchValue) {\n this._clearViews();\n const cases = Object.keys(this._caseViews);\n const key = getPluralCategory(switchValue, cases, this._localization);\n this._activateView(this._caseViews[key]);\n }\n _clearViews() {\n if (this._activeView)\n this._activeView.destroy();\n }\n _activateView(view) {\n if (view) {\n this._activeView = view;\n this._activeView.create();\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgPlural, deps: [{ token: NgLocalization }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgPlural, isStandalone: true, selector: \"[ngPlural]\", inputs: { ngPlural: \"ngPlural\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgPlural, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngPlural]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: NgLocalization }], propDecorators: { ngPlural: [{\n type: Input\n }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that will be added/removed from the parent {@link NgPlural} when the\n * given expression matches the plural expression according to CLDR rules.\n *\n * @usageNotes\n * ```\n * \n * ...\n * ...\n * \n *```\n *\n * See {@link NgPlural} for more details and example.\n *\n * @publicApi\n */\nclass NgPluralCase {\n constructor(value, template, viewContainer, ngPlural) {\n this.value = value;\n const isANumber = !isNaN(Number(value));\n ngPlural.addCase(isANumber ? `=${value}` : value, new SwitchView(viewContainer, template));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgPluralCase, deps: [{ token: 'ngPluralCase', attribute: true }, { token: i0.TemplateRef }, { token: i0.ViewContainerRef }, { token: NgPlural, host: true }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgPluralCase, isStandalone: true, selector: \"[ngPluralCase]\", ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgPluralCase, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngPluralCase]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Attribute,\n args: ['ngPluralCase']\n }] }, { type: i0.TemplateRef }, { type: i0.ViewContainerRef }, { type: NgPlural, decorators: [{\n type: Host\n }] }] });\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n *\n * Set the font of the containing element to the result of an expression.\n *\n * ```\n * ...\n * ```\n *\n * Set the width of the containing element to a pixel value returned by an expression.\n *\n * ```\n * ...\n * ```\n *\n * Set a collection of style values using an expression that returns key-value pairs.\n *\n * ```\n * ...\n * ```\n *\n * @description\n *\n * An attribute directive that updates styles for the containing HTML element.\n * Sets one or more style properties, specified as colon-separated key-value pairs.\n * The key is a style name, with an optional `.` suffix\n * (such as 'top.px', 'font-style.em').\n * The value is an expression to be evaluated.\n * The resulting non-null value, expressed in the given unit,\n * is assigned to the given style property.\n * If the result of evaluation is null, the corresponding style is removed.\n *\n * @publicApi\n */\nclass NgStyle {\n constructor(_ngEl, _differs, _renderer) {\n this._ngEl = _ngEl;\n this._differs = _differs;\n this._renderer = _renderer;\n this._ngStyle = null;\n this._differ = null;\n }\n set ngStyle(values) {\n this._ngStyle = values;\n if (!this._differ && values) {\n this._differ = this._differs.find(values).create();\n }\n }\n ngDoCheck() {\n if (this._differ) {\n const changes = this._differ.diff(this._ngStyle);\n if (changes) {\n this._applyChanges(changes);\n }\n }\n }\n _setStyle(nameAndUnit, value) {\n const [name, unit] = nameAndUnit.split('.');\n const flags = name.indexOf('-') === -1 ? undefined : RendererStyleFlags2.DashCase;\n if (value != null) {\n this._renderer.setStyle(this._ngEl.nativeElement, name, unit ? `${value}${unit}` : value, flags);\n }\n else {\n this._renderer.removeStyle(this._ngEl.nativeElement, name, flags);\n }\n }\n _applyChanges(changes) {\n changes.forEachRemovedItem((record) => this._setStyle(record.key, null));\n changes.forEachAddedItem((record) => this._setStyle(record.key, record.currentValue));\n changes.forEachChangedItem((record) => this._setStyle(record.key, record.currentValue));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgStyle, deps: [{ token: i0.ElementRef }, { token: i0.KeyValueDiffers }, { token: i0.Renderer2 }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgStyle, isStandalone: true, selector: \"[ngStyle]\", inputs: { ngStyle: \"ngStyle\" }, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgStyle, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngStyle]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ElementRef }, { type: i0.KeyValueDiffers }, { type: i0.Renderer2 }], propDecorators: { ngStyle: [{\n type: Input,\n args: ['ngStyle']\n }] } });\n\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Inserts an embedded view from a prepared `TemplateRef`.\n *\n * You can attach a context object to the `EmbeddedViewRef` by setting `[ngTemplateOutletContext]`.\n * `[ngTemplateOutletContext]` should be an object, the object's keys will be available for binding\n * by the local template `let` declarations.\n *\n * @usageNotes\n * ```\n * \n * ```\n *\n * Using the key `$implicit` in the context object will set its value as default.\n *\n * ### Example\n *\n * {@example common/ngTemplateOutlet/ts/module.ts region='NgTemplateOutlet'}\n *\n * @publicApi\n */\nclass NgTemplateOutlet {\n constructor(_viewContainerRef) {\n this._viewContainerRef = _viewContainerRef;\n this._viewRef = null;\n /**\n * A context object to attach to the {@link EmbeddedViewRef}. This should be an\n * object, the object's keys will be available for binding by the local template `let`\n * declarations.\n * Using the key `$implicit` in the context object will set its value as default.\n */\n this.ngTemplateOutletContext = null;\n /**\n * A string defining the template reference and optionally the context object for the template.\n */\n this.ngTemplateOutlet = null;\n /** Injector to be used within the embedded view. */\n this.ngTemplateOutletInjector = null;\n }\n ngOnChanges(changes) {\n if (this._shouldRecreateView(changes)) {\n const viewContainerRef = this._viewContainerRef;\n if (this._viewRef) {\n viewContainerRef.remove(viewContainerRef.indexOf(this._viewRef));\n }\n // If there is no outlet, clear the destroyed view ref.\n if (!this.ngTemplateOutlet) {\n this._viewRef = null;\n return;\n }\n // Create a context forward `Proxy` that will always bind to the user-specified context,\n // without having to destroy and re-create views whenever the context changes.\n const viewContext = this._createContextForwardProxy();\n this._viewRef = viewContainerRef.createEmbeddedView(this.ngTemplateOutlet, viewContext, {\n injector: this.ngTemplateOutletInjector ?? undefined,\n });\n }\n }\n /**\n * We need to re-create existing embedded view if either is true:\n * - the outlet changed.\n * - the injector changed.\n */\n _shouldRecreateView(changes) {\n return !!changes['ngTemplateOutlet'] || !!changes['ngTemplateOutletInjector'];\n }\n /**\n * For a given outlet instance, we create a proxy object that delegates\n * to the user-specified context. This allows changing, or swapping out\n * the context object completely without having to destroy/re-create the view.\n */\n _createContextForwardProxy() {\n return new Proxy({}, {\n set: (_target, prop, newValue) => {\n if (!this.ngTemplateOutletContext) {\n return false;\n }\n return Reflect.set(this.ngTemplateOutletContext, prop, newValue);\n },\n get: (_target, prop, receiver) => {\n if (!this.ngTemplateOutletContext) {\n return undefined;\n }\n return Reflect.get(this.ngTemplateOutletContext, prop, receiver);\n },\n });\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgTemplateOutlet, deps: [{ token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"17.1.0\", type: NgTemplateOutlet, isStandalone: true, selector: \"[ngTemplateOutlet]\", inputs: { ngTemplateOutletContext: \"ngTemplateOutletContext\", ngTemplateOutlet: \"ngTemplateOutlet\", ngTemplateOutletInjector: \"ngTemplateOutletInjector\" }, usesOnChanges: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgTemplateOutlet, decorators: [{\n type: Directive,\n args: [{\n selector: '[ngTemplateOutlet]',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ViewContainerRef }], propDecorators: { ngTemplateOutletContext: [{\n type: Input\n }], ngTemplateOutlet: [{\n type: Input\n }], ngTemplateOutletInjector: [{\n type: Input\n }] } });\n\n/**\n * A collection of Angular directives that are likely to be used in each and every Angular\n * application.\n */\nconst COMMON_DIRECTIVES = [\n NgClass,\n NgComponentOutlet,\n NgForOf,\n NgIf,\n NgTemplateOutlet,\n NgStyle,\n NgSwitch,\n NgSwitchCase,\n NgSwitchDefault,\n NgPlural,\n NgPluralCase,\n];\n\nfunction invalidPipeArgumentError(type, value) {\n return new ɵRuntimeError(2100 /* RuntimeErrorCode.INVALID_PIPE_ARGUMENT */, ngDevMode && `InvalidPipeArgument: '${value}' for pipe '${ɵstringify(type)}'`);\n}\n\nclass SubscribableStrategy {\n createSubscription(async, updateLatestValue) {\n // Subscription can be side-effectful, and we don't want any signal reads which happen in the\n // side effect of the subscription to be tracked by a component's template when that\n // subscription is triggered via the async pipe. So we wrap the subscription in `untracked` to\n // decouple from the current reactive context.\n //\n // `untracked` also prevents signal _writes_ which happen in the subscription side effect from\n // being treated as signal writes during the template evaluation (which throws errors).\n return untracked(() => async.subscribe({\n next: updateLatestValue,\n error: (e) => {\n throw e;\n }\n }));\n }\n dispose(subscription) {\n // See the comment in `createSubscription` above on the use of `untracked`.\n untracked(() => subscription.unsubscribe());\n }\n}\nclass PromiseStrategy {\n createSubscription(async, updateLatestValue) {\n return async.then(updateLatestValue, e => {\n throw e;\n });\n }\n dispose(subscription) { }\n}\nconst _promiseStrategy = new PromiseStrategy();\nconst _subscribableStrategy = new SubscribableStrategy();\n/**\n * @ngModule CommonModule\n * @description\n *\n * Unwraps a value from an asynchronous primitive.\n *\n * The `async` pipe subscribes to an `Observable` or `Promise` and returns the latest value it has\n * emitted. When a new value is emitted, the `async` pipe marks the component to be checked for\n * changes. When the component gets destroyed, the `async` pipe unsubscribes automatically to avoid\n * potential memory leaks. When the reference of the expression changes, the `async` pipe\n * automatically unsubscribes from the old `Observable` or `Promise` and subscribes to the new one.\n *\n * @usageNotes\n *\n * ### Examples\n *\n * This example binds a `Promise` to the view. Clicking the `Resolve` button resolves the\n * promise.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipePromise'}\n *\n * It's also possible to use `async` with Observables. The example below binds the `time` Observable\n * to the view. The Observable continuously updates the view with the current time.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipeObservable'}\n *\n * @publicApi\n */\nclass AsyncPipe {\n constructor(ref) {\n this._latestValue = null;\n this._subscription = null;\n this._obj = null;\n this._strategy = null;\n // Assign `ref` into `this._ref` manually instead of declaring `_ref` in the constructor\n // parameter list, as the type of `this._ref` includes `null` unlike the type of `ref`.\n this._ref = ref;\n }\n ngOnDestroy() {\n if (this._subscription) {\n this._dispose();\n }\n // Clear the `ChangeDetectorRef` and its association with the view data, to mitigate\n // potential memory leaks in Observables that could otherwise cause the view data to\n // be retained.\n // https://github.com/angular/angular/issues/17624\n this._ref = null;\n }\n transform(obj) {\n if (!this._obj) {\n if (obj) {\n this._subscribe(obj);\n }\n return this._latestValue;\n }\n if (obj !== this._obj) {\n this._dispose();\n return this.transform(obj);\n }\n return this._latestValue;\n }\n _subscribe(obj) {\n this._obj = obj;\n this._strategy = this._selectStrategy(obj);\n this._subscription = this._strategy.createSubscription(obj, (value) => this._updateLatestValue(obj, value));\n }\n _selectStrategy(obj) {\n if (ɵisPromise(obj)) {\n return _promiseStrategy;\n }\n if (ɵisSubscribable(obj)) {\n return _subscribableStrategy;\n }\n throw invalidPipeArgumentError(AsyncPipe, obj);\n }\n _dispose() {\n // Note: `dispose` is only called if a subscription has been initialized before, indicating\n // that `this._strategy` is also available.\n this._strategy.dispose(this._subscription);\n this._latestValue = null;\n this._subscription = null;\n this._obj = null;\n }\n _updateLatestValue(async, value) {\n if (async === this._obj) {\n this._latestValue = value;\n // Note: `this._ref` is only cleared in `ngOnDestroy` so is known to be available when a\n // value is being updated.\n this._ref.markForCheck();\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: AsyncPipe, deps: [{ token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: AsyncPipe, isStandalone: true, name: \"async\", pure: false }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: AsyncPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'async',\n pure: false,\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.ChangeDetectorRef }] });\n\n/**\n * Transforms text to all lower case.\n *\n * @see {@link UpperCasePipe}\n * @see {@link TitleCasePipe}\n * @usageNotes\n *\n * The following example defines a view that allows the user to enter\n * text, and then uses the pipe to convert the input text to all lower case.\n *\n * \n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass LowerCasePipe {\n transform(value) {\n if (value == null)\n return null;\n if (typeof value !== 'string') {\n throw invalidPipeArgumentError(LowerCasePipe, value);\n }\n return value.toLowerCase();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LowerCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: LowerCasePipe, isStandalone: true, name: \"lowercase\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LowerCasePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'lowercase',\n standalone: true,\n }]\n }] });\n//\n// Regex below matches any Unicode word and number compatible with ES5. In ES2018 the same result\n// can be achieved by using /[0-9\\p{L}]\\S*/gu and also known as Unicode Property Escapes\n// (https://2ality.com/2017/07/regexp-unicode-property-escapes.html). Since there is no\n// transpilation of this functionality down to ES5 without external tool, the only solution is\n// to use already transpiled form. Example can be found here -\n// https://mothereff.in/regexpu#input=var+regex+%3D+%2F%5B0-9%5Cp%7BL%7D%5D%5CS*%2Fgu%3B%0A%0A&unicodePropertyEscape=1\n//\nconst unicodeWordMatch = /(?:[0-9A-Za-z\\xAA\\xB5\\xBA\\xC0-\\xD6\\xD8-\\xF6\\xF8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u037F\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u052F\\u0531-\\u0556\\u0559\\u0560-\\u0588\\u05D0-\\u05EA\\u05EF-\\u05F2\\u0620-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0800-\\u0815\\u081A\\u0824\\u0828\\u0840-\\u0858\\u0860-\\u086A\\u0870-\\u0887\\u0889-\\u088E\\u08A0-\\u08C9\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971-\\u0980\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u09FC\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0AF9\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C39\\u0C3D\\u0C58-\\u0C5A\\u0C5D\\u0C60\\u0C61\\u0C80\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDD\\u0CDE\\u0CE0\\u0CE1\\u0CF1\\u0CF2\\u0D04-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D\\u0D4E\\u0D54-\\u0D56\\u0D5F-\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E86-\\u0E8A\\u0E8C-\\u0EA3\\u0EA5\\u0EA7-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC-\\u0EDF\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8C\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10C7\\u10CD\\u10D0-\\u10FA\\u10FC-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F5\\u13F8-\\u13FD\\u1401-\\u166C\\u166F-\\u167F\\u1681-\\u169A\\u16A0-\\u16EA\\u16F1-\\u16F8\\u1700-\\u1711\\u171F-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1878\\u1880-\\u1884\\u1887-\\u18A8\\u18AA\\u18B0-\\u18F5\\u1900-\\u191E\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19AB\\u19B0-\\u19C9\\u1A00-\\u1A16\\u1A20-\\u1A54\\u1AA7\\u1B05-\\u1B33\\u1B45-\\u1B4C\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1BBA-\\u1BE5\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1C80-\\u1C88\\u1C90-\\u1CBA\\u1CBD-\\u1CBF\\u1CE9-\\u1CEC\\u1CEE-\\u1CF3\\u1CF5\\u1CF6\\u1CFA\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u209C\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2183\\u2184\\u2C00-\\u2CE4\\u2CEB-\\u2CEE\\u2CF2\\u2CF3\\u2D00-\\u2D25\\u2D27\\u2D2D\\u2D30-\\u2D67\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005\\u3006\\u3031-\\u3035\\u303B\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312F\\u3131-\\u318E\\u31A0-\\u31BF\\u31F0-\\u31FF\\u3400-\\u4DBF\\u4E00-\\uA48C\\uA4D0-\\uA4FD\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA66E\\uA67F-\\uA69D\\uA6A0-\\uA6E5\\uA717-\\uA71F\\uA722-\\uA788\\uA78B-\\uA7CA\\uA7D0\\uA7D1\\uA7D3\\uA7D5-\\uA7D9\\uA7F2-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA8F2-\\uA8F7\\uA8FB\\uA8FD\\uA8FE\\uA90A-\\uA925\\uA930-\\uA946\\uA960-\\uA97C\\uA984-\\uA9B2\\uA9CF\\uA9E0-\\uA9E4\\uA9E6-\\uA9EF\\uA9FA-\\uA9FE\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAA60-\\uAA76\\uAA7A\\uAA7E-\\uAAAF\\uAAB1\\uAAB5\\uAAB6\\uAAB9-\\uAABD\\uAAC0\\uAAC2\\uAADB-\\uAADD\\uAAE0-\\uAAEA\\uAAF2-\\uAAF4\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uAB30-\\uAB5A\\uAB5C-\\uAB69\\uAB70-\\uABE2\\uAC00-\\uD7A3\\uD7B0-\\uD7C6\\uD7CB-\\uD7FB\\uF900-\\uFA6D\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC]|\\uD800[\\uDC00-\\uDC0B\\u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* Transforms text to title case.\n * Capitalizes the first letter of each word and transforms the\n * rest of the word to lower case.\n * Words are delimited by any whitespace character, such as a space, tab, or line-feed character.\n *\n * @see {@link LowerCasePipe}\n * @see {@link UpperCasePipe}\n *\n * @usageNotes\n * The following example shows the result of transforming various strings into title case.\n *\n * \n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass TitleCasePipe {\n transform(value) {\n if (value == null)\n return null;\n if (typeof value !== 'string') {\n throw invalidPipeArgumentError(TitleCasePipe, value);\n }\n return value.replace(unicodeWordMatch, (txt => txt[0].toUpperCase() + txt.slice(1).toLowerCase()));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: TitleCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: TitleCasePipe, isStandalone: true, name: \"titlecase\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: TitleCasePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'titlecase',\n standalone: true,\n }]\n }] });\n/**\n * Transforms text to all upper case.\n * @see {@link LowerCasePipe}\n * @see {@link TitleCasePipe}\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass UpperCasePipe {\n transform(value) {\n if (value == null)\n return null;\n if (typeof value !== 'string') {\n throw invalidPipeArgumentError(UpperCasePipe, value);\n }\n return value.toUpperCase();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: UpperCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: UpperCasePipe, isStandalone: true, name: \"uppercase\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: UpperCasePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'uppercase',\n standalone: true,\n }]\n }] });\n\n/**\n * The default date format of Angular date pipe, which corresponds to the following format:\n * `'MMM d,y'` (e.g. `Jun 15, 2015`)\n */\nconst DEFAULT_DATE_FORMAT = 'mediumDate';\n\n/**\n * Optionally-provided default timezone to use for all instances of `DatePipe` (such as `'+0430'`).\n * If the value isn't provided, the `DatePipe` will use the end-user's local system timezone.\n *\n * @deprecated use DATE_PIPE_DEFAULT_OPTIONS token to configure DatePipe\n */\nconst DATE_PIPE_DEFAULT_TIMEZONE = new InjectionToken('DATE_PIPE_DEFAULT_TIMEZONE');\n/**\n * DI token that allows to provide default configuration for the `DatePipe` instances in an\n * application. The value is an object which can include the following fields:\n * - `dateFormat`: configures the default date format. If not provided, the `DatePipe`\n * will use the 'mediumDate' as a value.\n * - `timezone`: configures the default timezone. If not provided, the `DatePipe` will\n * use the end-user's local system timezone.\n *\n * @see {@link DatePipeConfig}\n *\n * @usageNotes\n *\n * Various date pipe default values can be overwritten by providing this token with\n * the value that has this interface.\n *\n * For example:\n *\n * Override the default date format by providing a value using the token:\n * ```typescript\n * providers: [\n * {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {dateFormat: 'shortDate'}}\n * ]\n * ```\n *\n * Override the default timezone by providing a value using the token:\n * ```typescript\n * providers: [\n * {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {timezone: '-1200'}}\n * ]\n * ```\n */\nconst DATE_PIPE_DEFAULT_OPTIONS = new InjectionToken('DATE_PIPE_DEFAULT_OPTIONS');\n// clang-format off\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date value according to locale rules.