) must have projection slots defined.');\n}\n\nfunction assertParentView(lView, errMessage) {\n assertDefined(lView, errMessage || 'Component views should always have a parent view (component\\'s host view)');\n}\n/**\n * This is a basic sanity check that the `injectorIndex` seems to point to what looks like a\n * NodeInjector data structure.\n *\n * @param lView `LView` which should be checked.\n * @param injectorIndex index into the `LView` where the `NodeInjector` is expected.\n */\n\n\nfunction assertNodeInjector(lView, injectorIndex) {\n assertIndexInExpandoRange(lView, injectorIndex);\n assertIndexInExpandoRange(lView, injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n );\n assertNumber(lView[injectorIndex + 0], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 1], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 2], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 3], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 4], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 5], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 6], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 7], 'injectorIndex should point to a bloom filter');\n assertNumber(lView[injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n ], 'injectorIndex should point to parent injector');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getFactoryDef(type, throwNotFound) {\n const hasFactoryDef = type.hasOwnProperty(NG_FACTORY_DEF);\n\n if (!hasFactoryDef && throwNotFound === true && ngDevMode) {\n throw new Error(`Type ${stringify(type)} does not have 'ɵfac' property.`);\n }\n\n return hasFactoryDef ? type[NG_FACTORY_DEF] : null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents a basic change from a previous to a new value for a single\n * property on a directive instance. Passed as a value in a\n * {@link SimpleChanges} object to the `ngOnChanges` hook.\n *\n * @see `OnChanges`\n *\n * @publicApi\n */\n\n\nclass SimpleChange {\n constructor(previousValue, currentValue, firstChange) {\n this.previousValue = previousValue;\n this.currentValue = currentValue;\n this.firstChange = firstChange;\n }\n /**\n * Check whether the new value is the first value assigned.\n */\n\n\n isFirstChange() {\n return this.firstChange;\n }\n\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The NgOnChangesFeature decorates a component with support for the ngOnChanges\n * lifecycle hook, so it should be included in any component that implements\n * that hook.\n *\n * If the component or directive uses inheritance, the NgOnChangesFeature MUST\n * be included as a feature AFTER {@link InheritDefinitionFeature}, otherwise\n * inherited properties will not be propagated to the ngOnChanges lifecycle\n * hook.\n *\n * Example usage:\n *\n * ```\n * static ɵcmp = defineComponent({\n * ...\n * inputs: {name: 'publicName'},\n * features: [NgOnChangesFeature]\n * });\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵNgOnChangesFeature() {\n return NgOnChangesFeatureImpl;\n}\n\nfunction NgOnChangesFeatureImpl(definition) {\n if (definition.type.prototype.ngOnChanges) {\n definition.setInput = ngOnChangesSetInput;\n }\n\n return rememberChangeHistoryAndInvokeOnChangesHook;\n} // This option ensures that the ngOnChanges lifecycle hook will be inherited\n// from superclasses (in InheritDefinitionFeature).\n\n/** @nocollapse */\n// tslint:disable-next-line:no-toplevel-property-access\n\n\nɵɵNgOnChangesFeature.ngInherit = true;\n/**\n * This is a synthetic lifecycle hook which gets inserted into `TView.preOrderHooks` to simulate\n * `ngOnChanges`.\n *\n * The hook reads the `NgSimpleChangesStore` data from the component instance and if changes are\n * found it invokes `ngOnChanges` on the component instance.\n *\n * @param this Component instance. Because this function gets inserted into `TView.preOrderHooks`,\n * it is guaranteed to be called with component instance.\n */\n\nfunction rememberChangeHistoryAndInvokeOnChangesHook() {\n const simpleChangesStore = getSimpleChangesStore(this);\n const current = simpleChangesStore?.current;\n\n if (current) {\n const previous = simpleChangesStore.previous;\n\n if (previous === EMPTY_OBJ) {\n simpleChangesStore.previous = current;\n } else {\n // New changes are copied to the previous store, so that we don't lose history for inputs\n // which were not changed this time\n for (let key in current) {\n previous[key] = current[key];\n }\n }\n\n simpleChangesStore.current = null;\n this.ngOnChanges(current);\n }\n}\n\nfunction ngOnChangesSetInput(instance, value, publicName, privateName) {\n const simpleChangesStore = getSimpleChangesStore(instance) || setSimpleChangesStore(instance, {\n previous: EMPTY_OBJ,\n current: null\n });\n const current = simpleChangesStore.current || (simpleChangesStore.current = {});\n const previous = simpleChangesStore.previous;\n const declaredName = this.declaredInputs[publicName];\n const previousChange = previous[declaredName];\n current[declaredName] = new SimpleChange(previousChange && previousChange.currentValue, value, previous === EMPTY_OBJ);\n instance[privateName] = value;\n}\n\nconst SIMPLE_CHANGES_STORE = '__ngSimpleChanges__';\n\nfunction getSimpleChangesStore(instance) {\n return instance[SIMPLE_CHANGES_STORE] || null;\n}\n\nfunction setSimpleChangesStore(instance, store) {\n return instance[SIMPLE_CHANGES_STORE] = store;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nlet profilerCallback = null;\n/**\n * Sets the callback function which will be invoked before and after performing certain actions at\n * runtime (for example, before and after running change detection).