\n *\n * `DatePipe` is executed only when it detects a pure change to the input value.\n * A pure change is either a change to a primitive input value\n * (such as `String`, `Number`, `Boolean`, or `Symbol`),\n * or a changed object reference (such as `Date`, `Array`, `Function`, or `Object`).\n *\n * Note that mutating a `Date` object does not cause the pipe to be rendered again.\n * To ensure that the pipe is executed, you must create a new `Date` object.\n *\n * Only the `en-US` locale data comes with Angular. To localize dates\n * in another language, you must import the corresponding locale data.\n * See the [I18n guide](guide/i18n-common-format-data-locale) for more information.\n *\n * The time zone of the formatted value can be specified either by passing it in as the second\n * parameter of the pipe, or by setting the default through the `DATE_PIPE_DEFAULT_OPTIONS`\n * injection token. The value that is passed in as the second parameter takes precedence over\n * the one defined using the injection token.\n *\n * @see {@link formatDate}\n *\n *\n * @usageNotes\n *\n * The result of this pipe is not reevaluated when the input is mutated. To avoid the need to\n * reformat the date on every change-detection cycle, treat the date as an immutable object\n * and change the reference when the pipe needs to run again.\n *\n * ### Pre-defined format options\n *\n * | Option | Equivalent to | Examples (given in `en-US` locale) |\n * |---------------|-------------------------------------|-------------------------------------------------|\n * | `'short'` | `'M/d/yy, h:mm a'` | `6/15/15, 9:03 AM` |\n * | `'medium'` | `'MMM d, y, h:mm:ss a'` | `Jun 15, 2015, 9:03:01 AM` |\n * | `'long'` | `'MMMM d, y, h:mm:ss a z'` | `June 15, 2015 at 9:03:01 AM GMT+1` |\n * | `'full'` | `'EEEE, MMMM d, y, h:mm:ss a zzzz'` | `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00` |\n * | `'shortDate'` | `'M/d/yy'` | `6/15/15` |\n * | `'mediumDate'`| `'MMM d, y'` | `Jun 15, 2015` |\n * | `'longDate'` | `'MMMM d, y'` | `June 15, 2015` |\n * | `'fullDate'` | `'EEEE, MMMM d, y'` | `Monday, June 15, 2015` |\n * | `'shortTime'` | `'h:mm a'` | `9:03 AM` |\n * | `'mediumTime'`| `'h:mm:ss a'` | `9:03:01 AM` |\n * | `'longTime'` | `'h:mm:ss a z'` | `9:03:01 AM GMT+1` |\n * | `'fullTime'` | `'h:mm:ss a zzzz'` | `9:03:01 AM GMT+01:00` |\n *\n * ### Custom format options\n *\n * You can construct a format string using symbols to specify the components\n * of a date-time value, as described in the following table.\n * Format details depend on the locale.\n * Fields marked with (*) are only available in the extra data set for the given locale.\n *\n * | Field type | Format | Description | Example Value |\n * |-------------------- |-------------|---------------------------------------------------------------|------------------------------------------------------------|\n * | Era | G, GG & GGG | Abbreviated | AD |\n * | | GGGG | Wide | Anno Domini |\n * | | GGGGG | Narrow | A |\n * | Year | y | Numeric: minimum digits | 2, 20, 201, 2017, 20173 |\n * | | yy | Numeric: 2 digits + zero padded | 02, 20, 01, 17, 73 |\n * | | yyy | Numeric: 3 digits + zero padded | 002, 020, 201, 2017, 20173 |\n * | | yyyy | Numeric: 4 digits or more + zero padded | 0002, 0020, 0201, 2017, 20173 |\n * | Week-numbering year | Y | Numeric: minimum digits | 2, 20, 201, 2017, 20173 |\n * | | YY | Numeric: 2 digits + zero padded | 02, 20, 01, 17, 73 |\n * | | YYY | Numeric: 3 digits + zero padded | 002, 020, 201, 2017, 20173 |\n * | | YYYY | Numeric: 4 digits or more + zero padded | 0002, 0020, 0201, 2017, 20173 |\n * | Month | M | Numeric: 1 digit | 9, 12 |\n * | | MM | Numeric: 2 digits + zero padded | 09, 12 |\n * | | MMM | Abbreviated | Sep |\n * | | MMMM | Wide | September |\n * | | MMMMM | Narrow | S |\n * | Month standalone | L | Numeric: 1 digit | 9, 12 |\n * | | LL | Numeric: 2 digits + zero padded | 09, 12 |\n * | | LLL | Abbreviated | Sep |\n * | | LLLL | Wide | September |\n * | | LLLLL | Narrow | S |\n * | Week of year | w | Numeric: minimum digits | 1... 53 |\n * | | ww | Numeric: 2 digits + zero padded | 01... 53 |\n * | Week of month | W | Numeric: 1 digit | 1... 5 |\n * | Day of month | d | Numeric: minimum digits | 1 |\n * | | dd | Numeric: 2 digits + zero padded | 01 |\n * | Week day | E, EE & EEE | Abbreviated | Tue |\n * | | EEEE | Wide | Tuesday |\n * | | EEEEE | Narrow | T |\n * | | EEEEEE | Short | Tu |\n * | Week day standalone | c, cc | Numeric: 1 digit | 2 |\n * | | ccc | Abbreviated | Tue |\n * | | cccc | Wide | Tuesday |\n * | | ccccc | Narrow | T |\n * | | cccccc | Short | Tu |\n * | Period | a, aa & aaa | Abbreviated | am/pm or AM/PM |\n * | | aaaa | Wide (fallback to `a` when missing) | ante meridiem/post meridiem |\n * | | aaaaa | Narrow | a/p |\n * | Period* | B, BB & BBB | Abbreviated | mid. |\n * | | BBBB | Wide | am, pm, midnight, noon, morning, afternoon, evening, night |\n * | | BBBBB | Narrow | md |\n * | Period standalone* | b, bb & bbb | Abbreviated | mid. |\n * | | bbbb | Wide | am, pm, midnight, noon, morning, afternoon, evening, night |\n * | | bbbbb | Narrow | md |\n * | Hour 1-12 | h | Numeric: minimum digits | 1, 12 |\n * | | hh | Numeric: 2 digits + zero padded | 01, 12 |\n * | Hour 0-23 | H | Numeric: minimum digits | 0, 23 |\n * | | HH | Numeric: 2 digits + zero padded | 00, 23 |\n * | Minute | m | Numeric: minimum digits | 8, 59 |\n * | | mm | Numeric: 2 digits + zero padded | 08, 59 |\n * | Second | s | Numeric: minimum digits | 0... 59 |\n * | | ss | Numeric: 2 digits + zero padded | 00... 59 |\n * | Fractional seconds | S | Numeric: 1 digit | 0... 9 |\n * | | SS | Numeric: 2 digits + zero padded | 00... 99 |\n * | | SSS | Numeric: 3 digits + zero padded (= milliseconds) | 000... 999 |\n * | Zone | z, zz & zzz | Short specific non location format (fallback to O) | GMT-8 |\n * | | zzzz | Long specific non location format (fallback to OOOO) | GMT-08:00 |\n * | | Z, ZZ & ZZZ | ISO8601 basic format | -0800 |\n * | | ZZZZ | Long localized GMT format | GMT-8:00 |\n * | | ZZZZZ | ISO8601 extended format + Z indicator for offset 0 (= XXXXX) | -08:00 |\n * | | O, OO & OOO | Short localized GMT format | GMT-8 |\n * | | OOOO | Long localized GMT format | GMT-08:00 |\n *\n *\n * ### Format examples\n *\n * These examples transform a date into various formats,\n * assuming that `dateObj` is a JavaScript `Date` object for\n * year: 2015, month: 6, day: 15, hour: 21, minute: 43, second: 11,\n * given in the local time for the `en-US` locale.\n *\n * ```\n * {{ dateObj | date }} // output is 'Jun 15, 2015'\n * {{ dateObj | date:'medium' }} // output is 'Jun 15, 2015, 9:43:11 PM'\n * {{ dateObj | date:'shortTime' }} // output is '9:43 PM'\n * {{ dateObj | date:'mm:ss' }} // output is '43:11'\n * {{ dateObj | date:\"MMM dd, yyyy 'at' hh:mm a\" }} // output is 'Jun 15, 2015 at 09:43 PM'\n * ```\n *\n * ### Usage example\n *\n * The following component uses a date pipe to display the current date in different formats.\n *\n * ```\n * @Component({\n * selector: 'date-pipe',\n * template: `
\n *
Today is {{today | date}}
\n *
Or if you prefer, {{today | date:'fullDate'}}
\n *
The time is {{today | date:'h:mm a z'}}
\n *
`\n * })\n * // Get the current date and time as a date-time value.\n * export class DatePipeComponent {\n * today: number = Date.now();\n * }\n * ```\n *\n * @publicApi\n */\n// clang-format on\nclass DatePipe {\n constructor(locale, defaultTimezone, defaultOptions) {\n this.locale = locale;\n this.defaultTimezone = defaultTimezone;\n this.defaultOptions = defaultOptions;\n }\n transform(value, format, timezone, locale) {\n if (value == null || value === '' || value !== value)\n return null;\n try {\n const _format = format ?? this.defaultOptions?.dateFormat ?? DEFAULT_DATE_FORMAT;\n const _timezone = timezone ?? this.defaultOptions?.timezone ?? this.defaultTimezone ?? undefined;\n return formatDate(value, _format, locale || this.locale, _timezone);\n }\n catch (error) {\n throw invalidPipeArgumentError(DatePipe, error.message);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: DatePipe, deps: [{ token: LOCALE_ID }, { token: DATE_PIPE_DEFAULT_TIMEZONE, optional: true }, { token: DATE_PIPE_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: DatePipe, isStandalone: true, name: \"date\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: DatePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'date',\n pure: true,\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [LOCALE_ID]\n }] }, { type: undefined, decorators: [{\n type: Inject,\n args: [DATE_PIPE_DEFAULT_TIMEZONE]\n }, {\n type: Optional\n }] }, { type: undefined, decorators: [{\n type: Inject,\n args: [DATE_PIPE_DEFAULT_OPTIONS]\n }, {\n type: Optional\n }] }] });\n\nconst _INTERPOLATION_REGEXP = /#/g;\n/**\n * @ngModule CommonModule\n * @description\n *\n * Maps a value to a string that pluralizes the value according to locale rules.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nPluralPipeComponent'}\n *\n * @publicApi\n */\nclass I18nPluralPipe {\n constructor(_localization) {\n this._localization = _localization;\n }\n /**\n * @param value the number to be formatted\n * @param pluralMap an object that mimics the ICU format, see\n * https://unicode-org.github.io/icu/userguide/format_parse/messages/.\n * @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by\n * default).\n */\n transform(value, pluralMap, locale) {\n if (value == null)\n return '';\n if (typeof pluralMap !== 'object' || pluralMap === null) {\n throw invalidPipeArgumentError(I18nPluralPipe, pluralMap);\n }\n const key = getPluralCategory(value, Object.keys(pluralMap), this._localization, locale);\n return pluralMap[key].replace(_INTERPOLATION_REGEXP, value.toString());\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nPluralPipe, deps: [{ token: NgLocalization }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nPluralPipe, isStandalone: true, name: \"i18nPlural\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nPluralPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'i18nPlural',\n pure: true,\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: NgLocalization }] });\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Generic selector that displays the string that matches the current value.\n *\n * If none of the keys of the `mapping` match the `value`, then the content\n * of the `other` key is returned when present, otherwise an empty string is returned.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nSelectPipeComponent'}\n *\n * @publicApi\n */\nclass I18nSelectPipe {\n /**\n * @param value a string to be internationalized.\n * @param mapping an object that indicates the text that should be displayed\n * for different values of the provided `value`.\n */\n transform(value, mapping) {\n if (value == null)\n return '';\n if (typeof mapping !== 'object' || typeof value !== 'string') {\n throw invalidPipeArgumentError(I18nSelectPipe, mapping);\n }\n if (mapping.hasOwnProperty(value)) {\n return mapping[value];\n }\n if (mapping.hasOwnProperty('other')) {\n return mapping['other'];\n }\n return '';\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nSelectPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nSelectPipe, isStandalone: true, name: \"i18nSelect\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: I18nSelectPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'i18nSelect',\n pure: true,\n standalone: true,\n }]\n }] });\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Converts a value into its JSON-format representation. Useful for debugging.\n *\n * @usageNotes\n *\n * The following component uses a JSON pipe to convert an object\n * to JSON format, and displays the string in both formats for comparison.\n *\n * {@example common/pipes/ts/json_pipe.ts region='JsonPipe'}\n *\n * @publicApi\n */\nclass JsonPipe {\n /**\n * @param value A value of any type to convert into a JSON-format string.\n */\n transform(value) {\n return JSON.stringify(value, null, 2);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: JsonPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: JsonPipe, isStandalone: true, name: \"json\", pure: false }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: JsonPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'json',\n pure: false,\n standalone: true,\n }]\n }] });\n\nfunction makeKeyValuePair(key, value) {\n return { key: key, value: value };\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms Object or Map into an array of key value pairs.\n *\n * The output array will be ordered by keys.\n * By default the comparator will be by Unicode point value.\n * You can optionally pass a compareFn if your keys are complex types.\n *\n * @usageNotes\n * ### Examples\n *\n * This examples show how an Object or a Map can be iterated by ngFor with the use of this\n * keyvalue pipe.\n *\n * {@example common/pipes/ts/keyvalue_pipe.ts region='KeyValuePipe'}\n *\n * @publicApi\n */\nclass KeyValuePipe {\n constructor(differs) {\n this.differs = differs;\n this.keyValues = [];\n this.compareFn = defaultComparator;\n }\n transform(input, compareFn = defaultComparator) {\n if (!input || (!(input instanceof Map) && typeof input !== 'object')) {\n return null;\n }\n if (!this.differ) {\n // make a differ for whatever type we've been passed in\n this.differ = this.differs.find(input).create();\n }\n const differChanges = this.differ.diff(input);\n const compareFnChanged = compareFn !== this.compareFn;\n if (differChanges) {\n this.keyValues = [];\n differChanges.forEachItem((r) => {\n this.keyValues.push(makeKeyValuePair(r.key, r.currentValue));\n });\n }\n if (differChanges || compareFnChanged) {\n this.keyValues.sort(compareFn);\n this.compareFn = compareFn;\n }\n return this.keyValues;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: KeyValuePipe, deps: [{ token: i0.KeyValueDiffers }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: KeyValuePipe, isStandalone: true, name: \"keyvalue\", pure: false }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: KeyValuePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'keyvalue',\n pure: false,\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: i0.KeyValueDiffers }] });\nfunction defaultComparator(keyValueA, keyValueB) {\n const a = keyValueA.key;\n const b = keyValueB.key;\n // if same exit with 0;\n if (a === b)\n return 0;\n // make sure that undefined are at the end of the sort.\n if (a === undefined)\n return 1;\n if (b === undefined)\n return -1;\n // make sure that nulls are at the end of the sort.\n if (a === null)\n return 1;\n if (b === null)\n return -1;\n if (typeof a == 'string' && typeof b == 'string') {\n return a < b ? -1 : 1;\n }\n if (typeof a == 'number' && typeof b == 'number') {\n return a - b;\n }\n if (typeof a == 'boolean' && typeof b == 'boolean') {\n return a < b ? -1 : 1;\n }\n // `a` and `b` are of different types. Compare their string values.\n const aString = String(a);\n const bString = String(b);\n return aString == bString ? 0 : aString < bString ? -1 : 1;\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a value according to digit options and locale rules.\n * Locale determines group sizing and separator,\n * decimal point character, and other locale-specific configurations.\n *\n * @see {@link formatNumber}\n *\n * @usageNotes\n *\n * ### digitsInfo\n *\n * The value's decimal representation is specified by the `digitsInfo`\n * parameter, written in the following format: \n *\n * ```\n * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}\n * ```\n *\n * - `minIntegerDigits`:\n * The minimum number of integer digits before the decimal point.\n * Default is 1.\n *\n * - `minFractionDigits`:\n * The minimum number of digits after the decimal point.\n * Default is 0.\n *\n * - `maxFractionDigits`:\n * The maximum number of digits after the decimal point.\n * Default is 3.\n *\n * If the formatted value is truncated it will be rounded using the \"to-nearest\" method:\n *\n * ```\n * {{3.6 | number: '1.0-0'}}\n * \n *\n * {{-3.6 | number:'1.0-0'}}\n * \n * ```\n *\n * ### locale\n *\n * `locale` will format a value according to locale rules.\n * Locale determines group sizing and separator,\n * decimal point character, and other locale-specific configurations.\n *\n * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n *\n * See [Setting your app locale](guide/i18n-common-locale-id).\n *\n * ### Example\n *\n * The following code shows how the pipe transforms values\n * according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * \n *\n * @publicApi\n */\nclass DecimalPipe {\n constructor(_locale) {\n this._locale = _locale;\n }\n /**\n * @param value The value to be formatted.\n * @param digitsInfo Sets digit and decimal representation.\n * [See more](#digitsinfo).\n * @param locale Specifies what locale format rules to use.\n * [See more](#locale).\n */\n transform(value, digitsInfo, locale) {\n if (!isValue(value))\n return null;\n locale = locale || this._locale;\n try {\n const num = strToNumber(value);\n return formatNumber(num, locale, digitsInfo);\n }\n catch (error) {\n throw invalidPipeArgumentError(DecimalPipe, error.message);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: DecimalPipe, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: DecimalPipe, isStandalone: true, name: \"number\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: DecimalPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'number',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [LOCALE_ID]\n }] }] });\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a percentage\n * string, formatted according to locale rules that determine group sizing and\n * separator, decimal-point character, and other locale-specific\n * configurations.\n *\n * @see {@link formatPercent}\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * \n *\n * @publicApi\n */\nclass PercentPipe {\n constructor(_locale) {\n this._locale = _locale;\n }\n /**\n *\n * @param value The number to be formatted as a percentage.\n * @param digitsInfo Decimal representation options, specified by a string\n * in the following format: \n * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}.\n * - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n * Default is `1`.\n * - `minFractionDigits`: The minimum number of digits after the decimal point.\n * Default is `0`.\n * - `maxFractionDigits`: The maximum number of digits after the decimal point.\n * Default is `0`.\n * @param locale A locale code for the locale format rules to use.\n * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n * See [Setting your app locale](guide/i18n-common-locale-id).\n */\n transform(value, digitsInfo, locale) {\n if (!isValue(value))\n return null;\n locale = locale || this._locale;\n try {\n const num = strToNumber(value);\n return formatPercent(num, locale, digitsInfo);\n }\n catch (error) {\n throw invalidPipeArgumentError(PercentPipe, error.message);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PercentPipe, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: PercentPipe, isStandalone: true, name: \"percent\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PercentPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'percent',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [LOCALE_ID]\n }] }] });\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a currency string, formatted according to locale rules\n * that determine group sizing and separator, decimal-point character,\n * and other locale-specific configurations.\n *\n *\n * @see {@link getCurrencySymbol}\n * @see {@link formatCurrency}\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * \n *\n * @publicApi\n */\nclass CurrencyPipe {\n constructor(_locale, _defaultCurrencyCode = 'USD') {\n this._locale = _locale;\n this._defaultCurrencyCode = _defaultCurrencyCode;\n }\n /**\n *\n * @param value The number to be formatted as currency.\n * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code,\n * such as `USD` for the US dollar and `EUR` for the euro. The default currency code can be\n * configured using the `DEFAULT_CURRENCY_CODE` injection token.\n * @param display The format for the currency indicator. One of the following:\n * - `code`: Show the code (such as `USD`).\n * - `symbol`(default): Show the symbol (such as `$`).\n * - `symbol-narrow`: Use the narrow symbol for locales that have two symbols for their\n * currency.\n * For example, the Canadian dollar CAD has the symbol `CA$` and the symbol-narrow `$`. If the\n * locale has no narrow symbol, uses the standard symbol for the locale.\n * - String: Use the given string value instead of a code or a symbol.\n * For example, an empty string will suppress the currency & symbol.\n * - Boolean (marked deprecated in v5): `true` for symbol and false for `code`.\n *\n * @param digitsInfo Decimal representation options, specified by a string\n * in the following format: \n * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}.\n * - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n * Default is `1`.\n * - `minFractionDigits`: The minimum number of digits after the decimal point.\n * Default is `2`.\n * - `maxFractionDigits`: The maximum number of digits after the decimal point.\n * Default is `2`.\n * If not provided, the number will be formatted with the proper amount of digits,\n * depending on what the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) specifies.\n * For example, the Canadian dollar has 2 digits, whereas the Chilean peso has none.\n * @param locale A locale code for the locale format rules to use.\n * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n * See [Setting your app locale](guide/i18n-common-locale-id).\n */\n transform(value, currencyCode = this._defaultCurrencyCode, display = 'symbol', digitsInfo, locale) {\n if (!isValue(value))\n return null;\n locale = locale || this._locale;\n if (typeof display === 'boolean') {\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && console && console.warn) {\n console.warn(`Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are \"code\", \"symbol\" or \"symbol-narrow\".`);\n }\n display = display ? 'symbol' : 'code';\n }\n let currency = currencyCode || this._defaultCurrencyCode;\n if (display !== 'code') {\n if (display === 'symbol' || display === 'symbol-narrow') {\n currency = getCurrencySymbol(currency, display === 'symbol' ? 'wide' : 'narrow', locale);\n }\n else {\n currency = display;\n }\n }\n try {\n const num = strToNumber(value);\n return formatCurrency(num, locale, currency, currencyCode, digitsInfo);\n }\n catch (error) {\n throw invalidPipeArgumentError(CurrencyPipe, error.message);\n }\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: CurrencyPipe, deps: [{ token: LOCALE_ID }, { token: DEFAULT_CURRENCY_CODE }], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: CurrencyPipe, isStandalone: true, name: \"currency\" }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: CurrencyPipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'currency',\n standalone: true,\n }]\n }], ctorParameters: () => [{ type: undefined, decorators: [{\n type: Inject,\n args: [LOCALE_ID]\n }] }, { type: undefined, decorators: [{\n type: Inject,\n args: [DEFAULT_CURRENCY_CODE]\n }] }] });\nfunction isValue(value) {\n return !(value == null || value === '' || value !== value);\n}\n/**\n * Transforms a string into a number (if needed).\n */\nfunction strToNumber(value) {\n // Convert strings to numbers\n if (typeof value === 'string' && !isNaN(Number(value) - parseFloat(value))) {\n return Number(value);\n }\n if (typeof value !== 'number') {\n throw new Error(`${value} is not a number`);\n }\n return value;\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Creates a new `Array` or `String` containing a subset (slice) of the elements.\n *\n * @usageNotes\n *\n * All behavior is based on the expected behavior of the JavaScript API `Array.prototype.slice()`\n * and `String.prototype.slice()`.\n *\n * When operating on an `Array`, the returned `Array` is always a copy even when all\n * the elements are being returned.\n *\n * When operating on a blank value, the pipe returns the blank value.\n *\n * ### List Example\n *\n * This `ngFor` example:\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_list'}\n *\n * produces the following:\n *\n * ```html\n *
b
\n *
c
\n * ```\n *\n * ### String Examples\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_string'}\n *\n * @publicApi\n */\nclass SlicePipe {\n transform(value, start, end) {\n if (value == null)\n return null;\n if (!this.supports(value)) {\n throw invalidPipeArgumentError(SlicePipe, value);\n }\n return value.slice(start, end);\n }\n supports(obj) {\n return typeof obj === 'string' || Array.isArray(obj);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: SlicePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); }\n static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: SlicePipe, isStandalone: true, name: \"slice\", pure: false }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: SlicePipe, decorators: [{\n type: Pipe,\n args: [{\n name: 'slice',\n pure: false,\n standalone: true,\n }]\n }] });\n\n/**\n * @module\n * @description\n * This module provides a set of common Pipes.\n */\n/**\n * A collection of Angular pipes that are likely to be used in each and every application.\n */\nconst COMMON_PIPES = [\n AsyncPipe,\n UpperCasePipe,\n LowerCasePipe,\n JsonPipe,\n SlicePipe,\n DecimalPipe,\n PercentPipe,\n TitleCasePipe,\n CurrencyPipe,\n DatePipe,\n I18nPluralPipe,\n I18nSelectPipe,\n KeyValuePipe,\n];\n\n// Note: This does not contain the location providers,\n// as they need some platform specific implementations to work.\n/**\n * Exports all the basic Angular directives and pipes,\n * such as `NgIf`, `NgForOf`, `DecimalPipe`, and so on.\n * Re-exported by `BrowserModule`, which is included automatically in the root\n * `AppModule` when you create a new app with the CLI `new` command.\n *\n * @publicApi\n */\nclass CommonModule {\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: CommonModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.1.0\", ngImport: i0, type: CommonModule, imports: [NgClass, NgComponentOutlet, NgForOf, NgIf, NgTemplateOutlet, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgPlural, NgPluralCase, AsyncPipe, UpperCasePipe, LowerCasePipe, JsonPipe, SlicePipe, DecimalPipe, PercentPipe, TitleCasePipe, CurrencyPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, KeyValuePipe], exports: [NgClass, NgComponentOutlet, NgForOf, NgIf, NgTemplateOutlet, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgPlural, NgPluralCase, AsyncPipe, UpperCasePipe, LowerCasePipe, JsonPipe, SlicePipe, DecimalPipe, PercentPipe, TitleCasePipe, CurrencyPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, KeyValuePipe] }); }\n static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: CommonModule }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: CommonModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [COMMON_DIRECTIVES, COMMON_PIPES],\n exports: [COMMON_DIRECTIVES, COMMON_PIPES],\n }]\n }] });\n\nconst PLATFORM_BROWSER_ID = 'browser';\nconst PLATFORM_SERVER_ID = 'server';\nconst PLATFORM_WORKER_APP_ID = 'browserWorkerApp';\nconst PLATFORM_WORKER_UI_ID = 'browserWorkerUi';\n/**\n * Returns whether a platform id represents a browser platform.\n * @publicApi\n */\nfunction isPlatformBrowser(platformId) {\n return platformId === PLATFORM_BROWSER_ID;\n}\n/**\n * Returns whether a platform id represents a server platform.\n * @publicApi\n */\nfunction isPlatformServer(platformId) {\n return platformId === PLATFORM_SERVER_ID;\n}\n/**\n * Returns whether a platform id represents a web worker app platform.\n * @publicApi\n * @deprecated This function serves no purpose since the removal of the Webworker platform. It will\n * always return `false`.\n */\nfunction isPlatformWorkerApp(platformId) {\n return platformId === PLATFORM_WORKER_APP_ID;\n}\n/**\n * Returns whether a platform id represents a web worker UI platform.\n * @publicApi\n * @deprecated This function serves no purpose since the removal of the Webworker platform. It will\n * always return `false`.\n */\nfunction isPlatformWorkerUi(platformId) {\n return platformId === PLATFORM_WORKER_UI_ID;\n}\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the common package.\n */\n/**\n * @publicApi\n */\nconst VERSION = new Version('17.1.0');\n\n/**\n * Defines a scroll position manager. Implemented by `BrowserViewportScroller`.\n *\n * @publicApi\n */\nclass ViewportScroller {\n // De-sugared tree-shakable injection\n // See #23917\n /** @nocollapse */\n static { this.ɵprov = ɵɵdefineInjectable({\n token: ViewportScroller,\n providedIn: 'root',\n factory: () => isPlatformBrowser(inject(PLATFORM_ID)) ?\n new BrowserViewportScroller(inject(DOCUMENT), window) :\n new NullViewportScroller()\n }); }\n}\n/**\n * Manages the scroll position for a browser window.\n */\nclass BrowserViewportScroller {\n constructor(document, window) {\n this.document = document;\n this.window = window;\n this.offset = () => [0, 0];\n }\n /**\n * Configures the top offset used when scrolling to an anchor.\n * @param offset A position in screen coordinates (a tuple with x and y values)\n * or a function that returns the top offset position.\n *\n */\n setOffset(offset) {\n if (Array.isArray(offset)) {\n this.offset = () => offset;\n }\n else {\n this.offset = offset;\n }\n }\n /**\n * Retrieves the current scroll position.\n * @returns The position in screen coordinates.\n */\n getScrollPosition() {\n return [this.window.scrollX, this.window.scrollY];\n }\n /**\n * Sets the scroll position.\n * @param position The new position in screen coordinates.\n */\n scrollToPosition(position) {\n this.window.scrollTo(position[0], position[1]);\n }\n /**\n * Scrolls to an element and attempts to focus the element.\n *\n * Note that the function name here is misleading in that the target string may be an ID for a\n * non-anchor element.\n *\n * @param target The ID of an element or name of the anchor.\n *\n * @see https://html.spec.whatwg.org/#the-indicated-part-of-the-document\n * @see https://html.spec.whatwg.org/#scroll-to-fragid\n */\n scrollToAnchor(target) {\n const elSelected = findAnchorFromDocument(this.document, target);\n if (elSelected) {\n this.scrollToElement(elSelected);\n // After scrolling to the element, the spec dictates that we follow the focus steps for the\n // target. Rather than following the robust steps, simply attempt focus.\n //\n // @see https://html.spec.whatwg.org/#get-the-focusable-area\n // @see https://developer.mozilla.org/en-US/docs/Web/API/HTMLOrForeignElement/focus\n // @see https://html.spec.whatwg.org/#focusable-area\n elSelected.focus();\n }\n }\n /**\n * Disables automatic scroll restoration provided by the browser.\n */\n setHistoryScrollRestoration(scrollRestoration) {\n this.window.history.scrollRestoration = scrollRestoration;\n }\n /**\n * Scrolls to an element using the native offset and the specified offset set on this scroller.\n *\n * The offset can be used when we know that there is a floating header and scrolling naively to an\n * element (ex: `scrollIntoView`) leaves the element hidden behind the floating header.\n */\n scrollToElement(el) {\n const rect = el.getBoundingClientRect();\n const left = rect.left + this.window.pageXOffset;\n const top = rect.top + this.window.pageYOffset;\n const offset = this.offset();\n this.window.scrollTo(left - offset[0], top - offset[1]);\n }\n}\nfunction findAnchorFromDocument(document, target) {\n const documentResult = document.getElementById(target) || document.getElementsByName(target)[0];\n if (documentResult) {\n return documentResult;\n }\n // `getElementById` and `getElementsByName` won't pierce through the shadow DOM so we\n // have to traverse the DOM manually and do the lookup through the shadow roots.\n if (typeof document.createTreeWalker === 'function' && document.body &&\n typeof document.body.attachShadow === 'function') {\n const treeWalker = document.createTreeWalker(document.body, NodeFilter.SHOW_ELEMENT);\n let currentNode = treeWalker.currentNode;\n while (currentNode) {\n const shadowRoot = currentNode.shadowRoot;\n if (shadowRoot) {\n // Note that `ShadowRoot` doesn't support `getElementsByName`\n // so we have to fall back to `querySelector`.\n const result = shadowRoot.getElementById(target) || shadowRoot.querySelector(`[name=\"${target}\"]`);\n if (result) {\n return result;\n }\n }\n currentNode = treeWalker.nextNode();\n }\n }\n return null;\n}\n/**\n * Provides an empty implementation of the viewport scroller.\n */\nclass NullViewportScroller {\n /**\n * Empty implementation\n */\n setOffset(offset) { }\n /**\n * Empty implementation\n */\n getScrollPosition() {\n return [0, 0];\n }\n /**\n * Empty implementation\n */\n scrollToPosition(position) { }\n /**\n * Empty implementation\n */\n scrollToAnchor(anchor) { }\n /**\n * Empty implementation\n */\n setHistoryScrollRestoration(scrollRestoration) { }\n}\n\n/**\n * A wrapper around the `XMLHttpRequest` constructor.\n *\n * @publicApi\n */\nclass XhrFactory {\n}\n\n// Converts a string that represents a URL into a URL class instance.\nfunction getUrl(src, win) {\n // Don't use a base URL is the URL is absolute.\n return isAbsoluteUrl(src) ? new URL(src) : new URL(src, win.location.href);\n}\n// Checks whether a URL is absolute (i.e. starts with `http://` or `https://`).\nfunction isAbsoluteUrl(src) {\n return /^https?:\\/\\//.test(src);\n}\n// Given a URL, extract the hostname part.\n// If a URL is a relative one - the URL is returned as is.\nfunction extractHostname(url) {\n return isAbsoluteUrl(url) ? (new URL(url)).hostname : url;\n}\nfunction isValidPath(path) {\n const isString = typeof path === 'string';\n if (!isString || path.trim() === '') {\n return false;\n }\n // Calling new URL() will throw if the path string is malformed\n try {\n const url = new URL(path);\n return true;\n }\n catch {\n return false;\n }\n}\nfunction normalizePath(path) {\n return path.endsWith('/') ? path.slice(0, -1) : path;\n}\nfunction normalizeSrc(src) {\n return src.startsWith('/') ? src.slice(1) : src;\n}\n\n/**\n * Noop image loader that does no transformation to the original src and just returns it as is.\n * This loader is used as a default one if more specific logic is not provided in an app config.\n *\n * @see {@link ImageLoader}\n * @see {@link NgOptimizedImage}\n */\nconst noopImageLoader = (config) => config.src;\n/**\n * Injection token that configures the image loader function.\n *\n * @see {@link ImageLoader}\n * @see {@link NgOptimizedImage}\n * @publicApi\n */\nconst IMAGE_LOADER = new InjectionToken('ImageLoader', {\n providedIn: 'root',\n factory: () => noopImageLoader,\n});\n/**\n * Internal helper function that makes it easier to introduce custom image loaders for the\n * `NgOptimizedImage` directive. It is enough to specify a URL builder function to obtain full DI\n * configuration for a given loader: a DI token corresponding to the actual loader function, plus DI\n * tokens managing preconnect check functionality.\n * @param buildUrlFn a function returning a full URL based on loader's configuration\n * @param exampleUrls example of full URLs for a given loader (used in error messages)\n * @returns a set of DI providers corresponding to the configured image loader\n */\nfunction createImageLoader(buildUrlFn, exampleUrls) {\n return function provideImageLoader(path) {\n if (!isValidPath(path)) {\n throwInvalidPathError(path, exampleUrls || []);\n }\n // The trailing / is stripped (if provided) to make URL construction (concatenation) easier in\n // the individual loader functions.\n path = normalizePath(path);\n const loaderFn = (config) => {\n if (isAbsoluteUrl(config.src)) {\n // Image loader functions expect an image file name (e.g. `my-image.png`)\n // or a relative path + a file name (e.g. `/a/b/c/my-image.png`) as an input,\n // so the final absolute URL can be constructed.\n // When an absolute URL is provided instead - the loader can not\n // build a final URL, thus the error is thrown to indicate that.\n throwUnexpectedAbsoluteUrlError(path, config.src);\n }\n return buildUrlFn(path, { ...config, src: normalizeSrc(config.src) });\n };\n const providers = [{ provide: IMAGE_LOADER, useValue: loaderFn }];\n return providers;\n };\n}\nfunction throwInvalidPathError(path, exampleUrls) {\n throw new ɵRuntimeError(2959 /* RuntimeErrorCode.INVALID_LOADER_ARGUMENTS */, ngDevMode &&\n `Image loader has detected an invalid path (\\`${path}\\`). ` +\n `To fix this, supply a path using one of the following formats: ${exampleUrls.join(' or ')}`);\n}\nfunction throwUnexpectedAbsoluteUrlError(path, url) {\n throw new ɵRuntimeError(2959 /* RuntimeErrorCode.INVALID_LOADER_ARGUMENTS */, ngDevMode &&\n `Image loader has detected a \\`\\` tag with an invalid \\`ngSrc\\` attribute: ${url}. ` +\n `This image loader expects \\`ngSrc\\` to be a relative URL - ` +\n `however the provided value is an absolute URL. ` +\n `To fix this, provide \\`ngSrc\\` as a path relative to the base URL ` +\n `configured for this loader (\\`${path}\\`).`);\n}\n\n/**\n * Function that generates an ImageLoader for [Cloudflare Image\n * Resizing](https://developers.cloudflare.com/images/image-resizing/) and turns it into an Angular\n * provider. Note: Cloudflare has multiple image products - this provider is specifically for\n * Cloudflare Image Resizing; it will not work with Cloudflare Images or Cloudflare Polish.\n *\n * @param path Your domain name, e.g. https://mysite.com\n * @returns Provider that provides an ImageLoader function\n *\n * @publicApi\n */\nconst provideCloudflareLoader = createImageLoader(createCloudflareUrl, ngDevMode ? ['https:///cdn-cgi/image//'] : undefined);\nfunction createCloudflareUrl(path, config) {\n let params = `format=auto`;\n if (config.width) {\n params += `,width=${config.width}`;\n }\n // Cloudflare image URLs format:\n // https://developers.cloudflare.com/images/image-resizing/url-format/\n return `${path}/cdn-cgi/image/${params}/${config.src}`;\n}\n\n/**\n * Name and URL tester for Cloudinary.\n */\nconst cloudinaryLoaderInfo = {\n name: 'Cloudinary',\n testUrl: isCloudinaryUrl\n};\nconst CLOUDINARY_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.cloudinary\\.com\\/.+/;\n/**\n * Tests whether a URL is from Cloudinary CDN.\n */\nfunction isCloudinaryUrl(url) {\n return CLOUDINARY_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for Cloudinary and turns it into an Angular provider.\n *\n * @param path Base URL of your Cloudinary images\n * This URL should match one of the following formats:\n * https://res.cloudinary.com/mysite\n * https://mysite.cloudinary.com\n * https://subdomain.mysite.com\n * @returns Set of providers to configure the Cloudinary loader.\n *\n * @publicApi\n */\nconst provideCloudinaryLoader = createImageLoader(createCloudinaryUrl, ngDevMode ?\n [\n 'https://res.cloudinary.com/mysite', 'https://mysite.cloudinary.com',\n 'https://subdomain.mysite.com'\n ] :\n undefined);\nfunction createCloudinaryUrl(path, config) {\n // Cloudinary image URLformat:\n // https://cloudinary.com/documentation/image_transformations#transformation_url_structure\n // Example of a Cloudinary image URL:\n // https://res.cloudinary.com/mysite/image/upload/c_scale,f_auto,q_auto,w_600/marketing/tile-topics-m.png\n let params = `f_auto,q_auto`; // sets image format and quality to \"auto\"\n if (config.width) {\n params += `,w_${config.width}`;\n }\n return `${path}/image/upload/${params}/${config.src}`;\n}\n\n/**\n * Name and URL tester for ImageKit.\n */\nconst imageKitLoaderInfo = {\n name: 'ImageKit',\n testUrl: isImageKitUrl,\n};\nconst IMAGE_KIT_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.imagekit\\.io\\/.+/;\n/**\n * Tests whether a URL is from ImageKit CDN.\n */\nfunction isImageKitUrl(url) {\n return IMAGE_KIT_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for ImageKit and turns it into an Angular provider.\n *\n * @param path Base URL of your ImageKit images\n * This URL should match one of the following formats:\n * https://ik.imagekit.io/myaccount\n * https://subdomain.mysite.com\n * @returns Set of providers to configure the ImageKit loader.\n *\n * @publicApi\n */\nconst provideImageKitLoader = createImageLoader(createImagekitUrl, ngDevMode ? ['https://ik.imagekit.io/mysite', 'https://subdomain.mysite.com'] : undefined);\nfunction createImagekitUrl(path, config) {\n // Example of an ImageKit image URL:\n // https://ik.imagekit.io/demo/tr:w-300,h-300/medium_cafe_B1iTdD0C.jpg\n const { src, width } = config;\n let urlSegments;\n if (width) {\n const params = `tr:w-${width}`;\n urlSegments = [path, params, src];\n }\n else {\n urlSegments = [path, src];\n }\n return urlSegments.join('/');\n}\n\n/**\n * Name and URL tester for Imgix.\n */\nconst imgixLoaderInfo = {\n name: 'Imgix',\n testUrl: isImgixUrl\n};\nconst IMGIX_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.imgix\\.net\\/.+/;\n/**\n * Tests whether a URL is from Imgix CDN.\n */\nfunction isImgixUrl(url) {\n return IMGIX_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for Imgix and turns it into an Angular provider.\n *\n * @param path path to the desired Imgix origin,\n * e.g. https://somepath.imgix.net or https://images.mysite.com\n * @returns Set of providers to configure the Imgix loader.\n *\n * @publicApi\n */\nconst provideImgixLoader = createImageLoader(createImgixUrl, ngDevMode ? ['https://somepath.imgix.net/'] : undefined);\nfunction createImgixUrl(path, config) {\n const url = new URL(`${path}/${config.src}`);\n // This setting ensures the smallest allowable format is set.\n url.searchParams.set('auto', 'format');\n if (config.width) {\n url.searchParams.set('w', config.width.toString());\n }\n return url.href;\n}\n\n// Assembles directive details string, useful for error messages.\nfunction imgDirectiveDetails(ngSrc, includeNgSrc = true) {\n const ngSrcInfo = includeNgSrc ? `(activated on an element with the \\`ngSrc=\"${ngSrc}\"\\`) ` : '';\n return `The NgOptimizedImage directive ${ngSrcInfo}has detected that`;\n}\n\n/**\n * Asserts that the application is in development mode. Throws an error if the application is in\n * production mode. This assert can be used to make sure that there is no dev-mode code invoked in\n * the prod mode accidentally.\n */\nfunction assertDevMode(checkName) {\n if (!ngDevMode) {\n throw new ɵRuntimeError(2958 /* RuntimeErrorCode.UNEXPECTED_DEV_MODE_CHECK_IN_PROD_MODE */, `Unexpected invocation of the ${checkName} in the prod mode. ` +\n `Please make sure that the prod mode is enabled for production builds.`);\n }\n}\n\n/**\n * Observer that detects whether an image with `NgOptimizedImage`\n * is treated as a Largest Contentful Paint (LCP) element. If so,\n * asserts that the image has the `priority` attribute.