\n *\n * Warning: this function is *INTERNAL* and should not be relied upon in application's code.\n * The contract of the function might be changed in any release and/or the function can be removed\n * completely.\n *\n * @param profiler function provided by the caller or null value to disable profiling.\n */\n\nconst setProfiler = profiler => {\n profilerCallback = profiler;\n};\n/**\n * Profiler function which wraps user code executed by the runtime.\n *\n * @param event ProfilerEvent corresponding to the execution context\n * @param instance component instance\n * @param hookOrListener lifecycle hook function or output listener. The value depends on the\n * execution context\n * @returns\n */\n\n\nconst profiler = function (event, instance, hookOrListener) {\n if (profilerCallback != null\n /* both `null` and `undefined` */\n ) {\n profilerCallback(event, instance, hookOrListener);\n }\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nconst SVG_NAMESPACE = 'svg';\nconst SVG_NAMESPACE_URI = 'http://www.w3.org/2000/svg';\nconst MATH_ML_NAMESPACE = 'math';\nconst MATH_ML_NAMESPACE_URI = 'http://www.w3.org/1998/MathML/';\n\nfunction getNamespaceUri(namespace) {\n const name = namespace.toLowerCase();\n return name === SVG_NAMESPACE ? SVG_NAMESPACE_URI : name === MATH_ML_NAMESPACE ? MATH_ML_NAMESPACE_URI : null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * For efficiency reasons we often put several different data types (`RNode`, `LView`, `LContainer`)\n * in same location in `LView`. This is because we don't want to pre-allocate space for it\n * because the storage is sparse. This file contains utilities for dealing with such data types.\n *\n * How do we know what is stored at a given location in `LView`.\n * - `Array.isArray(value) === false` => `RNode` (The normal storage value)\n * - `Array.isArray(value) === true` => then the `value[0]` represents the wrapped value.\n * - `typeof value[TYPE] === 'object'` => `LView`\n * - This happens when we have a component at a given location\n * - `typeof value[TYPE] === true` => `LContainer`\n * - This happens when we have `LContainer` binding at a given location.\n *\n *\n * NOTE: it is assumed that `Array.isArray` and `typeof` operations are very efficient.\n */\n\n/**\n * Returns `RNode`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction unwrapRNode(value) {\n while (Array.isArray(value)) {\n value = value[HOST];\n }\n\n return value;\n}\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction unwrapLView(value) {\n while (Array.isArray(value)) {\n // This check is same as `isLView()` but we don't call at as we don't want to call\n // `Array.isArray()` twice and give JITer more work for inlining.\n if (typeof value[TYPE] === 'object') return value;\n value = value[HOST];\n }\n\n return null;\n}\n/**\n * Returns `LContainer` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction unwrapLContainer(value) {\n while (Array.isArray(value)) {\n // This check is same as `isLContainer()` but we don't call at as we don't want to call\n // `Array.isArray()` twice and give JITer more work for inlining.\n if (value[TYPE] === true) return value;\n value = value[HOST];\n }\n\n return null;\n}\n/**\n * Retrieves an element value from the provided `viewData`, by unwrapping\n * from any containers, component views, or style contexts.\n */\n\n\nfunction getNativeByIndex(index, lView) {\n ngDevMode && assertIndexInRange(lView, index);\n ngDevMode && assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Expected to be past HEADER_OFFSET');\n return unwrapRNode(lView[index]);\n}\n/**\n * Retrieve an `RNode` for a given `TNode` and `LView`.\n *\n * This function guarantees in dev mode to retrieve a non-null `RNode`.\n *\n * @param tNode\n * @param lView\n */\n\n\nfunction getNativeByTNode(tNode, lView) {\n ngDevMode && assertTNodeForLView(tNode, lView);\n ngDevMode && assertIndexInRange(lView, tNode.index);\n const node = unwrapRNode(lView[tNode.index]);\n return node;\n}\n/**\n * Retrieve an `RNode` or `null` for a given `TNode` and `LView`.\n *\n * Some `TNode`s don't have associated `RNode`s. For example `Projection`\n *\n * @param tNode\n * @param lView\n */\n\n\nfunction getNativeByTNodeOrNull(tNode, lView) {\n const index = tNode === null ? -1 : tNode.index;\n\n if (index !== -1) {\n ngDevMode && assertTNodeForLView(tNode, lView);\n const node = unwrapRNode(lView[index]);\n return node;\n }\n\n return null;\n} // fixme(misko): The return Type should be `TNode|null`\n\n\nfunction getTNode(tView, index) {\n ngDevMode && assertGreaterThan(index, -1, 'wrong index for TNode');\n ngDevMode && assertLessThan(index, tView.data.length, 'wrong index for TNode');\n const tNode = tView.data[index];\n ngDevMode && tNode !