\n *\n * Note: this is a dev-mode only class and it does not appear in prod bundles,\n * thus there is no `ngDevMode` use in the code.\n *\n * Based on https://web.dev/lcp/#measure-lcp-in-javascript.\n */\nclass LCPImageObserver {\n constructor() {\n // Map of full image URLs -> original `ngSrc` values.\n this.images = new Map();\n this.window = null;\n this.observer = null;\n assertDevMode('LCP checker');\n const win = inject(DOCUMENT).defaultView;\n if (typeof win !== 'undefined' && typeof PerformanceObserver !== 'undefined') {\n this.window = win;\n this.observer = this.initPerformanceObserver();\n }\n }\n /**\n * Inits PerformanceObserver and subscribes to LCP events.\n * Based on https://web.dev/lcp/#measure-lcp-in-javascript\n */\n initPerformanceObserver() {\n const observer = new PerformanceObserver((entryList) => {\n const entries = entryList.getEntries();\n if (entries.length === 0)\n return;\n // We use the latest entry produced by the `PerformanceObserver` as the best\n // signal on which element is actually an LCP one. As an example, the first image to load on\n // a page, by virtue of being the only thing on the page so far, is often a LCP candidate\n // and gets reported by PerformanceObserver, but isn't necessarily the LCP element.\n const lcpElement = entries[entries.length - 1];\n // Cast to `any` due to missing `element` on the `LargestContentfulPaint` type of entry.\n // See https://developer.mozilla.org/en-US/docs/Web/API/LargestContentfulPaint\n const imgSrc = lcpElement.element?.src ?? '';\n // Exclude `data:` and `blob:` URLs, since they are not supported by the directive.\n if (imgSrc.startsWith('data:') || imgSrc.startsWith('blob:'))\n return;\n const img = this.images.get(imgSrc);\n if (!img)\n return;\n if (!img.priority && !img.alreadyWarnedPriority) {\n img.alreadyWarnedPriority = true;\n logMissingPriorityError(imgSrc);\n }\n if (img.modified && !img.alreadyWarnedModified) {\n img.alreadyWarnedModified = true;\n logModifiedWarning(imgSrc);\n }\n });\n observer.observe({ type: 'largest-contentful-paint', buffered: true });\n return observer;\n }\n registerImage(rewrittenSrc, originalNgSrc, isPriority) {\n if (!this.observer)\n return;\n const newObservedImageState = {\n priority: isPriority,\n modified: false,\n alreadyWarnedModified: false,\n alreadyWarnedPriority: false\n };\n this.images.set(getUrl(rewrittenSrc, this.window).href, newObservedImageState);\n }\n unregisterImage(rewrittenSrc) {\n if (!this.observer)\n return;\n this.images.delete(getUrl(rewrittenSrc, this.window).href);\n }\n updateImage(originalSrc, newSrc) {\n const originalUrl = getUrl(originalSrc, this.window).href;\n const img = this.images.get(originalUrl);\n if (img) {\n img.modified = true;\n this.images.set(getUrl(newSrc, this.window).href, img);\n this.images.delete(originalUrl);\n }\n }\n ngOnDestroy() {\n if (!this.observer)\n return;\n this.observer.disconnect();\n this.images.clear();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LCPImageObserver, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LCPImageObserver, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: LCPImageObserver, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [] });\nfunction logMissingPriorityError(ngSrc) {\n const directiveDetails = imgDirectiveDetails(ngSrc);\n console.error(ɵformatRuntimeError(2955 /* RuntimeErrorCode.LCP_IMG_MISSING_PRIORITY */, `${directiveDetails} this image is the Largest Contentful Paint (LCP) ` +\n `element but was not marked \"priority\". This image should be marked ` +\n `\"priority\" in order to prioritize its loading. ` +\n `To fix this, add the \"priority\" attribute.`));\n}\nfunction logModifiedWarning(ngSrc) {\n const directiveDetails = imgDirectiveDetails(ngSrc);\n console.warn(ɵformatRuntimeError(2964 /* RuntimeErrorCode.LCP_IMG_NGSRC_MODIFIED */, `${directiveDetails} this image is the Largest Contentful Paint (LCP) ` +\n `element and has had its \"ngSrc\" attribute modified. This can cause ` +\n `slower loading performance. It is recommended not to modify the \"ngSrc\" ` +\n `property on any image which could be the LCP element.`));\n}\n\n// Set of origins that are always excluded from the preconnect checks.\nconst INTERNAL_PRECONNECT_CHECK_BLOCKLIST = new Set(['localhost', '127.0.0.1', '0.0.0.0']);\n/**\n * Injection token to configure which origins should be excluded\n * from the preconnect checks. It can either be a single string or an array of strings\n * to represent a group of origins, for example:\n *\n * ```typescript\n * {provide: PRECONNECT_CHECK_BLOCKLIST, useValue: 'https://your-domain.com'}\n * ```\n *\n * or:\n *\n * ```typescript\n * {provide: PRECONNECT_CHECK_BLOCKLIST,\n * useValue: ['https://your-domain-1.com', 'https://your-domain-2.com']}\n * ```\n *\n * @publicApi\n */\nconst PRECONNECT_CHECK_BLOCKLIST = new InjectionToken('PRECONNECT_CHECK_BLOCKLIST');\n/**\n * Contains the logic to detect whether an image, marked with the \"priority\" attribute\n * has a corresponding `` tag in the `document.head`.\n *\n * Note: this is a dev-mode only class, which should not appear in prod bundles,\n * thus there is no `ngDevMode` use in the code.\n */\nclass PreconnectLinkChecker {\n constructor() {\n this.document = inject(DOCUMENT);\n /**\n * Set of tags found on this page.\n * The `null` value indicates that there was no DOM query operation performed.\n */\n this.preconnectLinks = null;\n /*\n * Keep track of all already seen origin URLs to avoid repeating the same check.\n */\n this.alreadySeen = new Set();\n this.window = null;\n this.blocklist = new Set(INTERNAL_PRECONNECT_CHECK_BLOCKLIST);\n assertDevMode('preconnect link checker');\n const win = this.document.defaultView;\n if (typeof win !== 'undefined') {\n this.window = win;\n }\n const blocklist = inject(PRECONNECT_CHECK_BLOCKLIST, { optional: true });\n if (blocklist) {\n this.populateBlocklist(blocklist);\n }\n }\n populateBlocklist(origins) {\n if (Array.isArray(origins)) {\n deepForEach(origins, origin => {\n this.blocklist.add(extractHostname(origin));\n });\n }\n else {\n this.blocklist.add(extractHostname(origins));\n }\n }\n /**\n * Checks that a preconnect resource hint exists in the head for the\n * given src.\n *\n * @param rewrittenSrc src formatted with loader\n * @param originalNgSrc ngSrc value\n */\n assertPreconnect(rewrittenSrc, originalNgSrc) {\n if (!this.window)\n return;\n const imgUrl = getUrl(rewrittenSrc, this.window);\n if (this.blocklist.has(imgUrl.hostname) || this.alreadySeen.has(imgUrl.origin))\n return;\n // Register this origin as seen, so we don't check it again later.\n this.alreadySeen.add(imgUrl.origin);\n if (!this.preconnectLinks) {\n // Note: we query for preconnect links only *once* and cache the results\n // for the entire lifespan of an application, since it's unlikely that the\n // list would change frequently. This allows to make sure there are no\n // performance implications of making extra DOM lookups for each image.\n this.preconnectLinks = this.queryPreconnectLinks();\n }\n if (!this.preconnectLinks.has(imgUrl.origin)) {\n console.warn(ɵformatRuntimeError(2956 /* RuntimeErrorCode.PRIORITY_IMG_MISSING_PRECONNECT_TAG */, `${imgDirectiveDetails(originalNgSrc)} there is no preconnect tag present for this ` +\n `image. Preconnecting to the origin(s) that serve priority images ensures that these ` +\n `images are delivered as soon as possible. To fix this, please add the following ` +\n `element into the of the document:\\n` +\n ` `));\n }\n }\n queryPreconnectLinks() {\n const preconnectUrls = new Set();\n const selector = 'link[rel=preconnect]';\n const links = Array.from(this.document.querySelectorAll(selector));\n for (let link of links) {\n const url = getUrl(link.href, this.window);\n preconnectUrls.add(url.origin);\n }\n return preconnectUrls;\n }\n ngOnDestroy() {\n this.preconnectLinks?.clear();\n this.alreadySeen.clear();\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreconnectLinkChecker, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreconnectLinkChecker, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreconnectLinkChecker, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: () => [] });\n/**\n * Invokes a callback for each element in the array. Also invokes a callback\n * recursively for each nested array.\n */\nfunction deepForEach(input, fn) {\n for (let value of input) {\n Array.isArray(value) ? deepForEach(value, fn) : fn(value);\n }\n}\n\n/**\n * In SSR scenarios, a preload `` element is generated for priority images.\n * Having a large number of preload tags may negatively affect the performance,\n * so we warn developers (by throwing an error) if the number of preloaded images\n * is above a certain threshold. This const specifies this threshold.\n */\nconst DEFAULT_PRELOADED_IMAGES_LIMIT = 5;\n/**\n * Helps to keep track of priority images that already have a corresponding\n * preload tag (to avoid generating multiple preload tags with the same URL).\n *\n * This Set tracks the original src passed into the `ngSrc` input not the src after it has been\n * run through the specified `IMAGE_LOADER`.\n */\nconst PRELOADED_IMAGES = new InjectionToken('NG_OPTIMIZED_PRELOADED_IMAGES', { providedIn: 'root', factory: () => new Set() });\n\n/**\n * @description Contains the logic needed to track and add preload link tags to the `` tag. It\n * will also track what images have already had preload link tags added so as to not duplicate link\n * tags.\n *\n * In dev mode this service will validate that the number of preloaded images does not exceed the\n * configured default preloaded images limit: {@link DEFAULT_PRELOADED_IMAGES_LIMIT}.\n */\nclass PreloadLinkCreator {\n constructor() {\n this.preloadedImages = inject(PRELOADED_IMAGES);\n this.document = inject(DOCUMENT);\n }\n /**\n * @description Add a preload `` to the `` of the `index.html` that is served from the\n * server while using Angular Universal and SSR to kick off image loads for high priority images.\n *\n * The `sizes` (passed in from the user) and `srcset` (parsed and formatted from `ngSrcset`)\n * properties used to set the corresponding attributes, `imagesizes` and `imagesrcset`\n * respectively, on the preload `` tag so that the correctly sized image is preloaded from\n * the CDN.\n *\n * {@link https://web.dev/preload-responsive-images/#imagesrcset-and-imagesizes}\n *\n * @param renderer The `Renderer2` passed in from the directive\n * @param src The original src of the image that is set on the `ngSrc` input.\n * @param srcset The parsed and formatted srcset created from the `ngSrcset` input\n * @param sizes The value of the `sizes` attribute passed in to the `` tag\n */\n createPreloadLinkTag(renderer, src, srcset, sizes) {\n if (ngDevMode) {\n if (this.preloadedImages.size >= DEFAULT_PRELOADED_IMAGES_LIMIT) {\n throw new ɵRuntimeError(2961 /* RuntimeErrorCode.TOO_MANY_PRELOADED_IMAGES */, ngDevMode &&\n `The \\`NgOptimizedImage\\` directive has detected that more than ` +\n `${DEFAULT_PRELOADED_IMAGES_LIMIT} images were marked as priority. ` +\n `This might negatively affect an overall performance of the page. ` +\n `To fix this, remove the \"priority\" attribute from images with less priority.`);\n }\n }\n if (this.preloadedImages.has(src)) {\n return;\n }\n this.preloadedImages.add(src);\n const preload = renderer.createElement('link');\n renderer.setAttribute(preload, 'as', 'image');\n renderer.setAttribute(preload, 'href', src);\n renderer.setAttribute(preload, 'rel', 'preload');\n renderer.setAttribute(preload, 'fetchpriority', 'high');\n if (sizes) {\n renderer.setAttribute(preload, 'imageSizes', sizes);\n }\n if (srcset) {\n renderer.setAttribute(preload, 'imageSrcset', srcset);\n }\n renderer.appendChild(this.document.head, preload);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreloadLinkCreator, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreloadLinkCreator, providedIn: 'root' }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: PreloadLinkCreator, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }] });\n\n/**\n * When a Base64-encoded image is passed as an input to the `NgOptimizedImage` directive,\n * an error is thrown. The image content (as a string) might be very long, thus making\n * it hard to read an error message if the entire string is included. This const defines\n * the number of characters that should be included into the error message. The rest\n * of the content is truncated.\n */\nconst BASE64_IMG_MAX_LENGTH_IN_ERROR = 50;\n/**\n * RegExpr to determine whether a src in a srcset is using width descriptors.\n * Should match something like: \"100w, 200w\".\n */\nconst VALID_WIDTH_DESCRIPTOR_SRCSET = /^((\\s*\\d+w\\s*(,|$)){1,})$/;\n/**\n * RegExpr to determine whether a src in a srcset is using density descriptors.\n * Should match something like: \"1x, 2x, 50x\". Also supports decimals like \"1.5x, 1.50x\".\n */\nconst VALID_DENSITY_DESCRIPTOR_SRCSET = /^((\\s*\\d+(\\.\\d+)?x\\s*(,|$)){1,})$/;\n/**\n * Srcset values with a density descriptor higher than this value will actively\n * throw an error. Such densities are not permitted as they cause image sizes\n * to be unreasonably large and slow down LCP.\n */\nconst ABSOLUTE_SRCSET_DENSITY_CAP = 3;\n/**\n * Used only in error message text to communicate best practices, as we will\n * only throw based on the slightly more conservative ABSOLUTE_SRCSET_DENSITY_CAP.\n */\nconst RECOMMENDED_SRCSET_DENSITY_CAP = 2;\n/**\n * Used in generating automatic density-based srcsets\n */\nconst DENSITY_SRCSET_MULTIPLIERS = [1, 2];\n/**\n * Used to determine which breakpoints to use on full-width images\n */\nconst VIEWPORT_BREAKPOINT_CUTOFF = 640;\n/**\n * Used to determine whether two aspect ratios are similar in value.\n */\nconst ASPECT_RATIO_TOLERANCE = .1;\n/**\n * Used to determine whether the image has been requested at an overly\n * large size compared to the actual rendered image size (after taking\n * into account a typical device pixel ratio). In pixels.\n */\nconst OVERSIZED_IMAGE_TOLERANCE = 1000;\n/**\n * Used to limit automatic srcset generation of very large sources for\n * fixed-size images. In pixels.\n */\nconst FIXED_SRCSET_WIDTH_LIMIT = 1920;\nconst FIXED_SRCSET_HEIGHT_LIMIT = 1080;\n/** Info about built-in loaders we can test for. */\nconst BUILT_IN_LOADERS = [imgixLoaderInfo, imageKitLoaderInfo, cloudinaryLoaderInfo];\n/**\n * Directive that improves image loading performance by enforcing best practices.\n *\n * `NgOptimizedImage` ensures that the loading of the Largest Contentful Paint (LCP) image is\n * prioritized by:\n * - Automatically setting the `fetchpriority` attribute on the `` tag\n * - Lazy loading non-priority images by default\n * - Automatically generating a preconnect link tag in the document head\n *\n * In addition, the directive:\n * - Generates appropriate asset URLs if a corresponding `ImageLoader` function is provided\n * - Automatically generates a srcset\n * - Requires that `width` and `height` are set\n * - Warns if `width` or `height` have been set incorrectly\n * - Warns if the image will be visually distorted when rendered\n *\n * @usageNotes\n * The `NgOptimizedImage` directive is marked as [standalone](guide/standalone-components) and can\n * be imported directly.\n *\n * Follow the steps below to enable and use the directive:\n * 1. Import it into the necessary NgModule or a standalone Component.\n * 2. Optionally provide an `ImageLoader` if you use an image hosting service.\n * 3. Update the necessary `` tags in templates and replace `src` attributes with `ngSrc`.\n * Using a `ngSrc` allows the directive to control when the `src` gets set, which triggers an image\n * download.\n *\n * Step 1: import the `NgOptimizedImage` directive.\n *\n * ```typescript\n * import { NgOptimizedImage } from '@angular/common';\n *\n * // Include it into the necessary NgModule\n * @NgModule({\n * imports: [NgOptimizedImage],\n * })\n * class AppModule {}\n *\n * // ... or a standalone Component\n * @Component({\n * standalone: true\n * imports: [NgOptimizedImage],\n * })\n * class MyStandaloneComponent {}\n * ```\n *\n * Step 2: configure a loader.\n *\n * To use the **default loader**: no additional code changes are necessary. The URL returned by the\n * generic loader will always match the value of \"src\". In other words, this loader applies no\n * transformations to the resource URL and the value of the `ngSrc` attribute will be used as is.\n *\n * To use an existing loader for a **third-party image service**: add the provider factory for your\n * chosen service to the `providers` array. In the example below, the Imgix loader is used:\n *\n * ```typescript\n * import {provideImgixLoader} from '@angular/common';\n *\n * // Call the function and add the result to the `providers` array:\n * providers: [\n * provideImgixLoader(\"https://my.base.url/\"),\n * ],\n * ```\n *\n * The `NgOptimizedImage` directive provides the following functions:\n * - `provideCloudflareLoader`\n * - `provideCloudinaryLoader`\n * - `provideImageKitLoader`\n * - `provideImgixLoader`\n *\n * If you use a different image provider, you can create a custom loader function as described\n * below.\n *\n * To use a **custom loader**: provide your loader function as a value for the `IMAGE_LOADER` DI\n * token.\n *\n * ```typescript\n * import {IMAGE_LOADER, ImageLoaderConfig} from '@angular/common';\n *\n * // Configure the loader using the `IMAGE_LOADER` token.\n * providers: [\n * {\n * provide: IMAGE_LOADER,\n * useValue: (config: ImageLoaderConfig) => {\n * return `https://example.com/${config.src}-${config.width}.jpg}`;\n * }\n * },\n * ],\n * ```\n *\n * Step 3: update `` tags in templates to use `ngSrc` instead of `src`.\n *\n * ```\n * \n * ```\n *\n * @publicApi\n */\nclass NgOptimizedImage {\n constructor() {\n this.imageLoader = inject(IMAGE_LOADER);\n this.config = processConfig(inject(ɵIMAGE_CONFIG));\n this.renderer = inject(Renderer2);\n this.imgElement = inject(ElementRef).nativeElement;\n this.injector = inject(Injector);\n this.isServer = isPlatformServer(inject(PLATFORM_ID));\n this.preloadLinkCreator = inject(PreloadLinkCreator);\n // a LCP image observer - should be injected only in the dev mode\n this.lcpObserver = ngDevMode ? this.injector.get(LCPImageObserver) : null;\n /**\n * Calculate the rewritten `src` once and store it.\n * This is needed to avoid repetitive calculations and make sure the directive cleanup in the\n * `ngOnDestroy` does not rely on the `IMAGE_LOADER` logic (which in turn can rely on some other\n * instance that might be already destroyed).\n */\n this._renderedSrc = null;\n /**\n * Indicates whether this image should have a high priority.\n */\n this.priority = false;\n /**\n * Disables automatic srcset generation for this image.\n */\n this.disableOptimizedSrcset = false;\n /**\n * Sets the image to \"fill mode\", which eliminates the height/width requirement and adds\n * styles such that the image fills its containing element.\n */\n this.fill = false;\n }\n /** @nodoc */\n ngOnInit() {\n ɵperformanceMarkFeature('NgOptimizedImage');\n if (ngDevMode) {\n const ngZone = this.injector.get(NgZone);\n assertNonEmptyInput(this, 'ngSrc', this.ngSrc);\n assertValidNgSrcset(this, this.ngSrcset);\n assertNoConflictingSrc(this);\n if (this.ngSrcset) {\n assertNoConflictingSrcset(this);\n }\n assertNotBase64Image(this);\n assertNotBlobUrl(this);\n if (this.fill) {\n assertEmptyWidthAndHeight(this);\n // This leaves the Angular zone to avoid triggering unnecessary change detection cycles when\n // `load` tasks are invoked on images.\n ngZone.runOutsideAngular(() => assertNonZeroRenderedHeight(this, this.imgElement, this.renderer));\n }\n else {\n assertNonEmptyWidthAndHeight(this);\n if (this.height !== undefined) {\n assertGreaterThanZero(this, this.height, 'height');\n }\n if (this.width !== undefined) {\n assertGreaterThanZero(this, this.width, 'width');\n }\n // Only check for distorted images when not in fill mode, where\n // images may be intentionally stretched, cropped or letterboxed.\n ngZone.runOutsideAngular(() => assertNoImageDistortion(this, this.imgElement, this.renderer));\n }\n assertValidLoadingInput(this);\n if (!this.ngSrcset) {\n assertNoComplexSizes(this);\n }\n assertNotMissingBuiltInLoader(this.ngSrc, this.imageLoader);\n assertNoNgSrcsetWithoutLoader(this, this.imageLoader);\n assertNoLoaderParamsWithoutLoader(this, this.imageLoader);\n if (this.lcpObserver !== null) {\n const ngZone = this.injector.get(NgZone);\n ngZone.runOutsideAngular(() => {\n this.lcpObserver.registerImage(this.getRewrittenSrc(), this.ngSrc, this.priority);\n });\n }\n if (this.priority) {\n const checker = this.injector.get(PreconnectLinkChecker);\n checker.assertPreconnect(this.getRewrittenSrc(), this.ngSrc);\n }\n }\n this.setHostAttributes();\n }\n setHostAttributes() {\n // Must set width/height explicitly in case they are bound (in which case they will\n // only be reflected and not found by the browser)\n if (this.fill) {\n if (!this.sizes) {\n this.sizes = '100vw';\n }\n }\n else {\n this.setHostAttribute('width', this.width.toString());\n this.setHostAttribute('height', this.height.toString());\n }\n this.setHostAttribute('loading', this.getLoadingBehavior());\n this.setHostAttribute('fetchpriority', this.getFetchPriority());\n // The `data-ng-img` attribute flags an image as using the directive, to allow\n // for analysis of the directive's performance.\n this.setHostAttribute('ng-img', 'true');\n // The `src` and `srcset` attributes should be set last since other attributes\n // could affect the image's loading behavior.