== null && assertTNode(tNode);\n return tNode;\n}\n/** Retrieves a value from any `LView` or `TData`. */\n\n\nfunction load(view, index) {\n ngDevMode && assertIndexInRange(view, index);\n return view[index];\n}\n\nfunction getComponentLViewByIndex(nodeIndex, hostView) {\n // Could be an LView or an LContainer. If LContainer, unwrap to find LView.\n ngDevMode && assertIndexInRange(hostView, nodeIndex);\n const slotValue = hostView[nodeIndex];\n const lView = isLView(slotValue) ? slotValue : slotValue[HOST];\n return lView;\n}\n/** Checks whether a given view is in creation mode */\n\n\nfunction isCreationMode(view) {\n return (view[FLAGS] & 4\n /* LViewFlags.CreationMode */\n ) === 4\n /* LViewFlags.CreationMode */\n ;\n}\n/**\n * Returns a boolean for whether the view is attached to the change detection tree.\n *\n * Note: This determines whether a view should be checked, not whether it's inserted\n * into a container. For that, you'll want `viewAttachedToContainer` below.\n */\n\n\nfunction viewAttachedToChangeDetector(view) {\n return (view[FLAGS] & 64\n /* LViewFlags.Attached */\n ) === 64\n /* LViewFlags.Attached */\n ;\n}\n/** Returns a boolean for whether the view is attached to a container. */\n\n\nfunction viewAttachedToContainer(view) {\n return isLContainer(view[PARENT]);\n}\n\nfunction getConstant(consts, index) {\n if (index === null || index === undefined) return null;\n ngDevMode && assertIndexInRange(consts, index);\n return consts[index];\n}\n/**\n * Resets the pre-order hook flags of the view.\n * @param lView the LView on which the flags are reset\n */\n\n\nfunction resetPreOrderHookFlags(lView) {\n lView[PREORDER_HOOK_FLAGS] = 0;\n}\n/**\n * Updates the `TRANSPLANTED_VIEWS_TO_REFRESH` counter on the `LContainer` as well as the parents\n * whose\n * 1. counter goes from 0 to 1, indicating that there is a new child that has a view to refresh\n * or\n * 2. counter goes from 1 to 0, indicating there are no more descendant views to refresh\n */\n\n\nfunction updateTransplantedViewCount(lContainer, amount) {\n lContainer[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n let viewOrContainer = lContainer;\n let parent = lContainer[PARENT];\n\n while (parent !== null && (amount === 1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 1 || amount === -1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 0)) {\n parent[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n viewOrContainer = parent;\n parent = parent[PARENT];\n }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nconst instructionState = {\n lFrame: createLFrame(null),\n bindingsEnabled: true\n};\n/**\n * In this mode, any changes in bindings will throw an ExpressionChangedAfterChecked error.\n *\n * Necessary to support ChangeDetectorRef.checkNoChanges().\n *\n * The `checkNoChanges` function is invoked only in ngDevMode=true and verifies that no unintended\n * changes exist in the change detector or its children.\n */\n\nlet _isInCheckNoChangesMode = false;\n/**\n * Returns true if the instruction state stack is empty.\n *\n * Intended to be called from tests only (tree shaken otherwise).\n */\n\nfunction specOnlyIsInstructionStateEmpty() {\n return instructionState.lFrame.parent === null;\n}\n\nfunction getElementDepthCount() {\n return instructionState.lFrame.elementDepthCount;\n}\n\nfunction increaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount++;\n}\n\nfunction decreaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount--;\n}\n\nfunction getBindingsEnabled() {\n return instructionState.bindingsEnabled;\n}\n/**\n * Enables directive matching on elements.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n * \n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵenableBindings() {\n instructionState.bindingsEnabled = true;\n}\n/**\n * Disables directive matching on element.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n * \n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵdisableBindings() {\n instructionState.bindingsEnabled = false;\n}\n/**\n * Return the current `LView`.\n */\n\n\nfunction getLView() {\n return instructionState.lFrame.lView;\n}\n/**\n * Return the current `TView`.\n */\n\n\nfunction getTView() {\n return instructionState.lFrame.tView;\n}\n/**\n * Restores `contextViewData` to the given OpaqueViewState instance.\n *\n * Used in conjunction with the getCurrentView() instruction to save a snapshot\n * of the current view and restore it when listeners are invoked. This allows\n * walking the declaration view tree in listeners to get vars from parent views.\n *\n * @param viewToRestore The OpaqueViewState instance to restore.\n * @returns Context of the restored OpaqueViewState instance.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵrestoreView(viewToRestore) {\n instructionState.lFrame.contextLView = viewToRestore;\n return viewToRestore[CONTEXT];\n}\n/**\n * Clears the view set in `ɵɵrestoreView` from memory. Returns the passed in\n * value so that it can be used as a return value of an instruction.