\n const rewrittenSrcset = this.updateSrcAndSrcset();\n if (this.sizes) {\n this.setHostAttribute('sizes', this.sizes);\n }\n if (this.isServer && this.priority) {\n this.preloadLinkCreator.createPreloadLinkTag(this.renderer, this.getRewrittenSrc(), rewrittenSrcset, this.sizes);\n }\n }\n /** @nodoc */\n ngOnChanges(changes) {\n if (ngDevMode) {\n assertNoPostInitInputChange(this, changes, [\n 'ngSrcset',\n 'width',\n 'height',\n 'priority',\n 'fill',\n 'loading',\n 'sizes',\n 'loaderParams',\n 'disableOptimizedSrcset',\n ]);\n }\n if (changes['ngSrc'] && !changes['ngSrc'].isFirstChange()) {\n const oldSrc = this._renderedSrc;\n this.updateSrcAndSrcset(true);\n const newSrc = this._renderedSrc;\n if (this.lcpObserver !== null && oldSrc && newSrc && oldSrc !== newSrc) {\n const ngZone = this.injector.get(NgZone);\n ngZone.runOutsideAngular(() => {\n this.lcpObserver?.updateImage(oldSrc, newSrc);\n });\n }\n }\n }\n callImageLoader(configWithoutCustomParams) {\n let augmentedConfig = configWithoutCustomParams;\n if (this.loaderParams) {\n augmentedConfig.loaderParams = this.loaderParams;\n }\n return this.imageLoader(augmentedConfig);\n }\n getLoadingBehavior() {\n if (!this.priority && this.loading !== undefined) {\n return this.loading;\n }\n return this.priority ? 'eager' : 'lazy';\n }\n getFetchPriority() {\n return this.priority ? 'high' : 'auto';\n }\n getRewrittenSrc() {\n // ImageLoaderConfig supports setting a width property. However, we're not setting width here\n // because if the developer uses rendered width instead of intrinsic width in the HTML width\n // attribute, the image requested may be too small for 2x+ screens.\n if (!this._renderedSrc) {\n const imgConfig = { src: this.ngSrc };\n // Cache calculated image src to reuse it later in the code.\n this._renderedSrc = this.callImageLoader(imgConfig);\n }\n return this._renderedSrc;\n }\n getRewrittenSrcset() {\n const widthSrcSet = VALID_WIDTH_DESCRIPTOR_SRCSET.test(this.ngSrcset);\n const finalSrcs = this.ngSrcset.split(',').filter(src => src !== '').map(srcStr => {\n srcStr = srcStr.trim();\n const width = widthSrcSet ? parseFloat(srcStr) : parseFloat(srcStr) * this.width;\n return `${this.callImageLoader({ src: this.ngSrc, width })} ${srcStr}`;\n });\n return finalSrcs.join(', ');\n }\n getAutomaticSrcset() {\n if (this.sizes) {\n return this.getResponsiveSrcset();\n }\n else {\n return this.getFixedSrcset();\n }\n }\n getResponsiveSrcset() {\n const { breakpoints } = this.config;\n let filteredBreakpoints = breakpoints;\n if (this.sizes?.trim() === '100vw') {\n // Since this is a full-screen-width image, our srcset only needs to include\n // breakpoints with full viewport widths.\n filteredBreakpoints = breakpoints.filter(bp => bp >= VIEWPORT_BREAKPOINT_CUTOFF);\n }\n const finalSrcs = filteredBreakpoints.map(bp => `${this.callImageLoader({ src: this.ngSrc, width: bp })} ${bp}w`);\n return finalSrcs.join(', ');\n }\n updateSrcAndSrcset(forceSrcRecalc = false) {\n if (forceSrcRecalc) {\n // Reset cached value, so that the followup `getRewrittenSrc()` call\n // will recalculate it and update the cache.\n this._renderedSrc = null;\n }\n const rewrittenSrc = this.getRewrittenSrc();\n this.setHostAttribute('src', rewrittenSrc);\n let rewrittenSrcset = undefined;\n if (this.ngSrcset) {\n rewrittenSrcset = this.getRewrittenSrcset();\n }\n else if (this.shouldGenerateAutomaticSrcset()) {\n rewrittenSrcset = this.getAutomaticSrcset();\n }\n if (rewrittenSrcset) {\n this.setHostAttribute('srcset', rewrittenSrcset);\n }\n return rewrittenSrcset;\n }\n getFixedSrcset() {\n const finalSrcs = DENSITY_SRCSET_MULTIPLIERS.map(multiplier => `${this.callImageLoader({\n src: this.ngSrc,\n width: this.width * multiplier\n })} ${multiplier}x`);\n return finalSrcs.join(', ');\n }\n shouldGenerateAutomaticSrcset() {\n let oversizedImage = false;\n if (!this.sizes) {\n oversizedImage =\n this.width > FIXED_SRCSET_WIDTH_LIMIT || this.height > FIXED_SRCSET_HEIGHT_LIMIT;\n }\n return !this.disableOptimizedSrcset && !this.srcset && this.imageLoader !== noopImageLoader &&\n !oversizedImage;\n }\n /** @nodoc */\n ngOnDestroy() {\n if (ngDevMode) {\n if (!this.priority && this._renderedSrc !== null && this.lcpObserver !== null) {\n this.lcpObserver.unregisterImage(this._renderedSrc);\n }\n }\n }\n setHostAttribute(name, value) {\n this.renderer.setAttribute(this.imgElement, name, value);\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgOptimizedImage, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }\n static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"16.1.0\", version: \"17.1.0\", type: NgOptimizedImage, isStandalone: true, selector: \"img[ngSrc]\", inputs: { ngSrc: [\"ngSrc\", \"ngSrc\", unwrapSafeUrl], ngSrcset: \"ngSrcset\", sizes: \"sizes\", width: [\"width\", \"width\", numberAttribute], height: [\"height\", \"height\", numberAttribute], loading: \"loading\", priority: [\"priority\", \"priority\", booleanAttribute], loaderParams: \"loaderParams\", disableOptimizedSrcset: [\"disableOptimizedSrcset\", \"disableOptimizedSrcset\", booleanAttribute], fill: [\"fill\", \"fill\", booleanAttribute], src: \"src\", srcset: \"srcset\" }, host: { properties: { \"style.position\": \"fill ? \\\"absolute\\\" : null\", \"style.width\": \"fill ? \\\"100%\\\" : null\", \"style.height\": \"fill ? \\\"100%\\\" : null\", \"style.inset\": \"fill ? \\\"0px\\\" : null\" } }, usesOnChanges: true, ngImport: i0 }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: NgOptimizedImage, decorators: [{\n type: Directive,\n args: [{\n standalone: true,\n selector: 'img[ngSrc]',\n host: {\n '[style.position]': 'fill ? \"absolute\" : null',\n '[style.width]': 'fill ? \"100%\" : null',\n '[style.height]': 'fill ? \"100%\" : null',\n '[style.inset]': 'fill ? \"0px\" : null'\n }\n }]\n }], propDecorators: { ngSrc: [{\n type: Input,\n args: [{ required: true, transform: unwrapSafeUrl }]\n }], ngSrcset: [{\n type: Input\n }], sizes: [{\n type: Input\n }], width: [{\n type: Input,\n args: [{ transform: numberAttribute }]\n }], height: [{\n type: Input,\n args: [{ transform: numberAttribute }]\n }], loading: [{\n type: Input\n }], priority: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }], loaderParams: [{\n type: Input\n }], disableOptimizedSrcset: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }], fill: [{\n type: Input,\n args: [{ transform: booleanAttribute }]\n }], src: [{\n type: Input\n }], srcset: [{\n type: Input\n }] } });\n/***** Helpers *****/\n/**\n * Sorts provided config breakpoints and uses defaults.\n */\nfunction processConfig(config) {\n let sortedBreakpoints = {};\n if (config.breakpoints) {\n sortedBreakpoints.breakpoints = config.breakpoints.sort((a, b) => a - b);\n }\n return Object.assign({}, ɵIMAGE_CONFIG_DEFAULTS, config, sortedBreakpoints);\n}\n/***** Assert functions *****/\n/**\n * Verifies that there is no `src` set on a host element.\n */\nfunction assertNoConflictingSrc(dir) {\n if (dir.src) {\n throw new ɵRuntimeError(2950 /* RuntimeErrorCode.UNEXPECTED_SRC_ATTR */, `${imgDirectiveDetails(dir.ngSrc)} both \\`src\\` and \\`ngSrc\\` have been set. ` +\n `Supplying both of these attributes breaks lazy loading. ` +\n `The NgOptimizedImage directive sets \\`src\\` itself based on the value of \\`ngSrc\\`. ` +\n `To fix this, please remove the \\`src\\` attribute.`);\n }\n}\n/**\n * Verifies that there is no `srcset` set on a host element.\n */\nfunction assertNoConflictingSrcset(dir) {\n if (dir.srcset) {\n throw new ɵRuntimeError(2951 /* RuntimeErrorCode.UNEXPECTED_SRCSET_ATTR */, `${imgDirectiveDetails(dir.ngSrc)} both \\`srcset\\` and \\`ngSrcset\\` have been set. ` +\n `Supplying both of these attributes breaks lazy loading. ` +\n `The NgOptimizedImage directive sets \\`srcset\\` itself based on the value of ` +\n `\\`ngSrcset\\`. To fix this, please remove the \\`srcset\\` attribute.`);\n }\n}\n/**\n * Verifies that the `ngSrc` is not a Base64-encoded image.\n */\nfunction assertNotBase64Image(dir) {\n let ngSrc = dir.ngSrc.trim();\n if (ngSrc.startsWith('data:')) {\n if (ngSrc.length > BASE64_IMG_MAX_LENGTH_IN_ERROR) {\n ngSrc = ngSrc.substring(0, BASE64_IMG_MAX_LENGTH_IN_ERROR) + '...';\n }\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc, false)} \\`ngSrc\\` is a Base64-encoded string ` +\n `(${ngSrc}). NgOptimizedImage does not support Base64-encoded strings. ` +\n `To fix this, disable the NgOptimizedImage directive for this element ` +\n `by removing \\`ngSrc\\` and using a standard \\`src\\` attribute instead.`);\n }\n}\n/**\n * Verifies that the 'sizes' only includes responsive values.\n */\nfunction assertNoComplexSizes(dir) {\n let sizes = dir.sizes;\n if (sizes?.match(/((\\)|,)\\s|^)\\d+px/)) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc, false)} \\`sizes\\` was set to a string including ` +\n `pixel values. For automatic \\`srcset\\` generation, \\`sizes\\` must only include responsive ` +\n `values, such as \\`sizes=\"50vw\"\\` or \\`sizes=\"(min-width: 768px) 50vw, 100vw\"\\`. ` +\n `To fix this, modify the \\`sizes\\` attribute, or provide your own \\`ngSrcset\\` value directly.`);\n }\n}\n/**\n * Verifies that the `ngSrc` is not a Blob URL.\n */\nfunction assertNotBlobUrl(dir) {\n const ngSrc = dir.ngSrc.trim();\n if (ngSrc.startsWith('blob:')) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`ngSrc\\` was set to a blob URL (${ngSrc}). ` +\n `Blob URLs are not supported by the NgOptimizedImage directive. ` +\n `To fix this, disable the NgOptimizedImage directive for this element ` +\n `by removing \\`ngSrc\\` and using a regular \\`src\\` attribute instead.`);\n }\n}\n/**\n * Verifies that the input is set to a non-empty string.\n */\nfunction assertNonEmptyInput(dir, name, value) {\n const isString = typeof value === 'string';\n const isEmptyString = isString && value.trim() === '';\n if (!isString || isEmptyString) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`${name}\\` has an invalid value ` +\n `(\\`${value}\\`). To fix this, change the value to a non-empty string.`);\n }\n}\n/**\n * Verifies that the `ngSrcset` is in a valid format, e.g. \"100w, 200w\" or \"1x, 2x\".\n */\nfunction assertValidNgSrcset(dir, value) {\n if (value == null)\n return;\n assertNonEmptyInput(dir, 'ngSrcset', value);\n const stringVal = value;\n const isValidWidthDescriptor = VALID_WIDTH_DESCRIPTOR_SRCSET.test(stringVal);\n const isValidDensityDescriptor = VALID_DENSITY_DESCRIPTOR_SRCSET.test(stringVal);\n if (isValidDensityDescriptor) {\n assertUnderDensityCap(dir, stringVal);\n }\n const isValidSrcset = isValidWidthDescriptor || isValidDensityDescriptor;\n if (!isValidSrcset) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`ngSrcset\\` has an invalid value (\\`${value}\\`). ` +\n `To fix this, supply \\`ngSrcset\\` using a comma-separated list of one or more width ` +\n `descriptors (e.g. \"100w, 200w\") or density descriptors (e.g. \"1x, 2x\").`);\n }\n}\nfunction assertUnderDensityCap(dir, value) {\n const underDensityCap = value.split(',').every(num => num === '' || parseFloat(num) <= ABSOLUTE_SRCSET_DENSITY_CAP);\n if (!underDensityCap) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`ngSrcset\\` contains an unsupported image density:` +\n `\\`${value}\\`. NgOptimizedImage generally recommends a max image density of ` +\n `${RECOMMENDED_SRCSET_DENSITY_CAP}x but supports image densities up to ` +\n `${ABSOLUTE_SRCSET_DENSITY_CAP}x. The human eye cannot distinguish between image densities ` +\n `greater than ${RECOMMENDED_SRCSET_DENSITY_CAP}x - which makes them unnecessary for ` +\n `most use cases. Images that will be pinch-zoomed are typically the primary use case for ` +\n `${ABSOLUTE_SRCSET_DENSITY_CAP}x images. Please remove the high density descriptor and try again.`);\n }\n}\n/**\n * Creates a `RuntimeError` instance to represent a situation when an input is set after\n * the directive has initialized.\n */\nfunction postInitInputChangeError(dir, inputName) {\n let reason;\n if (inputName === 'width' || inputName === 'height') {\n reason = `Changing \\`${inputName}\\` may result in different attribute value ` +\n `applied to the underlying image element and cause layout shifts on a page.`;\n }\n else {\n reason = `Changing the \\`${inputName}\\` would have no effect on the underlying ` +\n `image element, because the resource loading has already occurred.`;\n }\n return new ɵRuntimeError(2953 /* RuntimeErrorCode.UNEXPECTED_INPUT_CHANGE */, `${imgDirectiveDetails(dir.ngSrc)} \\`${inputName}\\` was updated after initialization. ` +\n `The NgOptimizedImage directive will not react to this input change. ${reason} ` +\n `To fix this, either switch \\`${inputName}\\` to a static value ` +\n `or wrap the image element in an *ngIf that is gated on the necessary value.`);\n}\n/**\n * Verify that none of the listed inputs has changed.\n */\nfunction assertNoPostInitInputChange(dir, changes, inputs) {\n inputs.forEach(input => {\n const isUpdated = changes.hasOwnProperty(input);\n if (isUpdated && !changes[input].isFirstChange()) {\n if (input === 'ngSrc') {\n // When the `ngSrc` input changes, we detect that only in the\n // `ngOnChanges` hook, thus the `ngSrc` is already set. We use\n // `ngSrc` in the error message, so we use a previous value, but\n // not the updated one in it.\n dir = { ngSrc: changes[input].previousValue };\n }\n throw postInitInputChangeError(dir, input);\n }\n });\n}\n/**\n * Verifies that a specified input is a number greater than 0.\n */\nfunction assertGreaterThanZero(dir, inputValue, inputName) {\n const validNumber = typeof inputValue === 'number' && inputValue > 0;\n const validString = typeof inputValue === 'string' && /^\\d+$/.test(inputValue.trim()) && parseInt(inputValue) > 0;\n if (!validNumber && !validString) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`${inputName}\\` has an invalid value. ` +\n `To fix this, provide \\`${inputName}\\` as a number greater than 0.`);\n }\n}\n/**\n * Verifies that the rendered image is not visually distorted. Effectively this is checking:\n * - Whether the \"width\" and \"height\" attributes reflect the actual dimensions of the image.\n * - Whether image styling is \"correct\" (see below for a longer explanation).\n */\nfunction assertNoImageDistortion(dir, img, renderer) {\n const removeLoadListenerFn = renderer.listen(img, 'load', () => {\n removeLoadListenerFn();\n removeErrorListenerFn();\n const computedStyle = window.getComputedStyle(img);\n let renderedWidth = parseFloat(computedStyle.getPropertyValue('width'));\n let renderedHeight = parseFloat(computedStyle.getPropertyValue('height'));\n const boxSizing = computedStyle.getPropertyValue('box-sizing');\n if (boxSizing === 'border-box') {\n const paddingTop = computedStyle.getPropertyValue('padding-top');\n const paddingRight = computedStyle.getPropertyValue('padding-right');\n const paddingBottom = computedStyle.getPropertyValue('padding-bottom');\n const paddingLeft = computedStyle.getPropertyValue('padding-left');\n renderedWidth -= parseFloat(paddingRight) + parseFloat(paddingLeft);\n renderedHeight -= parseFloat(paddingTop) + parseFloat(paddingBottom);\n }\n const renderedAspectRatio = renderedWidth / renderedHeight;\n const nonZeroRenderedDimensions = renderedWidth !== 0 && renderedHeight !== 0;\n const intrinsicWidth = img.naturalWidth;\n const intrinsicHeight = img.naturalHeight;\n const intrinsicAspectRatio = intrinsicWidth / intrinsicHeight;\n const suppliedWidth = dir.width;\n const suppliedHeight = dir.height;\n const suppliedAspectRatio = suppliedWidth / suppliedHeight;\n // Tolerance is used to account for the impact of subpixel rendering.\n // Due to subpixel rendering, the rendered, intrinsic, and supplied\n // aspect ratios of a correctly configured image may not exactly match.\n // For example, a `width=4030 height=3020` image might have a rendered\n // size of \"1062w, 796.48h\". (An aspect ratio of 1.334... vs. 1.333...)\n const inaccurateDimensions = Math.abs(suppliedAspectRatio - intrinsicAspectRatio) > ASPECT_RATIO_TOLERANCE;\n const stylingDistortion = nonZeroRenderedDimensions &&\n Math.abs(intrinsicAspectRatio - renderedAspectRatio) > ASPECT_RATIO_TOLERANCE;\n if (inaccurateDimensions) {\n console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the aspect ratio of the image does not match ` +\n `the aspect ratio indicated by the width and height attributes. ` +\n `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h ` +\n `(aspect-ratio: ${round(intrinsicAspectRatio)}). \\nSupplied width and height attributes: ` +\n `${suppliedWidth}w x ${suppliedHeight}h (aspect-ratio: ${round(suppliedAspectRatio)}). ` +\n `\\nTo fix this, update the width and height attributes.`));\n }\n else if (stylingDistortion) {\n console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the aspect ratio of the rendered image ` +\n `does not match the image's intrinsic aspect ratio. ` +\n `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h ` +\n `(aspect-ratio: ${round(intrinsicAspectRatio)}). \\nRendered image size: ` +\n `${renderedWidth}w x ${renderedHeight}h (aspect-ratio: ` +\n `${round(renderedAspectRatio)}). \\nThis issue can occur if \"width\" and \"height\" ` +\n `attributes are added to an image without updating the corresponding ` +\n `image styling. To fix this, adjust image styling. In most cases, ` +\n `adding \"height: auto\" or \"width: auto\" to the image styling will fix ` +\n `this issue.`));\n }\n else if (!dir.ngSrcset && nonZeroRenderedDimensions) {\n // If `ngSrcset` hasn't been set, sanity check the intrinsic size.\n const recommendedWidth = RECOMMENDED_SRCSET_DENSITY_CAP * renderedWidth;\n const recommendedHeight = RECOMMENDED_SRCSET_DENSITY_CAP * renderedHeight;\n const oversizedWidth = (intrinsicWidth - recommendedWidth) >= OVERSIZED_IMAGE_TOLERANCE;\n const oversizedHeight = (intrinsicHeight - recommendedHeight) >= OVERSIZED_IMAGE_TOLERANCE;\n if (oversizedWidth || oversizedHeight) {\n console.warn(ɵformatRuntimeError(2960 /* RuntimeErrorCode.OVERSIZED_IMAGE */, `${imgDirectiveDetails(dir.ngSrc)} the intrinsic image is significantly ` +\n `larger than necessary. ` +\n `\\nRendered image size: ${renderedWidth}w x ${renderedHeight}h. ` +\n `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h. ` +\n `\\nRecommended intrinsic image size: ${recommendedWidth}w x ${recommendedHeight}h. ` +\n `\\nNote: Recommended intrinsic image size is calculated assuming a maximum DPR of ` +\n `${RECOMMENDED_SRCSET_DENSITY_CAP}. To improve loading time, resize the image ` +\n `or consider using the \"ngSrcset\" and \"sizes\" attributes.`));\n }\n }\n });\n // We only listen to the `error` event to remove the `load` event listener because it will not be\n // fired if the image fails to load. This is done to prevent memory leaks in development mode\n // because image elements aren't garbage-collected properly. It happens because zone.js stores the\n // event listener directly on the element and closures capture `dir`.\n const removeErrorListenerFn = renderer.listen(img, 'error', () => {\n removeLoadListenerFn();\n removeErrorListenerFn();\n });\n}\n/**\n * Verifies that a specified input is set.\n */\nfunction assertNonEmptyWidthAndHeight(dir) {\n let missingAttributes = [];\n if (dir.width === undefined)\n missingAttributes.push('width');\n if (dir.height === undefined)\n missingAttributes.push('height');\n if (missingAttributes.length > 0) {\n throw new ɵRuntimeError(2954 /* RuntimeErrorCode.REQUIRED_INPUT_MISSING */, `${imgDirectiveDetails(dir.ngSrc)} these required attributes ` +\n `are missing: ${missingAttributes.map(attr => `\"${attr}\"`).join(', ')}. ` +\n `Including \"width\" and \"height\" attributes will prevent image-related layout shifts. ` +\n `To fix this, include \"width\" and \"height\" attributes on the image tag or turn on ` +\n `\"fill\" mode with the \\`fill\\` attribute.`);\n }\n}\n/**\n * Verifies that width and height are not set. Used in fill mode, where those attributes don't make\n * sense.\n */\nfunction assertEmptyWidthAndHeight(dir) {\n if (dir.width || dir.height) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the attributes \\`height\\` and/or \\`width\\` are present ` +\n `along with the \\`fill\\` attribute. Because \\`fill\\` mode causes an image to fill its containing ` +\n `element, the size attributes have no effect and should be removed.`);\n }\n}\n/**\n * Verifies that the rendered image has a nonzero height. If the image is in fill mode, provides\n * guidance that this can be caused by the containing element's CSS position property.\n */\nfunction assertNonZeroRenderedHeight(dir, img, renderer) {\n const removeLoadListenerFn = renderer.listen(img, 'load', () => {\n removeLoadListenerFn();\n removeErrorListenerFn();\n const renderedHeight = img.clientHeight;\n if (dir.fill && renderedHeight === 0) {\n console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the height of the fill-mode image is zero. ` +\n `This is likely because the containing element does not have the CSS 'position' ` +\n `property set to one of the following: \"relative\", \"fixed\", or \"absolute\". ` +\n `To fix this problem, make sure the container element has the CSS 'position' ` +\n `property defined and the height of the element is not zero.`));\n }\n });\n // See comments in the `assertNoImageDistortion`.\n const removeErrorListenerFn = renderer.listen(img, 'error', () => {\n removeLoadListenerFn();\n removeErrorListenerFn();\n });\n}\n/**\n * Verifies that the `loading` attribute is set to a valid input &\n * is not used on priority images.\n */\nfunction assertValidLoadingInput(dir) {\n if (dir.loading && dir.priority) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loading\\` attribute ` +\n `was used on an image that was marked \"priority\". ` +\n `Setting \\`loading\\` on priority images is not allowed ` +\n `because these images will always be eagerly loaded. ` +\n `To fix this, remove the “loading” attribute from the priority image.`);\n }\n const validInputs = ['auto', 'eager', 'lazy'];\n if (typeof dir.loading === 'string' && !validInputs.includes(dir.loading)) {\n throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loading\\` attribute ` +\n `has an invalid value (\\`${dir.loading}\\`). ` +\n `To fix this, provide a valid value (\"lazy\", \"eager\", or \"auto\").`);\n }\n}\n/**\n * Warns if NOT using a loader (falling back to the generic loader) and\n * the image appears to be hosted on one of the image CDNs for which\n * we do have a built-in image loader. Suggests switching to the\n * built-in loader.\n *\n * @param ngSrc Value of the ngSrc attribute\n * @param imageLoader ImageLoader provided\n */\nfunction assertNotMissingBuiltInLoader(ngSrc, imageLoader) {\n if (imageLoader === noopImageLoader) {\n let builtInLoaderName = '';\n for (const loader of BUILT_IN_LOADERS) {\n if (loader.testUrl(ngSrc)) {\n builtInLoaderName = loader.name;\n break;\n }\n }\n if (builtInLoaderName) {\n console.warn(ɵformatRuntimeError(2962 /* RuntimeErrorCode.MISSING_BUILTIN_LOADER */, `NgOptimizedImage: It looks like your images may be hosted on the ` +\n `${builtInLoaderName} CDN, but your app is not using Angular's ` +\n `built-in loader for that CDN. We recommend switching to use ` +\n `the built-in by calling \\`provide${builtInLoaderName}Loader()\\` ` +\n `in your \\`providers\\` and passing it your instance's base URL. ` +\n `If you don't want to use the built-in loader, define a custom ` +\n `loader function using IMAGE_LOADER to silence this warning.`));\n }\n }\n}\n/**\n * Warns if ngSrcset is present and no loader is configured (i.e. the default one is being used).\n */\nfunction assertNoNgSrcsetWithoutLoader(dir, imageLoader) {\n if (dir.ngSrcset && imageLoader === noopImageLoader) {\n console.warn(ɵformatRuntimeError(2963 /* RuntimeErrorCode.MISSING_NECESSARY_LOADER */, `${imgDirectiveDetails(dir.ngSrc)} the \\`ngSrcset\\` attribute is present but ` +\n `no image loader is configured (i.e. the default one is being used), ` +\n `which would result in the same image being used for all configured sizes. ` +\n `To fix this, provide a loader or remove the \\`ngSrcset\\` attribute from the image.`));\n }\n}\n/**\n * Warns if loaderParams is present and no loader is configured (i.e. the default one is being\n * used).\n */\nfunction assertNoLoaderParamsWithoutLoader(dir, imageLoader) {\n if (dir.loaderParams && imageLoader === noopImageLoader) {\n console.warn(ɵformatRuntimeError(2963 /* RuntimeErrorCode.MISSING_NECESSARY_LOADER */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loaderParams\\` attribute is present but ` +\n `no image loader is configured (i.e. the default one is being used), ` +\n `which means that the loaderParams data will not be consumed and will not affect the URL. ` +\n `To fix this, provide a custom loader or remove the \\`loaderParams\\` attribute from the image.`));\n }\n}\nfunction round(input) {\n return Number.isInteger(input) ? input : input.toFixed(2);\n}\n// Transform function to handle SafeValue input for ngSrc. This doesn't do any sanitization,\n// as that is not needed for img.src and img.srcset. This transform is purely for compatibility.\nfunction unwrapSafeUrl(value) {\n if (typeof value === 'string') {\n return value;\n }\n return ɵunwrapSafeValue(value);\n}\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the common package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { APP_BASE_HREF, AsyncPipe, BrowserPlatformLocation, CommonModule, CurrencyPipe, DATE_PIPE_DEFAULT_OPTIONS, DATE_PIPE_DEFAULT_TIMEZONE, DOCUMENT, DatePipe, DecimalPipe, FormStyle, FormatWidth, HashLocationStrategy, I18nPluralPipe, I18nSelectPipe, IMAGE_LOADER, JsonPipe, KeyValuePipe, LOCATION_INITIALIZED, Location, LocationStrategy, LowerCasePipe, NgClass, NgComponentOutlet, NgForOf as NgFor, NgForOf, NgForOfContext, NgIf, NgIfContext, NgLocaleLocalization, NgLocalization, NgOptimizedImage, NgPlural, NgPluralCase, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgTemplateOutlet, NumberFormatStyle, NumberSymbol, PRECONNECT_CHECK_BLOCKLIST, PathLocationStrategy, PercentPipe, PlatformLocation, Plural, SlicePipe, TitleCasePipe, TranslationWidth, UpperCasePipe, VERSION, ViewportScroller, WeekDay, XhrFactory, formatCurrency, formatDate, formatNumber, formatPercent, getCurrencySymbol, getLocaleCurrencyCode, getLocaleCurrencyName, getLocaleCurrencySymbol, getLocaleDateFormat, getLocaleDateTimeFormat, getLocaleDayNames, getLocaleDayPeriods, getLocaleDirection, getLocaleEraNames, getLocaleExtraDayPeriodRules, getLocaleExtraDayPeriods, getLocaleFirstDayOfWeek, getLocaleId, getLocaleMonthNames, getLocaleNumberFormat, getLocaleNumberSymbol, getLocalePluralCase, getLocaleTimeFormat, getLocaleWeekEndRange, getNumberOfCurrencyDigits, isPlatformBrowser, isPlatformServer, isPlatformWorkerApp, isPlatformWorkerUi, provideCloudflareLoader, provideCloudinaryLoader, provideImageKitLoader, provideImgixLoader, registerLocaleData, DomAdapter as ɵDomAdapter, NullViewportScroller as ɵNullViewportScroller, PLATFORM_BROWSER_ID as ɵPLATFORM_BROWSER_ID, PLATFORM_SERVER_ID as ɵPLATFORM_SERVER_ID, PLATFORM_WORKER_APP_ID as ɵPLATFORM_WORKER_APP_ID, PLATFORM_WORKER_UI_ID as ɵPLATFORM_WORKER_UI_ID, getDOM as ɵgetDOM, normalizeQueryParams as ɵnormalizeQueryParams, parseCookieValue as ɵparseCookieValue, setRootDomAdapter as ɵsetRootDomAdapter };\n","/**\n * @license Angular v17.1.0\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { Injectable, inject, NgZone, runInInjectionContext, InjectionToken, ɵPendingTasks, PLATFORM_ID, ɵConsole, ɵformatRuntimeError, Inject, ɵRuntimeError, makeEnvironmentProviders, NgModule, TransferState, makeStateKey, ɵperformanceMarkFeature, APP_BOOTSTRAP_LISTENER, ApplicationRef, ɵwhenStable, ɵtruncateMiddle } from '@angular/core';\nimport { of, Observable, from } from 'rxjs';\nimport { concatMap, filter, map, finalize, switchMap, tap } from 'rxjs/operators';\nimport * as i1 from '@angular/common';\nimport { isPlatformServer, DOCUMENT, ɵparseCookieValue } from '@angular/common';\n\n/**\n * Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a\n * `HttpResponse`.\n *\n * `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the\n * first interceptor in the chain, which dispatches to the second, etc, eventually reaching the\n * `HttpBackend`.\n *\n * In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.\n *\n * @publicApi\n */\nclass HttpHandler {\n}\n/**\n * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.\n *\n * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.\n *\n * When injected, `HttpBackend` dispatches requests directly to the backend, without going\n * through the interceptor chain.\n *\n * @publicApi\n */\nclass HttpBackend {\n}\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @publicApi\n */\nclass HttpHeaders {\n /** Constructs a new HTTP header object with the given values.*/\n constructor(headers) {\n /**\n * Internal map of lowercased header names to the normalized\n * form of the name (the form seen first).\n */\n this.normalizedNames = new Map();\n /**\n * Queued updates to be materialized the next initialization.\n */\n this.lazyUpdate = null;\n if (!headers) {\n this.headers = new Map();\n }\n else if (typeof headers === 'string') {\n this.lazyInit = () => {\n this.headers = new Map();\n headers.split('\\n').forEach(line => {\n const index = line.indexOf(':');\n if (index > 0) {\n const name = line.slice(0, index);\n const key = name.toLowerCase();\n const value = line.slice(index + 1).trim();\n this.maybeSetNormalizedName(name, key);\n if (this.headers.has(key)) {\n this.headers.get(key).push(value);\n }\n else {\n this.headers.set(key, [value]);\n }\n }\n });\n };\n }\n else if (typeof Headers !== 'undefined' && headers instanceof Headers) {\n this.headers = new Map();\n headers.forEach((values, name) => {\n this.setHeaderEntries(name, values);\n });\n }\n else {\n this.lazyInit = () => {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n assertValidHeaders(headers);\n }\n this.headers = new Map();\n Object.entries(headers).forEach(([name, values]) => {\n this.setHeaderEntries(name, values);\n });\n };\n }\n }\n /**\n * Checks for existence of a given header.\n *\n * @param name The header name to check for existence.\n *\n * @returns True if the header exists, false otherwise.\n */\n has(name) {\n this.init();\n return this.headers.has(name.toLowerCase());\n }\n /**\n * Retrieves the first value of a given header.\n *\n * @param name The header name.\n *\n * @returns The value string if the header exists, null otherwise\n */\n get(name) {\n this.init();\n const values = this.headers.get(name.toLowerCase());\n return values && values.length > 0 ? values[0] : null;\n }\n /**\n * Retrieves the names of the headers.\n *\n * @returns A list of header names.\n */\n keys() {\n this.init();\n return Array.from(this.normalizedNames.values());\n }\n /**\n * Retrieves a list of values for a given header.\n *\n * @param name The header name from which to retrieve values.\n *\n * @returns A string of values if the header exists, null otherwise.\n */\n getAll(name) {\n this.init();\n return this.headers.get(name.toLowerCase()) || null;\n }\n /**\n * Appends a new value to the existing set of values for a header\n * and returns them in a clone of the original instance.\n *\n * @param name The header name for which to append the values.\n * @param value The value to append.\n *\n * @returns A clone of the HTTP headers object with the value appended to the given header.\n */\n append(name, value) {\n return this.clone({ name, value, op: 'a' });\n }\n /**\n * Sets or modifies a value for a given header in a clone of the original instance.\n * If the header already exists, its value is replaced with the given value\n * in the returned object.\n *\n * @param name The header name.\n * @param value The value or values to set or override for the given header.\n *\n * @returns A clone of the HTTP headers object with the newly set header value.\n */\n set(name, value) {\n return this.clone({ name, value, op: 's' });\n }\n /**\n * Deletes values for a given header in a clone of the original instance.\n *\n * @param name The header name.\n * @param value The value or values to delete for the given header.\n *\n * @returns A clone of the HTTP headers object with the given value deleted.\n */\n delete(name, value) {\n return this.clone({ name, value, op: 'd' });\n }\n maybeSetNormalizedName(name, lcName) {\n if (!this.normalizedNames.has(lcName)) {\n this.normalizedNames.set(lcName, name);\n }\n }\n init() {\n if (!!this.lazyInit) {\n if (this.lazyInit instanceof HttpHeaders) {\n this.copyFrom(this.lazyInit);\n }\n else {\n this.lazyInit();\n }\n this.lazyInit = null;\n if (!!this.lazyUpdate) {\n this.lazyUpdate.forEach(update => this.applyUpdate(update));\n this.lazyUpdate = null;\n }\n }\n }\n copyFrom(other) {\n other.init();\n Array.from(other.headers.keys()).forEach(key => {\n this.headers.set(key, other.headers.get(key));\n this.normalizedNames.set(key, other.normalizedNames.get(key));\n });\n }\n clone(update) {\n const clone = new HttpHeaders();\n clone.lazyInit =\n (!!this.lazyInit && this.lazyInit instanceof HttpHeaders) ? this.lazyInit : this;\n clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);\n return clone;\n }\n applyUpdate(update) {\n const key = update.name.toLowerCase();\n switch (update.op) {\n case 'a':\n case 's':\n let value = update.value;\n if (typeof value === 'string') {\n value = [value];\n }\n if (value.length === 0) {\n return;\n }\n this.maybeSetNormalizedName(update.name, key);\n const base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];\n base.push(...value);\n this.headers.set(key, base);\n break;\n case 'd':\n const toDelete = update.value;\n if (!toDelete) {\n this.headers.delete(key);\n this.normalizedNames.delete(key);\n }\n else {\n let existing = this.headers.get(key);\n if (!existing) {\n return;\n }\n existing = existing.filter(value => toDelete.indexOf(value) === -1);\n if (existing.length === 0) {\n this.headers.delete(key);\n this.normalizedNames.delete(key);\n }\n else {\n this.headers.set(key, existing);\n }\n }\n break;\n }\n }\n setHeaderEntries(name, values) {\n const headerValues = (Array.isArray(values) ? values : [values]).map((value) => value.toString());\n const key = name.toLowerCase();\n this.headers.set(key, headerValues);\n this.maybeSetNormalizedName(name, key);\n }\n /**\n * @internal\n */\n forEach(fn) {\n this.init();\n Array.from(this.normalizedNames.keys())\n .forEach(key => fn(this.normalizedNames.get(key), this.headers.get(key)));\n }\n}\n/**\n * Verifies that the headers object has the right shape: the values\n * must be either strings, numbers or arrays. Throws an error if an invalid\n * header value is present.\n */\nfunction assertValidHeaders(headers) {\n for (const [key, value] of Object.entries(headers)) {\n if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {\n throw new Error(`Unexpected value of the \\`${key}\\` header provided. ` +\n `Expecting either a string, a number or an array, but got: \\`${value}\\`.`);\n }\n }\n}\n\n/**\n * Provides encoding and decoding of URL parameter and query-string values.\n *\n * Serializes and parses URL parameter keys and values to encode and decode them.\n * If you pass URL query parameters without encoding,\n * the query parameters can be misinterpreted at the receiving end.\n *\n *\n * @publicApi\n */\nclass HttpUrlEncodingCodec {\n /**\n * Encodes a key name for a URL parameter or query-string.\n * @param key The key name.\n * @returns The encoded key name.\n */\n encodeKey(key) {\n return standardEncoding(key);\n }\n /**\n * Encodes the value of a URL parameter or query-string.\n * @param value The value.\n * @returns The encoded value.\n */\n encodeValue(value) {\n return standardEncoding(value);\n }\n /**\n * Decodes an encoded URL parameter or query-string key.\n * @param key The encoded key name.\n * @returns The decoded key name.\n */\n decodeKey(key) {\n return decodeURIComponent(key);\n }\n /**\n * Decodes an encoded URL parameter or query-string value.\n * @param value The encoded value.\n * @returns The decoded value.\n */\n decodeValue(value) {\n return decodeURIComponent(value);\n }\n}\nfunction paramParser(rawParams, codec) {\n const map = new Map();\n if (rawParams.length > 0) {\n // The `window.location.search` can be used while creating an instance of the `HttpParams` class\n // (e.g. `new HttpParams({ fromString: window.location.search })`). The `window.location.search`\n // may start with the `?` char, so we strip it if it's present.\n const params = rawParams.replace(/^\\?/, '').split('&');\n params.forEach((param) => {\n const eqIdx = param.indexOf('=');\n const [key, val] = eqIdx == -1 ?\n [codec.decodeKey(param), ''] :\n [codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))];\n const list = map.get(key) || [];\n list.push(val);\n map.set(key, list);\n });\n }\n return map;\n}\n/**\n * Encode input string with standard encodeURIComponent and then un-encode specific characters.\n */\nconst STANDARD_ENCODING_REGEX = /%(\\d[a-f0-9])/gi;\nconst STANDARD_ENCODING_REPLACEMENTS = {\n '40': '@',\n '3A': ':',\n '24': '$',\n '2C': ',',\n '3B': ';',\n '3D': '=',\n '3F': '?',\n '2F': '/',\n};\nfunction standardEncoding(v) {\n return encodeURIComponent(v).replace(STANDARD_ENCODING_REGEX, (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s);\n}\nfunction valueToString(value) {\n return `${value}`;\n}\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @publicApi\n */\nclass HttpParams {\n constructor(options = {}) {\n this.updates = null;\n this.cloneFrom = null;\n this.encoder = options.encoder || new HttpUrlEncodingCodec();\n if (!!options.fromString) {\n if (!!options.fromObject) {\n throw new Error(`Cannot specify both fromString and fromObject.`);\n }\n this.map = paramParser(options.fromString, this.encoder);\n }\n else if (!!options.fromObject) {\n this.map = new Map();\n Object.keys(options.fromObject).forEach(key => {\n const value = options.fromObject[key];\n // convert the values to strings\n const values = Array.isArray(value) ? value.map(valueToString) : [valueToString(value)];\n this.map.set(key, values);\n });\n }\n else {\n this.map = null;\n }\n }\n /**\n * Reports whether the body includes one or more values for a given parameter.\n * @param param The parameter name.\n * @returns True if the parameter has one or more values,\n * false if it has no value or is not present.\n */\n has(param) {\n this.init();\n return this.map.has(param);\n }\n /**\n * Retrieves the first value for a parameter.\n * @param param The parameter name.\n * @returns The first value of the given parameter,\n * or `null` if the parameter is not present.\n */\n get(param) {\n this.init();\n const res = this.map.get(param);\n return !!res ? res[0] : null;\n }\n /**\n * Retrieves all values for a parameter.\n * @param param The parameter name.\n * @returns All values in a string array,\n * or `null` if the parameter not present.\n */\n getAll(param) {\n this.init();\n return this.map.get(param) || null;\n }\n /**\n * Retrieves all the parameters for this body.\n * @returns The parameter names in a string array.\n */\n keys() {\n this.init();\n return Array.from(this.map.keys());\n }\n /**\n * Appends a new value to existing values for a parameter.\n * @param param The parameter name.\n * @param value The new value to add.\n * @return A new body with the appended value.\n */\n append(param, value) {\n return this.clone({ param, value, op: 'a' });\n }\n /**\n * Constructs a new body with appended values for the given parameter name.\n * @param params parameters and values\n * @return A new body with the new value.\n */\n appendAll(params) {\n const updates = [];\n Object.keys(params).forEach(param => {\n const value = params[param];\n if (Array.isArray(value)) {\n value.forEach(_value => {\n updates.push({ param, value: _value, op: 'a' });\n });\n }\n else {\n updates.push({ param, value: value, op: 'a' });\n }\n });\n return this.clone(updates);\n }\n /**\n * Replaces the value for a parameter.\n * @param param The parameter name.\n * @param value The new value.\n * @return A new body with the new value.\n */\n set(param, value) {\n return this.clone({ param, value, op: 's' });\n }\n /**\n * Removes a given value or all values from a parameter.\n * @param param The parameter name.\n * @param value The value to remove, if provided.\n * @return A new body with the given value removed, or with all values\n * removed if no value is specified.\n */\n delete(param, value) {\n return this.clone({ param, value, op: 'd' });\n }\n /**\n * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n * separated by `&`s.\n */\n toString() {\n this.init();\n return this.keys()\n .map(key => {\n const eKey = this.encoder.encodeKey(key);\n // `a: ['1']` produces `'a=1'`\n // `b: []` produces `''`\n // `c: ['1', '2']` produces `'c=1&c=2'`\n return this.map.get(key).map(value => eKey + '=' + this.encoder.encodeValue(value))\n .join('&');\n })\n // filter out empty values because `b: []` produces `''`\n // which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't\n .filter(param => param !== '')\n .join('&');\n }\n clone(update) {\n const clone = new HttpParams({ encoder: this.encoder });\n clone.cloneFrom = this.cloneFrom || this;\n clone.updates = (this.updates || []).concat(update);\n return clone;\n }\n init() {\n if (this.map === null) {\n this.map = new Map();\n }\n if (this.cloneFrom !== null) {\n this.cloneFrom.init();\n this.cloneFrom.keys().forEach(key => this.map.set(key, this.cloneFrom.map.get(key)));\n this.updates.forEach(update => {\n switch (update.op) {\n case 'a':\n case 's':\n const base = (update.op === 'a' ? this.map.get(update.param) : undefined) || [];\n base.push(valueToString(update.value));\n this.map.set(update.param, base);\n break;\n case 'd':\n if (update.value !== undefined) {\n let base = this.map.get(update.param) || [];\n const idx = base.indexOf(valueToString(update.value));\n if (idx !== -1) {\n base.splice(idx, 1);\n }\n if (base.length > 0) {\n this.map.set(update.param, base);\n }\n else {\n this.map.delete(update.param);\n }\n }\n else {\n this.map.delete(update.param);\n break;\n }\n }\n });\n this.cloneFrom = this.updates = null;\n }\n }\n}\n\n/**\n * A token used to manipulate and access values stored in `HttpContext`.\n *\n * @publicApi\n */\nclass HttpContextToken {\n constructor(defaultValue) {\n this.defaultValue = defaultValue;\n }\n}\n/**\n * Http context stores arbitrary user defined values and ensures type safety without\n * actually knowing the types. It is backed by a `Map` and guarantees that keys do not clash.\n *\n * This context is mutable and is shared between cloned requests unless explicitly specified.