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵresetView(value) {\n instructionState.lFrame.contextLView = null;\n return value;\n}\n\nfunction getCurrentTNode() {\n let currentTNode = getCurrentTNodePlaceholderOk();\n\n while (currentTNode !== null && currentTNode.type === 64\n /* TNodeType.Placeholder */\n ) {\n currentTNode = currentTNode.parent;\n }\n\n return currentTNode;\n}\n\nfunction getCurrentTNodePlaceholderOk() {\n return instructionState.lFrame.currentTNode;\n}\n\nfunction getCurrentParentTNode() {\n const lFrame = instructionState.lFrame;\n const currentTNode = lFrame.currentTNode;\n return lFrame.isParent ? currentTNode : currentTNode.parent;\n}\n\nfunction setCurrentTNode(tNode, isParent) {\n ngDevMode && tNode && assertTNodeForTView(tNode, instructionState.lFrame.tView);\n const lFrame = instructionState.lFrame;\n lFrame.currentTNode = tNode;\n lFrame.isParent = isParent;\n}\n\nfunction isCurrentTNodeParent() {\n return instructionState.lFrame.isParent;\n}\n\nfunction setCurrentTNodeAsNotParent() {\n instructionState.lFrame.isParent = false;\n}\n\nfunction setCurrentTNodeAsParent() {\n instructionState.lFrame.isParent = true;\n}\n\nfunction getContextLView() {\n const contextLView = instructionState.lFrame.contextLView;\n ngDevMode && assertDefined(contextLView, 'contextLView must be defined.');\n return contextLView;\n}\n\nfunction isInCheckNoChangesMode() {\n !ngDevMode && throwError('Must never be called in production mode');\n return _isInCheckNoChangesMode;\n}\n\nfunction setIsInCheckNoChangesMode(mode) {\n !ngDevMode && throwError('Must never be called in production mode');\n _isInCheckNoChangesMode = mode;\n} // top level variables should not be exported for performance reasons (PERF_NOTES.md)\n\n\nfunction getBindingRoot() {\n const lFrame = instructionState.lFrame;\n let index = lFrame.bindingRootIndex;\n\n if (index === -1) {\n index = lFrame.bindingRootIndex = lFrame.tView.bindingStartIndex;\n }\n\n return index;\n}\n\nfunction getBindingIndex() {\n return instructionState.lFrame.bindingIndex;\n}\n\nfunction setBindingIndex(value) {\n return instructionState.lFrame.bindingIndex = value;\n}\n\nfunction nextBindingIndex() {\n return instructionState.lFrame.bindingIndex++;\n}\n\nfunction incrementBindingIndex(count) {\n const lFrame = instructionState.lFrame;\n const index = lFrame.bindingIndex;\n lFrame.bindingIndex = lFrame.bindingIndex + count;\n return index;\n}\n\nfunction isInI18nBlock() {\n return instructionState.lFrame.inI18n;\n}\n\nfunction setInI18nBlock(isInI18nBlock) {\n instructionState.lFrame.inI18n = isInI18nBlock;\n}\n/**\n * Set a new binding root index so that host template functions can execute.\n *\n * Bindings inside the host template are 0 index. But because we don't know ahead of time\n * how many host bindings we have we can't pre-compute them. For this reason they are all\n * 0 index and we just shift the root so that they match next available location in the LView.\n *\n * @param bindingRootIndex Root index for `hostBindings`\n * @param currentDirectiveIndex `TData[currentDirectiveIndex]` will point to the current directive\n * whose `hostBindings` are being processed.\n */\n\n\nfunction setBindingRootForHostBindings(bindingRootIndex, currentDirectiveIndex) {\n const lFrame = instructionState.lFrame;\n lFrame.bindingIndex = lFrame.bindingRootIndex = bindingRootIndex;\n setCurrentDirectiveIndex(currentDirectiveIndex);\n}\n/**\n * When host binding is executing this points to the directive index.\n * `TView.data[getCurrentDirectiveIndex()]` is `DirectiveDef`\n * `LView[getCurrentDirectiveIndex()]` is directive instance.\n */\n\n\nfunction getCurrentDirectiveIndex() {\n return instructionState.lFrame.currentDirectiveIndex;\n}\n/**\n * Sets an index of a directive whose `hostBindings` are being processed.\n *\n * @param currentDirectiveIndex `TData` index where current directive instance can be found.\n */\n\n\nfunction setCurrentDirectiveIndex(currentDirectiveIndex) {\n instructionState.lFrame.currentDirectiveIndex = currentDirectiveIndex;\n}\n/**\n * Retrieve the current `DirectiveDef` which is active when `hostBindings` instruction is being\n * executed.\n *\n * @param tData Current `TData` where the `DirectiveDef` will be looked up at.\n */\n\n\nfunction getCurrentDirectiveDef(tData) {\n const currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex];\n}\n\nfunction getCurrentQueryIndex() {\n return instructionState.lFrame.currentQueryIndex;\n}\n\nfunction setCurrentQueryIndex(value) {\n instructionState.lFrame.currentQueryIndex = value;\n}\n/**\n * Returns a `TNode` of the location where the current `LView` is declared at.\n *\n * @param lView an `LView` that we want to find parent `TNode` for.\n */\n\n\nfunction getDeclarationTNode(lView) {\n const tView = lView[TVIEW]; // Return the declaration parent for embedded views\n\n if (tView.type === 2\n /* TViewType.Embedded */\n ) {\n ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n return tView.declTNode;\n } // Components don't have `TView.declTNode` because each instance of component could be\n // inserted in different location, hence `TView.declTNode` is meaningless.\n // Falling back to `T_HOST` in case we cross component boundary.\n\n\n if (tView.type === 1\n /* TViewType.Component */\n ) {\n return lView[T_HOST];\n } // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\n\n\n return null;\n}\n/**\n * This is a light weight version of the `enterView` which is needed by the DI system.\n *\n * @param lView `LView` location of the DI context.\n * @param tNode `TNode` for DI context\n * @param flags DI context flags. if `SkipSelf` flag is set than we walk up the declaration\n * tree from `tNode` until we find parent declared `TElementNode`.\n * @returns `true` if we have successfully entered DI associated with `tNode` (or with declared\n * `TNode` if `flags` has `SkipSelf`). Failing to enter DI implies that no associated\n * `NodeInjector` can be found and we should instead use `ModuleInjector`.\n * - If `true` than this call must be fallowed by `leaveDI`\n * - If `false` than this call failed and we should NOT call `leaveDI`\n */\n\n\nfunction enterDI(lView, tNode, flags) {\n ngDevMode && assertLViewOrUndefined(lView);\n\n if (flags & InjectFlags.SkipSelf) {\n ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n let parentTNode = tNode;\n let parentLView = lView;\n\n while (true) {\n ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n parentTNode = parentTNode.parent;\n\n if (parentTNode === null && !(flags & InjectFlags.Host)) {\n parentTNode = getDeclarationTNode(parentLView);\n if (parentTNode === null) break; // In this case, a parent exists and is definitely an element. So it will definitely\n // have an existing lView as the declaration view, which is why we can assume it's defined.\n\n ngDevMode && assertDefined(parentLView, 'Parent LView should be defined');\n parentLView = parentLView[DECLARATION_VIEW]; // In Ivy there are Comment nodes that correspond to ngIf and NgFor embedded directives\n // We want to skip those and look only at Elements and ElementContainers to ensure\n // we're looking at true parent nodes, and not content or other types.\n\n if (parentTNode.type & (2\n /* TNodeType.Element */\n | 8\n /* TNodeType.ElementContainer */\n )) {\n break;\n }\n } else {\n break;\n }\n }\n\n if (parentTNode === null) {\n // If we failed to find a parent TNode this means that we should use module injector.\n return false;\n } else {\n tNode = parentTNode;\n lView = parentLView;\n }\n }\n\n ngDevMode && assertTNodeForLView(tNode, lView);\n const lFrame = instructionState.lFrame = allocLFrame();\n lFrame.currentTNode = tNode;\n lFrame.lView = lView;\n return true;\n}\n/**\n * Swap the current lView with a new lView.\n *\n * For performance reasons we store the lView in the top level of the module.\n * This way we minimize the number of properties to read. Whenever a new view\n * is entered we have to store the lView for later, and when the view is\n * exited the state has to be restored\n *\n * @param newView New lView to become active\n * @returns the previously active lView;\n */\n\n\nfunction enterView(newView) {\n ngDevMode && assertNotEqual(newView[0], newView[1], '????');\n ngDevMode && assertLViewOrUndefined(newView);\n const newLFrame = allocLFrame();\n\n if (ngDevMode) {\n assertEqual(newLFrame.isParent, true, 'Expected clean LFrame');\n assertEqual(newLFrame.lView, null, 'Expected clean LFrame');\n assertEqual(newLFrame.tView, null, 'Expected clean LFrame');\n assertEqual(newLFrame.selectedIndex, -1, 'Expected clean LFrame');\n assertEqual(newLFrame.elementDepthCount, 0, 'Expected clean LFrame');\n assertEqual(newLFrame.currentDirectiveIndex, -1, 'Expected clean LFrame');\n assertEqual(newLFrame.currentNamespace, null, 'Expected clean LFrame');\n assertEqual(newLFrame.bindingRootIndex, -1, 'Expected clean LFrame');\n assertEqual(newLFrame.currentQueryIndex, 0, 'Expected clean LFrame');\n }\n\n const tView = newView[TVIEW];\n instructionState.lFrame = newLFrame;\n ngDevMode && tView.firstChild && assertTNodeForTView(tView.firstChild, tView);\n newLFrame.currentTNode = tView.firstChild;\n newLFrame.lView = newView;\n newLFrame.tView = tView;\n newLFrame.contextLView = newView;\n newLFrame.bindingIndex = tView.bindingStartIndex;\n newLFrame.inI18n = false;\n}\n/**\n * Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.\n */\n\n\nfunction allocLFrame() {\n const currentLFrame = instructionState.lFrame;\n const childLFrame = currentLFrame === null ? null : currentLFrame.child;\n const newLFrame = childLFrame === null ? createLFrame(currentLFrame) : childLFrame;\n return newLFrame;\n}\n\nfunction createLFrame(parent) {\n const lFrame = {\n currentTNode: null,\n isParent: true,\n lView: null,\n tView: null,\n selectedIndex: -1,\n contextLView: null,\n elementDepthCount: 0,\n currentNamespace: null,\n currentDirectiveIndex: -1,\n bindingRootIndex: -1,\n bindingIndex: -1,\n currentQueryIndex: 0,\n parent: parent,\n child: null,\n inI18n: false\n };\n parent !