\n *\n * @usageNotes\n *\n * ### Usage Example\n *\n * ```typescript\n * // inside cache.interceptors.ts\n * export const IS_CACHE_ENABLED = new HttpContextToken(() => false);\n *\n * export class CacheInterceptor implements HttpInterceptor {\n *\n * intercept(req: HttpRequest, delegate: HttpHandler): Observable> {\n * if (req.context.get(IS_CACHE_ENABLED) === true) {\n * return ...;\n * }\n * return delegate.handle(req);\n * }\n * }\n *\n * // inside a service\n *\n * this.httpClient.get('/api/weather', {\n * context: new HttpContext().set(IS_CACHE_ENABLED, true)\n * }).subscribe(...);\n * ```\n *\n * @publicApi\n */\nclass HttpContext {\n constructor() {\n this.map = new Map();\n }\n /**\n * Store a value in the context. If a value is already present it will be overwritten.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n * @param value The value to store.\n *\n * @returns A reference to itself for easy chaining.\n */\n set(token, value) {\n this.map.set(token, value);\n return this;\n }\n /**\n * Retrieve the value associated with the given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns The stored value or default if one is defined.\n */\n get(token) {\n if (!this.map.has(token)) {\n this.map.set(token, token.defaultValue());\n }\n return this.map.get(token);\n }\n /**\n * Delete the value associated with the given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns A reference to itself for easy chaining.\n */\n delete(token) {\n this.map.delete(token);\n return this;\n }\n /**\n * Checks for existence of a given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns True if the token exists, false otherwise.\n */\n has(token) {\n return this.map.has(token);\n }\n /**\n * @returns a list of tokens currently stored in the context.\n */\n keys() {\n return this.map.keys();\n }\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method) {\n switch (method) {\n case 'DELETE':\n case 'GET':\n case 'HEAD':\n case 'OPTIONS':\n case 'JSONP':\n return false;\n default:\n return true;\n }\n}\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\nfunction isArrayBuffer(value) {\n return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\nfunction isBlob(value) {\n return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\nfunction isFormData(value) {\n return typeof FormData !== 'undefined' && value instanceof FormData;\n}\n/**\n * Safely assert whether the given value is a URLSearchParams instance.\n *\n * In some execution environments URLSearchParams is not defined.\n */\nfunction isUrlSearchParams(value) {\n return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;\n}\n/**\n * An outgoing HTTP request with an optional typed body.\n *\n * `HttpRequest` represents an outgoing request, including URL, method,\n * headers, body, and other request configuration options. Instances should be\n * assumed to be immutable. To modify a `HttpRequest`, the `clone`\n * method should be used.\n *\n * @publicApi\n */\nclass HttpRequest {\n constructor(method, url, third, fourth) {\n this.url = url;\n /**\n * The request body, or `null` if one isn't set.\n *\n * Bodies are not enforced to be immutable, as they can include a reference to any\n * user-defined data type. However, interceptors should take care to preserve\n * idempotence by treating them as such.\n */\n this.body = null;\n /**\n * Whether this request should be made in a way that exposes progress events.\n *\n * Progress events are expensive (change detection runs on each event) and so\n * they should only be requested if the consumer intends to monitor them.\n *\n * Note: The `FetchBackend` doesn't support progress report on uploads.\n */\n this.reportProgress = false;\n /**\n * Whether this request should be sent with outgoing credentials (cookies).\n */\n this.withCredentials = false;\n /**\n * The expected response type of the server.\n *\n * This is used to parse the response appropriately before returning it to\n * the requestee.\n */\n this.responseType = 'json';\n this.method = method.toUpperCase();\n // Next, need to figure out which argument holds the HttpRequestInit\n // options, if any.\n let options;\n // Check whether a body argument is expected. The only valid way to omit\n // the body argument is to use a known no-body method like GET.\n if (mightHaveBody(this.method) || !!fourth) {\n // Body is the third argument, options are the fourth.\n this.body = (third !== undefined) ? third : null;\n options = fourth;\n }\n else {\n // No body required, options are the third argument. The body stays null.\n options = third;\n }\n // If options have been passed, interpret them.\n if (options) {\n // Normalize reportProgress and withCredentials.\n this.reportProgress = !!options.reportProgress;\n this.withCredentials = !!options.withCredentials;\n // Override default response type of 'json' if one is provided.\n if (!!options.responseType) {\n this.responseType = options.responseType;\n }\n // Override headers if they're provided.\n if (!!options.headers) {\n this.headers = options.headers;\n }\n if (!!options.context) {\n this.context = options.context;\n }\n if (!!options.params) {\n this.params = options.params;\n }\n // We do want to assign transferCache even if it's falsy (false is valid value)\n this.transferCache = options.transferCache;\n }\n // If no headers have been passed in, construct a new HttpHeaders instance.\n if (!this.headers) {\n this.headers = new HttpHeaders();\n }\n // If no context have been passed in, construct a new HttpContext instance.\n if (!this.context) {\n this.context = new HttpContext();\n }\n // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.\n if (!this.params) {\n this.params = new HttpParams();\n this.urlWithParams = url;\n }\n else {\n // Encode the parameters to a string in preparation for inclusion in the URL.\n const params = this.params.toString();\n if (params.length === 0) {\n // No parameters, the visible URL is just the URL given at creation time.\n this.urlWithParams = url;\n }\n else {\n // Does the URL already have query parameters? Look for '?'.\n const qIdx = url.indexOf('?');\n // There are 3 cases to handle:\n // 1) No existing parameters -> append '?' followed by params.\n // 2) '?' exists and is followed by existing query string ->\n // append '&' followed by params.\n // 3) '?' exists at the end of the url -> append params directly.\n // This basically amounts to determining the character, if any, with\n // which to join the URL and parameters.\n const sep = qIdx === -1 ? '?' : (qIdx < url.length - 1 ? '&' : '');\n this.urlWithParams = url + sep + params;\n }\n }\n }\n /**\n * Transform the free-form body into a serialized format suitable for\n * transmission to the server.\n */\n serializeBody() {\n // If no body is present, no need to serialize it.\n if (this.body === null) {\n return null;\n }\n // Check whether the body is already in a serialized form. If so,\n // it can just be returned directly.\n if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) ||\n isUrlSearchParams(this.body) || typeof this.body === 'string') {\n return this.body;\n }\n // Check whether the body is an instance of HttpUrlEncodedParams.\n if (this.body instanceof HttpParams) {\n return this.body.toString();\n }\n // Check whether the body is an object or array, and serialize with JSON if so.\n if (typeof this.body === 'object' || typeof this.body === 'boolean' ||\n Array.isArray(this.body)) {\n return JSON.stringify(this.body);\n }\n // Fall back on toString() for everything else.\n return this.body.toString();\n }\n /**\n * Examine the body and attempt to infer an appropriate MIME type\n * for it.\n *\n * If no such type can be inferred, this method will return `null`.\n */\n detectContentTypeHeader() {\n // An empty body has no content type.\n if (this.body === null) {\n return null;\n }\n // FormData bodies rely on the browser's content type assignment.\n if (isFormData(this.body)) {\n return null;\n }\n // Blobs usually have their own content type. If it doesn't, then\n // no type can be inferred.\n if (isBlob(this.body)) {\n return this.body.type || null;\n }\n // Array buffers have unknown contents and thus no type can be inferred.\n if (isArrayBuffer(this.body)) {\n return null;\n }\n // Technically, strings could be a form of JSON data, but it's safe enough\n // to assume they're plain strings.\n if (typeof this.body === 'string') {\n return 'text/plain';\n }\n // `HttpUrlEncodedParams` has its own content-type.\n if (this.body instanceof HttpParams) {\n return 'application/x-www-form-urlencoded;charset=UTF-8';\n }\n // Arrays, objects, boolean and numbers will be encoded as JSON.\n if (typeof this.body === 'object' || typeof this.body === 'number' ||\n typeof this.body === 'boolean') {\n return 'application/json';\n }\n // No type could be inferred.\n return null;\n }\n clone(update = {}) {\n // For method, url, and responseType, take the current value unless\n // it is overridden in the update hash.\n const method = update.method || this.method;\n const url = update.url || this.url;\n const responseType = update.responseType || this.responseType;\n // The body is somewhat special - a `null` value in update.body means\n // whatever current body is present is being overridden with an empty\n // body, whereas an `undefined` value in update.body implies no\n // override.\n const body = (update.body !== undefined) ? update.body : this.body;\n // Carefully handle the boolean options to differentiate between\n // `false` and `undefined` in the update args.\n const withCredentials = (update.withCredentials !== undefined) ? update.withCredentials : this.withCredentials;\n const reportProgress = (update.reportProgress !== undefined) ? update.reportProgress : this.reportProgress;\n // Headers and params may be appended to if `setHeaders` or\n // `setParams` are used.\n let headers = update.headers || this.headers;\n let params = update.params || this.params;\n // Pass on context if needed\n const context = update.context ?? this.context;\n // Check whether the caller has asked to add headers.\n if (update.setHeaders !== undefined) {\n // Set every requested header.\n headers =\n Object.keys(update.setHeaders)\n .reduce((headers, name) => headers.set(name, update.setHeaders[name]), headers);\n }\n // Check whether the caller has asked to set params.\n if (update.setParams) {\n // Set every requested param.\n params = Object.keys(update.setParams)\n .reduce((params, param) => params.set(param, update.setParams[param]), params);\n }\n // Finally, construct the new HttpRequest using the pieces from above.\n return new HttpRequest(method, url, body, {\n params,\n headers,\n context,\n reportProgress,\n responseType,\n withCredentials,\n });\n }\n}\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @publicApi\n */\nvar HttpEventType;\n(function (HttpEventType) {\n /**\n * The request was sent out over the wire.\n */\n HttpEventType[HttpEventType[\"Sent\"] = 0] = \"Sent\";\n /**\n * An upload progress event was received.\n *\n * Note: The `FetchBackend` doesn't support progress report on uploads.\n */\n HttpEventType[HttpEventType[\"UploadProgress\"] = 1] = \"UploadProgress\";\n /**\n * The response status code and headers were received.\n */\n HttpEventType[HttpEventType[\"ResponseHeader\"] = 2] = \"ResponseHeader\";\n /**\n * A download progress event was received.\n */\n HttpEventType[HttpEventType[\"DownloadProgress\"] = 3] = \"DownloadProgress\";\n /**\n * The full response including the body was received.\n */\n HttpEventType[HttpEventType[\"Response\"] = 4] = \"Response\";\n /**\n * A custom event from an interceptor or a backend.\n */\n HttpEventType[HttpEventType[\"User\"] = 5] = \"User\";\n})(HttpEventType || (HttpEventType = {}));\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\nclass HttpResponseBase {\n /**\n * Super-constructor for all responses.\n *\n * The single parameter accepted is an initialization hash. Any properties\n * of the response passed there will override the default values.\n */\n constructor(init, defaultStatus = HttpStatusCode.Ok, defaultStatusText = 'OK') {\n // If the hash has values passed, use them to initialize the response.\n // Otherwise use the default values.\n this.headers = init.headers || new HttpHeaders();\n this.status = init.status !== undefined ? init.status : defaultStatus;\n this.statusText = init.statusText || defaultStatusText;\n this.url = init.url || null;\n // Cache the ok value to avoid defining a getter.\n this.ok = this.status >= 200 && this.status < 300;\n }\n}\n/**\n * A partial HTTP response which only includes the status and header data,\n * but no response body.\n *\n * `HttpHeaderResponse` is a `HttpEvent` available on the response\n * event stream, only when progress events are requested.\n *\n * @publicApi\n */\nclass HttpHeaderResponse extends HttpResponseBase {\n /**\n * Create a new `HttpHeaderResponse` with the given parameters.\n */\n constructor(init = {}) {\n super(init);\n this.type = HttpEventType.ResponseHeader;\n }\n /**\n * Copy this `HttpHeaderResponse`, overriding its contents with the\n * given parameter hash.\n */\n clone(update = {}) {\n // Perform a straightforward initialization of the new HttpHeaderResponse,\n // overriding the current parameters with new ones if given.\n return new HttpHeaderResponse({\n headers: update.headers || this.headers,\n status: update.status !== undefined ? update.status : this.status,\n statusText: update.statusText || this.statusText,\n url: update.url || this.url || undefined,\n });\n }\n}\n/**\n * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @publicApi\n */\nclass HttpResponse extends HttpResponseBase {\n /**\n * Construct a new `HttpResponse`.\n */\n constructor(init = {}) {\n super(init);\n this.type = HttpEventType.Response;\n this.body = init.body !== undefined ? init.body : null;\n }\n clone(update = {}) {\n return new HttpResponse({\n body: (update.body !== undefined) ? update.body : this.body,\n headers: update.headers || this.headers,\n status: (update.status !== undefined) ? update.status : this.status,\n statusText: update.statusText || this.statusText,\n url: update.url || this.url || undefined,\n });\n }\n}\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @publicApi\n */\nclass HttpErrorResponse extends HttpResponseBase {\n constructor(init) {\n // Initialize with a default status of 0 / Unknown Error.\n super(init, 0, 'Unknown Error');\n this.name = 'HttpErrorResponse';\n /**\n * Errors are never okay, even when the status code is in the 2xx success range.\n */\n this.ok = false;\n // If the response was successful, then this was a parse error. Otherwise, it was\n // a protocol-level failure of some sort. Either the request failed in transit\n // or the server returned an unsuccessful status code.\n if (this.status >= 200 && this.status < 300) {\n this.message = `Http failure during parsing for ${init.url || '(unknown url)'}`;\n }\n else {\n this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${init.statusText}`;\n }\n this.error = init.error || null;\n }\n}\n/**\n * Http status codes.\n * As per https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml\n * @publicApi\n */\nvar HttpStatusCode;\n(function (HttpStatusCode) {\n HttpStatusCode[HttpStatusCode[\"Continue\"] = 100] = \"Continue\";\n HttpStatusCode[HttpStatusCode[\"SwitchingProtocols\"] = 101] = \"SwitchingProtocols\";\n HttpStatusCode[HttpStatusCode[\"Processing\"] = 102] = \"Processing\";\n HttpStatusCode[HttpStatusCode[\"EarlyHints\"] = 103] = \"EarlyHints\";\n HttpStatusCode[HttpStatusCode[\"Ok\"] = 200] = \"Ok\";\n HttpStatusCode[HttpStatusCode[\"Created\"] = 201] = \"Created\";\n HttpStatusCode[HttpStatusCode[\"Accepted\"] = 202] = \"Accepted\";\n HttpStatusCode[HttpStatusCode[\"NonAuthoritativeInformation\"] = 203] = \"NonAuthoritativeInformation\";\n HttpStatusCode[HttpStatusCode[\"NoContent\"] = 204] = \"NoContent\";\n HttpStatusCode[HttpStatusCode[\"ResetContent\"] = 205] = \"ResetContent\";\n HttpStatusCode[HttpStatusCode[\"PartialContent\"] = 206] = \"PartialContent\";\n HttpStatusCode[HttpStatusCode[\"MultiStatus\"] = 207] = \"MultiStatus\";\n HttpStatusCode[HttpStatusCode[\"AlreadyReported\"] = 208] = \"AlreadyReported\";\n HttpStatusCode[HttpStatusCode[\"ImUsed\"] = 226] = \"ImUsed\";\n HttpStatusCode[HttpStatusCode[\"MultipleChoices\"] = 300] = \"MultipleChoices\";\n HttpStatusCode[HttpStatusCode[\"MovedPermanently\"] = 301] = \"MovedPermanently\";\n HttpStatusCode[HttpStatusCode[\"Found\"] = 302] = \"Found\";\n HttpStatusCode[HttpStatusCode[\"SeeOther\"] = 303] = \"SeeOther\";\n HttpStatusCode[HttpStatusCode[\"NotModified\"] = 304] = \"NotModified\";\n HttpStatusCode[HttpStatusCode[\"UseProxy\"] = 305] = \"UseProxy\";\n HttpStatusCode[HttpStatusCode[\"Unused\"] = 306] = \"Unused\";\n HttpStatusCode[HttpStatusCode[\"TemporaryRedirect\"] = 307] = \"TemporaryRedirect\";\n HttpStatusCode[HttpStatusCode[\"PermanentRedirect\"] = 308] = \"PermanentRedirect\";\n HttpStatusCode[HttpStatusCode[\"BadRequest\"] = 400] = \"BadRequest\";\n HttpStatusCode[HttpStatusCode[\"Unauthorized\"] = 401] = \"Unauthorized\";\n HttpStatusCode[HttpStatusCode[\"PaymentRequired\"] = 402] = \"PaymentRequired\";\n HttpStatusCode[HttpStatusCode[\"Forbidden\"] = 403] = \"Forbidden\";\n HttpStatusCode[HttpStatusCode[\"NotFound\"] = 404] = \"NotFound\";\n HttpStatusCode[HttpStatusCode[\"MethodNotAllowed\"] = 405] = \"MethodNotAllowed\";\n HttpStatusCode[HttpStatusCode[\"NotAcceptable\"] = 406] = \"NotAcceptable\";\n HttpStatusCode[HttpStatusCode[\"ProxyAuthenticationRequired\"] = 407] = \"ProxyAuthenticationRequired\";\n HttpStatusCode[HttpStatusCode[\"RequestTimeout\"] = 408] = \"RequestTimeout\";\n HttpStatusCode[HttpStatusCode[\"Conflict\"] = 409] = \"Conflict\";\n HttpStatusCode[HttpStatusCode[\"Gone\"] = 410] = \"Gone\";\n HttpStatusCode[HttpStatusCode[\"LengthRequired\"] = 411] = \"LengthRequired\";\n HttpStatusCode[HttpStatusCode[\"PreconditionFailed\"] = 412] = \"PreconditionFailed\";\n HttpStatusCode[HttpStatusCode[\"PayloadTooLarge\"] = 413] = \"PayloadTooLarge\";\n HttpStatusCode[HttpStatusCode[\"UriTooLong\"] = 414] = \"UriTooLong\";\n HttpStatusCode[HttpStatusCode[\"UnsupportedMediaType\"] = 415] = \"UnsupportedMediaType\";\n HttpStatusCode[HttpStatusCode[\"RangeNotSatisfiable\"] = 416] = \"RangeNotSatisfiable\";\n HttpStatusCode[HttpStatusCode[\"ExpectationFailed\"] = 417] = \"ExpectationFailed\";\n HttpStatusCode[HttpStatusCode[\"ImATeapot\"] = 418] = \"ImATeapot\";\n HttpStatusCode[HttpStatusCode[\"MisdirectedRequest\"] = 421] = \"MisdirectedRequest\";\n HttpStatusCode[HttpStatusCode[\"UnprocessableEntity\"] = 422] = \"UnprocessableEntity\";\n HttpStatusCode[HttpStatusCode[\"Locked\"] = 423] = \"Locked\";\n HttpStatusCode[HttpStatusCode[\"FailedDependency\"] = 424] = \"FailedDependency\";\n HttpStatusCode[HttpStatusCode[\"TooEarly\"] = 425] = \"TooEarly\";\n HttpStatusCode[HttpStatusCode[\"UpgradeRequired\"] = 426] = \"UpgradeRequired\";\n HttpStatusCode[HttpStatusCode[\"PreconditionRequired\"] = 428] = \"PreconditionRequired\";\n HttpStatusCode[HttpStatusCode[\"TooManyRequests\"] = 429] = \"TooManyRequests\";\n HttpStatusCode[HttpStatusCode[\"RequestHeaderFieldsTooLarge\"] = 431] = \"RequestHeaderFieldsTooLarge\";\n HttpStatusCode[HttpStatusCode[\"UnavailableForLegalReasons\"] = 451] = \"UnavailableForLegalReasons\";\n HttpStatusCode[HttpStatusCode[\"InternalServerError\"] = 500] = \"InternalServerError\";\n HttpStatusCode[HttpStatusCode[\"NotImplemented\"] = 501] = \"NotImplemented\";\n HttpStatusCode[HttpStatusCode[\"BadGateway\"] = 502] = \"BadGateway\";\n HttpStatusCode[HttpStatusCode[\"ServiceUnavailable\"] = 503] = \"ServiceUnavailable\";\n HttpStatusCode[HttpStatusCode[\"GatewayTimeout\"] = 504] = \"GatewayTimeout\";\n HttpStatusCode[HttpStatusCode[\"HttpVersionNotSupported\"] = 505] = \"HttpVersionNotSupported\";\n HttpStatusCode[HttpStatusCode[\"VariantAlsoNegotiates\"] = 506] = \"VariantAlsoNegotiates\";\n HttpStatusCode[HttpStatusCode[\"InsufficientStorage\"] = 507] = \"InsufficientStorage\";\n HttpStatusCode[HttpStatusCode[\"LoopDetected\"] = 508] = \"LoopDetected\";\n HttpStatusCode[HttpStatusCode[\"NotExtended\"] = 510] = \"NotExtended\";\n HttpStatusCode[HttpStatusCode[\"NetworkAuthenticationRequired\"] = 511] = \"NetworkAuthenticationRequired\";\n})(HttpStatusCode || (HttpStatusCode = {}));\n\n/**\n * Constructs an instance of `HttpRequestOptions` from a source `HttpMethodOptions` and\n * the given `body`. This function clones the object and adds the body.\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n *\n */\nfunction addBody(options, body) {\n return {\n body,\n headers: options.headers,\n context: options.context,\n observe: options.observe,\n params: options.params,\n reportProgress: options.reportProgress,\n responseType: options.responseType,\n withCredentials: options.withCredentials,\n transferCache: options.transferCache,\n };\n}\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n\n *\n * @usageNotes\n * Sample HTTP requests for the [Tour of Heroes](/tutorial/tour-of-heroes/toh-pt0) application.\n *\n * ### HTTP Request Example\n *\n * ```\n * // GET heroes whose name contains search term\n * searchHeroes(term: string): observable{\n *\n * const params = new HttpParams({fromString: 'name=term'});\n * return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n *\n * Alternatively, the parameter string can be used without invoking HttpParams\n * by directly joining to the URL.\n * ```\n * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});\n * ```\n *\n *\n * ### JSONP Example\n * ```\n * requestJsonp(url, callback = 'callback') {\n * return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`; // PATCH api/heroes/42\n * return this.httpClient.patch(url, {name: heroName}, httpOptions)\n * .