== null && (parent.child = lFrame); // link the new LFrame for reuse.\n\n return lFrame;\n}\n/**\n * A lightweight version of leave which is used with DI.\n *\n * This function only resets `currentTNode` and `LView` as those are the only properties\n * used with DI (`enterDI()`).\n *\n * NOTE: This function is reexported as `leaveDI`. However `leaveDI` has return type of `void` where\n * as `leaveViewLight` has `LFrame`. This is so that `leaveViewLight` can be used in `leaveView`.\n */\n\n\nfunction leaveViewLight() {\n const oldLFrame = instructionState.lFrame;\n instructionState.lFrame = oldLFrame.parent;\n oldLFrame.currentTNode = null;\n oldLFrame.lView = null;\n return oldLFrame;\n}\n/**\n * This is a lightweight version of the `leaveView` which is needed by the DI system.\n *\n * NOTE: this function is an alias so that we can change the type of the function to have `void`\n * return type.\n */\n\n\nconst leaveDI = leaveViewLight;\n/**\n * Leave the current `LView`\n *\n * This pops the `LFrame` with the associated `LView` from the stack.\n *\n * IMPORTANT: We must zero out the `LFrame` values here otherwise they will be retained. This is\n * because for performance reasons we don't release `LFrame` but rather keep it for next use.\n */\n\nfunction leaveView() {\n const oldLFrame = leaveViewLight();\n oldLFrame.isParent = true;\n oldLFrame.tView = null;\n oldLFrame.selectedIndex = -1;\n oldLFrame.contextLView = null;\n oldLFrame.elementDepthCount = 0;\n oldLFrame.currentDirectiveIndex = -1;\n oldLFrame.currentNamespace = null;\n oldLFrame.bindingRootIndex = -1;\n oldLFrame.bindingIndex = -1;\n oldLFrame.currentQueryIndex = 0;\n}\n\nfunction nextContextImpl(level) {\n const contextLView = instructionState.lFrame.contextLView = walkUpViews(level, instructionState.lFrame.contextLView);\n return contextLView[CONTEXT];\n}\n\nfunction walkUpViews(nestingLevel, currentView) {\n while (nestingLevel > 0) {\n ngDevMode && assertDefined(currentView[DECLARATION_VIEW], 'Declaration view should be defined if nesting level is greater than 0.');\n currentView = currentView[DECLARATION_VIEW];\n nestingLevel--;\n }\n\n return currentView;\n}\n/**\n * Gets the currently selected element index.\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n */\n\n\nfunction getSelectedIndex() {\n return instructionState.lFrame.selectedIndex;\n}\n/**\n * Sets the most recent index passed to {@link select}\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n *\n * (Note that if an \"exit function\" was set earlier (via `setElementExitFn()`) then that will be\n * run if and when the provided `index` value is different from the current selected index value.)\n */\n\n\nfunction setSelectedIndex(index) {\n ngDevMode && index !== -1 && assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Index must be past HEADER_OFFSET (or -1).');\n ngDevMode && assertLessThan(index, instructionState.lFrame.lView.length, 'Can\\'t set index passed end of LView');\n instructionState.lFrame.selectedIndex = index;\n}\n/**\n * Gets the `tNode` that represents currently selected element.\n */\n\n\nfunction getSelectedTNode() {\n const lFrame = instructionState.lFrame;\n return getTNode(lFrame.tView, lFrame.selectedIndex);\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/2000/svg'` in global state.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceSVG() {\n instructionState.lFrame.currentNamespace = SVG_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/1998/MathML/'` in global state.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceMathML() {\n instructionState.lFrame.currentNamespace = MATH_ML_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceHTML() {\n namespaceHTMLInternal();\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n */\n\n\nfunction namespaceHTMLInternal() {\n instructionState.lFrame.currentNamespace = null;\n}\n\nfunction getNamespace$1() {\n return instructionState.lFrame.currentNamespace;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Adds all directive lifecycle hooks from the given `DirectiveDef` to the given `TView`.\n *\n * Must be run *only* on the first template pass.\n *\n * Sets up the pre-order hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * @param directiveIndex The index of the directive in LView\n * @param directiveDef The definition containing the hooks to setup in tView\n * @param tView The current TView\n */\n\n\nfunction registerPreOrderHooks(directiveIndex, directiveDef, tView) {\n ngDevMode && assertFirstCreatePass(tView);\n const {\n ngOnChanges,\n ngOnInit,\n ngDoCheck\n } = directiveDef.type.prototype;\n\n if (ngOnChanges) {\n const wrappedOnChanges = NgOnChangesFeatureImpl(directiveDef);\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, wrappedOnChanges);\n (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = [])).push(directiveIndex, wrappedOnChanges);\n }\n\n if (ngOnInit) {\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(0 - directiveIndex, ngOnInit);\n }\n\n if (ngDoCheck) {\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, ngDoCheck);\n (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = [])).push(directiveIndex, ngDoCheck);\n }\n}\n/**\n *\n * Loops through the directives on the provided `tNode` and queues hooks to be\n * run that are not initialization hooks.\n *\n * Should be executed during `elementEnd()` and similar to\n * preserve hook execution order. Content, view, and destroy hooks for projected\n * components and directives must be called *before* their hosts.\n *\n * Sets up the content, view, and destroy hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * NOTE: This does not set up `onChanges`, `onInit` or `doCheck`, those are set up\n * separately at `elementStart`.\n *\n * @param tView The current TView\n * @param tNode The TNode whose directives are to be searched for hooks to queue\n */\n\n\nfunction registerPostOrderHooks(tView, tNode) {\n ngDevMode && assertFirstCreatePass(tView); // It's necessary to loop through the directives at elementEnd() (rather than processing in\n // directiveCreate) so we can preserve the current hook order. Content, view, and destroy\n // hooks for projected components and directives must be called *before* their hosts.\n\n for (let i = tNode.directiveStart, end = tNode.directiveEnd; i < end; i++) {\n const directiveDef = tView.data[i];\n ngDevMode && assertDefined(directiveDef, 'Expecting DirectiveDef');\n const lifecycleHooks = directiveDef.type.prototype;\n const {\n ngAfterContentInit,\n ngAfterContentChecked,\n ngAfterViewInit,\n ngAfterViewChecked,\n ngOnDestroy\n } = lifecycleHooks;\n\n if (ngAfterContentInit) {\n (tView.contentHooks || (tView.contentHooks = [])).push(-i, ngAfterContentInit);\n }\n\n if (ngAfterContentChecked) {\n (tView.contentHooks || (tView.contentHooks = [])).push(i, ngAfterContentChecked);\n (tView.contentCheckHooks || (tView.contentCheckHooks = [])).push(i, ngAfterContentChecked);\n }\n\n if (ngAfterViewInit) {\n (tView.viewHooks || (tView.viewHooks = [])).push(-i, ngAfterViewInit);\n }\n\n if (ngAfterViewChecked) {\n (tView.viewHooks || (tView.viewHooks = [])).push(i, ngAfterViewChecked);\n (tView.viewCheckHooks || (tView.viewCheckHooks = [])).push(i, ngAfterViewChecked);\n }\n\n if (ngOnDestroy != null) {\n (tView.destroyHooks || (tView.destroyHooks = [])).push(i, ngOnDestroy);\n }\n }\n}\n/**\n * Executing hooks requires complex logic as we need to deal with 2 constraints.\n *\n * 1. Init hooks (ngOnInit, ngAfterContentInit, ngAfterViewInit) must all be executed once and only\n * once, across many change detection cycles. This must be true even if some hooks throw, or if\n * some recursively trigger a change detection cycle.\n * To solve that, it is required to track the state of the execution of these init hooks.\n * This is done by storing and maintaining flags in the view: the {@link InitPhaseState},\n * and the index within that phase. They can be seen as a cursor in the following structure:\n * [[onInit1, onInit2], [afterContentInit1], [afterViewInit1, afterViewInit2, afterViewInit3]]\n * They are are stored as flags in LView[FLAGS].\n *\n * 2. Pre-order hooks can be executed in batches, because of the select instruction.\n * To be able to pause and resume their execution, we also need some state about the hook's array\n * that is being processed:\n * - the index of the next hook to be executed\n * - the number of init hooks already found in the processed part of the array\n * They are are stored as flags in LView[PREORDER_HOOK_FLAGS].\n */\n\n/**\n * Executes pre-order check hooks ( OnChanges, DoChanges) given a view where all the init hooks were\n * executed once. This is a light version of executeInitAndCheckPreOrderHooks where we can skip read\n * / write of the init-hooks related flags.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction executeCheckHooks(lView, hooks, nodeIndex) {\n callHooks(lView, hooks, 3\n /* InitPhaseState.InitPhaseCompleted */\n , nodeIndex);\n}\n/**\n * Executes post-order init and check hooks (one of AfterContentInit, AfterContentChecked,\n * AfterViewInit, AfterViewChecked) given a view where there are pending init hooks to be executed.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param initPhase A phase for which hooks should be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction executeInitAndCheckHooks(lView, hooks, initPhase, nodeIndex) {\n ngDevMode && assertNotEqual(initPhase, 3\n /* InitPhaseState.InitPhaseCompleted */\n , 'Init pre-order hooks should not be called more than once');\n\n if ((lView[FLAGS] & 3\n /* LViewFlags.InitPhaseStateMask */\n ) === initPhase) {\n callHooks(lView, hooks, initPhase, nodeIndex);\n }\n}\n\nfunction incrementInitPhaseFlags(lView, initPhase) {\n ngDevMode && assertNotEqual(initPhase, 3\n /* InitPhaseState.InitPhaseCompleted */\n , 'Init hooks phase should not be incremented after all init hooks have been run.');\n let flags = lView[FLAGS];\n\n if ((flags & 3\n /* LViewFlags.InitPhaseStateMask */\n ) === initPhase) {\n flags &= 2047\n /* LViewFlags.IndexWithinInitPhaseReset */\n ;\n flags += 1\n /* LViewFlags.InitPhaseStateIncrementer */\n ;\n lView[FLAGS] = flags;\n }\n}\n/**\n * Calls lifecycle hooks with their contexts, skipping init hooks if it's not\n * the first LView pass\n *\n * @param currentView The current view\n * @param arr The array in which the hooks are found\n * @param initPhaseState the current state of the init phase\n * @param currentNodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction callHooks(currentView, arr, initPhase, currentNodeIndex) {\n ngDevMode && assertEqual(isInCheckNoChangesMode(), false, 'Hooks should never be run when in check no changes mode.');\n const startIndex = currentNodeIndex !