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/understanding-communicating-with-http)\n * @see [HTTP Request](api/common/http/HttpRequest)\n *\n * @publicApi\n */\nclass HttpClient {\n constructor(handler) {\n this.handler = handler;\n }\n /**\n * Constructs an observable for a generic HTTP request that, when subscribed,\n * fires the request through the chain of registered interceptors and on to the\n * server.\n *\n * You can pass an `HttpRequest` directly as the only parameter. In this case,\n * the call returns an observable of the raw `HttpEvent` stream.\n *\n * Alternatively you can pass an HTTP method as the first parameter,\n * a URL string as the second, and an options hash containing the request body as the third.\n * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n * type of returned observable.\n * * The `responseType` value determines how a successful response body is parsed.\n * * If `responseType` is the default `json`, you can pass a type interface for the resulting\n * object as a type parameter to the call.\n *\n * The `observe` value determines the return type, according to what you are interested in\n * observing.\n * * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n * progress events by default.\n * * An `observe` value of response returns an observable of `HttpResponse`,\n * where the `T` parameter depends on the `responseType` and any optionally provided type\n * parameter.\n * * An `observe` value of body returns an observable of `` with the same `T` body type.\n *\n */\n request(first, url, options = {}) {\n let req;\n // First, check whether the primary argument is an instance of `HttpRequest`.\n if (first instanceof HttpRequest) {\n // It is. The other arguments must be undefined (per the signatures) and can be\n // ignored.\n req = first;\n }\n else {\n // It's a string, so it represents a URL. Construct a request based on it,\n // and incorporate the remaining arguments (assuming `GET` unless a method is\n // provided.\n // Figure out the headers.\n let headers = undefined;\n if (options.headers instanceof HttpHeaders) {\n headers = options.headers;\n }\n else {\n headers = new HttpHeaders(options.headers);\n }\n // Sort out parameters.\n let params = undefined;\n if (!!options.params) {\n if (options.params instanceof HttpParams) {\n params = options.params;\n }\n else {\n params = new HttpParams({ fromObject: options.params });\n }\n }\n // Construct the request.\n req = new HttpRequest(first, url, (options.body !== undefined ? options.body : null), {\n headers,\n context: options.context,\n params,\n reportProgress: options.reportProgress,\n // By default, JSON is assumed to be returned for all calls.\n responseType: options.responseType || 'json',\n withCredentials: options.withCredentials,\n transferCache: options.transferCache,\n });\n }\n // Start with an Observable.of() the initial request, and run the handler (which\n // includes all interceptors) inside a concatMap(). This way, the handler runs\n // inside an Observable chain, which causes interceptors to be re-run on every\n // subscription (this also makes retries re-run the handler, including interceptors).\n const events$ = of(req).pipe(concatMap((req) => this.handler.handle(req)));\n // If coming via the API signature which accepts a previously constructed HttpRequest,\n // the only option is to get the event stream. Otherwise, return the event stream if\n // that is what was requested.\n if (first instanceof HttpRequest || options.observe === 'events') {\n return events$;\n }\n // The requested stream contains either the full response or the body. In either\n // case, the first step is to filter the event stream to extract a stream of\n // responses(s).\n const res$ = events$.pipe(filter((event) => event instanceof HttpResponse));\n // Decide which stream to return.\n switch (options.observe || 'body') {\n case 'body':\n // The requested stream is the body. Map the response stream to the response\n // body. This could be done more simply, but a misbehaving interceptor might\n // transform the response body into a different format and ignore the requested\n // responseType. Guard against this by validating that the response is of the\n // requested type.\n switch (req.responseType) {\n case 'arraybuffer':\n return res$.pipe(map((res) => {\n // Validate that the body is an ArrayBuffer.\n if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n throw new Error('Response is not an ArrayBuffer.');\n }\n return res.body;\n }));\n case 'blob':\n return res$.pipe(map((res) => {\n // Validate that the body is a Blob.\n if (res.body !== null && !(res.body instanceof Blob)) {\n throw new Error('Response is not a Blob.');\n }\n return res.body;\n }));\n case 'text':\n return res$.pipe(map((res) => {\n // Validate that the body is a string.\n if (res.body !== null && typeof res.body !== 'string') {\n throw new Error('Response is not a string.');\n }\n return res.body;\n }));\n case 'json':\n default:\n // No validation needed for JSON responses, as they can be of any type.\n return res$.pipe(map((res) => res.body));\n }\n case 'response':\n // The response stream was requested directly, so return it.\n return res$;\n default:\n // Guard against new future observe types being added.\n throw new Error(`Unreachable: unhandled observe type ${options.observe}}`);\n }\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `DELETE` request to execute on the server. See the individual overloads for\n * details on the return type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n */\n delete(url, options = {}) {\n return this.request('DELETE', url, options);\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `GET` request to execute on the server. See the individual overloads for\n * details on the return type.\n */\n get(url, options = {}) {\n return this.request('GET', url, options);\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `HEAD` request to execute on the server. The `HEAD` method returns\n * meta information about the resource without transferring the\n * resource itself. See the individual overloads for\n * details on the return type.\n */\n head(url, options = {}) {\n return this.request('HEAD', url, options);\n }\n /**\n * Constructs an `Observable` that, when subscribed, causes a request with the special method\n * `JSONP` to be dispatched via the interceptor pipeline.\n * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n * API endpoints that don't support newer,\n * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n * application making the request.\n * The endpoint API must support JSONP callback for JSONP requests to work.\n * The resource API returns the JSON response wrapped in a callback function.\n * You can pass the callback function name as one of the query parameters.\n * Note that JSONP requests can only be used with `GET` requests.\n *\n * @param url The resource URL.\n * @param callbackParam The callback function name.\n *\n */\n jsonp(url, callbackParam) {\n return this.request('JSONP', url, {\n params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n observe: 'body',\n responseType: 'json',\n });\n }\n /**\n * Constructs an `Observable` that, when subscribed, causes the configured\n * `OPTIONS` request to execute on the server. This method allows the client\n * to determine the supported HTTP methods and other capabilities of an endpoint,\n * without implying a resource action. See the individual overloads for\n * details on the return type.\n */\n options(url, options = {}) {\n return this.request('OPTIONS', url, options);\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `PATCH` request to execute on the server. See the individual overloads for\n * details on the return type.\n */\n patch(url, body, options = {}) {\n return this.request('PATCH', url, addBody(options, body));\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `POST` request to execute on the server. The server responds with the location of\n * the replaced resource. See the individual overloads for\n * details on the return type.\n */\n post(url, body, options = {}) {\n return this.request('POST', url, addBody(options, body));\n }\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n * with a new set of values.\n * See the individual overloads for details on the return type.\n */\n put(url, body, options = {}) {\n return this.request('PUT', url, addBody(options, body));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpClient, deps: [{ token: HttpHandler }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpClient }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpClient, decorators: [{\n type: Injectable\n }], ctorParameters: () => [{ type: HttpHandler }] });\n\nconst XSSI_PREFIX$1 = /^\\)\\]\\}',?\\n/;\nconst REQUEST_URL_HEADER = `X-Request-URL`;\n/**\n * Determine an appropriate URL for the response, by checking either\n * response url or the X-Request-URL header.\n */\nfunction getResponseUrl$1(response) {\n if (response.url) {\n return response.url;\n }\n // stored as lowercase in the map\n const xRequestUrl = REQUEST_URL_HEADER.toLocaleLowerCase();\n return response.headers.get(xRequestUrl);\n}\n/**\n * Uses `fetch` to send requests to a backend server.\n *\n * This `FetchBackend` requires the support of the\n * [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) which is available on all\n * supported browsers and on Node.js v18 or later.\n *\n * @see {@link HttpHandler}\n *\n * @publicApi\n */\nclass FetchBackend {\n constructor() {\n // We need to bind the native fetch to its context or it will throw an \"illegal invocation\"\n this.fetchImpl = inject(FetchFactory, { optional: true })?.fetch ?? fetch.bind(globalThis);\n this.ngZone = inject(NgZone);\n }\n handle(request) {\n return new Observable(observer => {\n const aborter = new AbortController();\n this.doRequest(request, aborter.signal, observer)\n .then(noop, error => observer.error(new HttpErrorResponse({ error })));\n return () => aborter.abort();\n });\n }\n async doRequest(request, signal, observer) {\n const init = this.createRequestInit(request);\n let response;\n try {\n const fetchPromise = this.fetchImpl(request.urlWithParams, { signal, ...init });\n // Make sure Zone.js doesn't trigger false-positive unhandled promise\n // error in case the Promise is rejected synchronously. See function\n // description for additional information.\n silenceSuperfluousUnhandledPromiseRejection(fetchPromise);\n // Send the `Sent` event before awaiting the response.\n observer.next({ type: HttpEventType.Sent });\n response = await fetchPromise;\n }\n catch (error) {\n observer.error(new HttpErrorResponse({\n error,\n status: error.status ?? 0,\n statusText: error.statusText,\n url: request.urlWithParams,\n headers: error.headers,\n }));\n return;\n }\n const headers = new HttpHeaders(response.headers);\n const statusText = response.statusText;\n const url = getResponseUrl$1(response) ?? request.urlWithParams;\n let status = response.status;\n let body = null;\n if (request.reportProgress) {\n observer.next(new HttpHeaderResponse({ headers, status, statusText, url }));\n }\n if (response.body) {\n // Read Progress\n const contentLength = response.headers.get('content-length');\n const chunks = [];\n const reader = response.body.getReader();\n let receivedLength = 0;\n let decoder;\n let partialText;\n // We have to check whether the Zone is defined in the global scope because this may be called\n // when the zone is nooped.\n const reqZone = typeof Zone !== 'undefined' && Zone.current;\n // Perform response processing outside of Angular zone to\n // ensure no excessive change detection runs are executed\n // Here calling the async ReadableStreamDefaultReader.read() is responsible for triggering CD\n await this.ngZone.runOutsideAngular(async () => {\n while (true) {\n const { done, value } = await reader.read();\n if (done) {\n break;\n }\n chunks.push(value);\n receivedLength += value.length;\n if (request.reportProgress) {\n partialText = request.responseType === 'text' ?\n (partialText ?? '') + (decoder ??= new TextDecoder).decode(value, { stream: true }) :\n undefined;\n const reportProgress = () => observer.next({\n type: HttpEventType.DownloadProgress,\n total: contentLength ? +contentLength : undefined,\n loaded: receivedLength,\n partialText,\n });\n reqZone ? reqZone.run(reportProgress) : reportProgress();\n }\n }\n });\n // Combine all chunks.\n const chunksAll = this.concatChunks(chunks, receivedLength);\n try {\n const contentType = response.headers.get('Content-Type') ?? '';\n body = this.parseBody(request, chunksAll, contentType);\n }\n catch (error) {\n // Body loading or parsing failed\n observer.error(new HttpErrorResponse({\n error,\n headers: new HttpHeaders(response.headers),\n status: response.status,\n statusText: response.statusText,\n url: getResponseUrl$1(response) ?? request.urlWithParams,\n }));\n return;\n }\n }\n // Same behavior as the XhrBackend\n if (status === 0) {\n status = body ? HttpStatusCode.Ok : 0;\n }\n // ok determines whether the response will be transmitted on the event or\n // error channel. Unsuccessful status codes (not 2xx) will always be errors,\n // but a successful status code can still result in an error if the user\n // asked for JSON data and the body cannot be parsed as such.\n const ok = status >= 200 && status < 300;\n if (ok) {\n observer.next(new HttpResponse({\n body,\n headers,\n status,\n statusText,\n url,\n }));\n // The full body has been received and delivered, no further events\n // are possible. This request is complete.\n observer.complete();\n }\n else {\n observer.error(new HttpErrorResponse({\n error: body,\n headers,\n status,\n statusText,\n url,\n }));\n }\n }\n parseBody(request, binContent, contentType) {\n switch (request.responseType) {\n case 'json':\n // stripping the XSSI when present\n const text = new TextDecoder().decode(binContent).replace(XSSI_PREFIX$1, '');\n return text === '' ? null : JSON.parse(text);\n case 'text':\n return new TextDecoder().decode(binContent);\n case 'blob':\n return new Blob([binContent], { type: contentType });\n case 'arraybuffer':\n return binContent.buffer;\n }\n }\n createRequestInit(req) {\n // We could share some of this logic with the XhrBackend\n const headers = {};\n const credentials = req.withCredentials ? 'include' : undefined;\n // Setting all the requested headers.\n req.headers.forEach((name, values) => (headers[name] = values.join(',')));\n // Add an Accept header if one isn't present already.\n headers['Accept'] ??= 'application/json, text/plain, */*';\n // Auto-detect the Content-Type header if one isn't present already.\n if (!headers['Content-Type']) {\n const detectedType = req.detectContentTypeHeader();\n // Sometimes Content-Type detection fails.\n if (detectedType !== null) {\n headers['Content-Type'] = detectedType;\n }\n }\n return {\n body: req.serializeBody(),\n method: req.method,\n headers,\n credentials,\n };\n }\n concatChunks(chunks, totalLength) {\n const chunksAll = new Uint8Array(totalLength);\n let position = 0;\n for (const chunk of chunks) {\n chunksAll.set(chunk, position);\n position += chunk.length;\n }\n return chunksAll;\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: FetchBackend, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: FetchBackend }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: FetchBackend, decorators: [{\n type: Injectable\n }] });\n/**\n * Abstract class to provide a mocked implementation of `fetch()`\n */\nclass FetchFactory {\n}\nfunction noop() { }\n/**\n * Zone.js treats a rejected promise that has not yet been awaited\n * as an unhandled error. This function adds a noop `.then` to make\n * sure that Zone.js doesn't throw an error if the Promise is rejected\n * synchronously.\n */\nfunction silenceSuperfluousUnhandledPromiseRejection(promise) {\n promise.then(noop, noop);\n}\n\nfunction interceptorChainEndFn(req, finalHandlerFn) {\n return finalHandlerFn(req);\n}\n/**\n * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the\n * `ChainedInterceptorFn` interface.\n */\nfunction adaptLegacyInterceptorToChain(chainTailFn, interceptor) {\n return (initialRequest, finalHandlerFn) => interceptor.intercept(initialRequest, {\n handle: (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn),\n });\n}\n/**\n * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given\n * injector.\n */\nfunction chainedInterceptorFn(chainTailFn, interceptorFn, injector) {\n // clang-format off\n return (initialRequest, finalHandlerFn) => runInInjectionContext(injector, () => interceptorFn(initialRequest, downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)));\n // clang-format on\n}\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @publicApi\n */\nconst HTTP_INTERCEPTORS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTORS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s.\n */\nconst HTTP_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTOR_FNS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s that are only set in root.\n */\nconst HTTP_ROOT_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_ROOT_INTERCEPTOR_FNS' : '');\n/**\n * A provider to set a global primary http backend. If set, it will override the default one\n */\nconst PRIMARY_HTTP_BACKEND = new InjectionToken(ngDevMode ? 'PRIMARY_HTTP_BACKEND' : '');\n/**\n * Creates an `HttpInterceptorFn` which lazily initializes an interceptor chain from the legacy\n * class-based interceptors and runs the request through it.\n */\nfunction legacyInterceptorFnFactory() {\n let chain = null;\n return (req, handler) => {\n if (chain === null) {\n const interceptors = inject(HTTP_INTERCEPTORS, { optional: true }) ?? [];\n // Note: interceptors are wrapped right-to-left so that final execution order is\n // left-to-right. That is, if `interceptors` is the array `[a, b, c]`, we want to\n // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n // out.\n chain = interceptors.reduceRight(adaptLegacyInterceptorToChain, interceptorChainEndFn);\n }\n const pendingTasks = inject(ɵPendingTasks);\n const taskId = pendingTasks.add();\n return chain(req, handler).pipe(finalize(() => pendingTasks.remove(taskId)));\n };\n}\nlet fetchBackendWarningDisplayed = false;\n/** Internal function to reset the flag in tests */\nfunction resetFetchBackendWarningFlag() {\n fetchBackendWarningDisplayed = false;\n}\nclass HttpInterceptorHandler extends HttpHandler {\n constructor(backend, injector) {\n super();\n this.backend = backend;\n this.injector = injector;\n this.chain = null;\n this.pendingTasks = inject(ɵPendingTasks);\n // Check if there is a preferred HTTP backend configured and use it if that's the case.\n // This is needed to enable `FetchBackend` globally for all HttpClient's when `withFetch`\n // is used.\n const primaryHttpBackend = inject(PRIMARY_HTTP_BACKEND, { optional: true });\n this.backend = primaryHttpBackend ?? backend;\n // We strongly recommend using fetch backend for HTTP calls when SSR is used\n // for an application. The logic below checks if that's the case and produces\n // a warning otherwise.\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !fetchBackendWarningDisplayed) {\n const isServer = isPlatformServer(injector.get(PLATFORM_ID));\n if (isServer && !(this.backend instanceof FetchBackend)) {\n fetchBackendWarningDisplayed = true;\n injector.get(ɵConsole).warn(ɵformatRuntimeError(2801 /* RuntimeErrorCode.NOT_USING_FETCH_BACKEND_IN_SSR */, 'Angular detected that `HttpClient` is not configured ' +\n 'to use `fetch` APIs. It\\'s strongly recommended to ' +\n 'enable `fetch` for applications that use Server-Side Rendering ' +\n 'for better performance and compatibility. ' +\n 'To enable `fetch`, add the `withFetch()` to the `provideHttpClient()` ' +\n 'call at the root of the application.'));\n }\n }\n }\n handle(initialRequest) {\n if (this.chain === null) {\n const dedupedInterceptorFns = Array.from(new Set([\n ...this.injector.get(HTTP_INTERCEPTOR_FNS),\n ...this.injector.get(HTTP_ROOT_INTERCEPTOR_FNS, []),\n ]));\n // Note: interceptors are wrapped right-to-left so that final execution order is\n // left-to-right. That is, if `dedupedInterceptorFns` is the array `[a, b, c]`, we want to\n // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n // out.\n this.chain = dedupedInterceptorFns.reduceRight((nextSequencedFn, interceptorFn) => chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector), interceptorChainEndFn);\n }\n const taskId = this.pendingTasks.add();\n return this.chain(initialRequest, downstreamRequest => this.backend.handle(downstreamRequest))\n .pipe(finalize(() => this.pendingTasks.remove(taskId)));\n }\n static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpInterceptorHandler, deps: [{ token: HttpBackend }, { token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }\n static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpInterceptorHandler }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.1.0\", ngImport: i0, type: HttpInterceptorHandler, decorators: [{\n type: Injectable\n }], ctorParameters: () => [{ type: HttpBackend }, { type: i0.EnvironmentInjector }] });\n\n// Every request made through JSONP needs a callback name that's unique across the\n// whole page. Each request is assigned an id and the callback name is constructed\n// from that. The next id to be assigned is tracked in a global variable here that\n// is shared among all applications on the page.\nlet nextRequestId = 0;\n/**\n * When a pending