== undefined ? currentView[PREORDER_HOOK_FLAGS] & 65535\n /* PreOrderHookFlags.IndexOfTheNextPreOrderHookMaskMask */\n : 0;\n const nodeIndexLimit = currentNodeIndex != null ? currentNodeIndex : -1;\n const max = arr.length - 1; // Stop the loop at length - 1, because we look for the hook at i + 1\n\n let lastNodeIndexFound = 0;\n\n for (let i = startIndex; i < max; i++) {\n const hook = arr[i + 1];\n\n if (typeof hook === 'number') {\n lastNodeIndexFound = arr[i];\n\n if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {\n break;\n }\n } else {\n const isInitHook = arr[i] < 0;\n if (isInitHook) currentView[PREORDER_HOOK_FLAGS] += 65536\n /* PreOrderHookFlags.NumberOfInitHooksCalledIncrementer */\n ;\n\n if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {\n callHook(currentView, initPhase, arr, i);\n currentView[PREORDER_HOOK_FLAGS] = (currentView[PREORDER_HOOK_FLAGS] & 4294901760\n /* PreOrderHookFlags.NumberOfInitHooksCalledMask */\n ) + i + 2;\n }\n\n i++;\n }\n }\n}\n/**\n * Execute one hook against the current `LView`.\n *\n * @param currentView The current view\n * @param initPhaseState the current state of the init phase\n * @param arr The array in which the hooks are found\n * @param i The current index within the hook data array\n */\n\n\nfunction callHook(currentView, initPhase, arr, i) {\n const isInitHook = arr[i] < 0;\n const hook = arr[i + 1];\n const directiveIndex = isInitHook ? -arr[i] : arr[i];\n const directive = currentView[directiveIndex];\n\n if (isInitHook) {\n const indexWithintInitPhase = currentView[FLAGS] >> 11\n /* LViewFlags.IndexWithinInitPhaseShift */\n ; // The init phase state must be always checked here as it may have been recursively updated.\n\n if (indexWithintInitPhase < currentView[PREORDER_HOOK_FLAGS] >> 16\n /* PreOrderHookFlags.NumberOfInitHooksCalledShift */\n && (currentView[FLAGS] & 3\n /* LViewFlags.InitPhaseStateMask */\n ) === initPhase) {\n currentView[FLAGS] += 2048\n /* LViewFlags.IndexWithinInitPhaseIncrementer */\n ;\n profiler(4\n /* ProfilerEvent.LifecycleHookStart */\n , directive, hook);\n\n try {\n hook.call(directive);\n } finally {\n profiler(5\n /* ProfilerEvent.LifecycleHookEnd */\n , directive, hook);\n }\n }\n } else {\n profiler(4\n /* ProfilerEvent.LifecycleHookStart */\n , directive, hook);\n\n try {\n hook.call(directive);\n } finally {\n profiler(5\n /* ProfilerEvent.LifecycleHookEnd */\n , directive, hook);\n }\n }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nconst NO_PARENT_INJECTOR = -1;\n/**\n * Each injector is saved in 9 contiguous slots in `LView` and 9 contiguous slots in\n * `TView.data`. This allows us to store information about the current node's tokens (which\n * can be shared in `TView`) as well as the tokens of its ancestor nodes (which cannot be\n * shared, so they live in `LView`).\n *\n * Each of these slots (aside from the last slot) contains a bloom filter. This bloom filter\n * determines whether a directive is available on the associated node or not. This prevents us\n * from searching the directives array at this level unless it's probable the directive is in it.\n *\n * See: https://en.wikipedia.org/wiki/Bloom_filter for more about bloom filters.\n *\n * Because all injectors have been flattened into `LView` and `TViewData`, they cannot typed\n * using interfaces as they were previously. The start index of each `LInjector` and `TInjector`\n * will differ based on where it is flattened into the main array, so it's not possible to know\n * the indices ahead of time and save their types here. The interfaces are still included here\n * for documentation purposes.\n *\n * export interface LInjector extends Array {\n *\n * // Cumulative bloom for directive IDs 0-31 (IDs are % BLOOM_SIZE)\n * [0]: number;\n *\n * // Cumulative bloom for directive IDs 32-63\n * [1]: number;\n *\n * // Cumulative bloom for directive IDs 64-95\n * [2]: number;\n *\n * // Cumulative bloom for directive IDs 96-127\n * [3]: number;\n *\n * // Cumulative bloom for directive IDs 128-159\n * [4]: number;\n *\n * // Cumulative bloom for directive IDs 160 - 191\n * [5]: number;\n *\n * // Cumulative bloom for directive IDs 192 - 223\n * [6]: number;\n *\n * // Cumulative bloom for directive IDs 224 - 255\n * [7]: number;\n *\n * // We need to store a reference to the injector's parent so DI can keep looking up\n * // the injector tree until it finds the dependency it's looking for.\n * [PARENT_INJECTOR]: number;\n * }\n *\n * export interface TInjector extends Array {\n *\n * // Shared node bloom for directive IDs 0-31 (IDs are % BLOOM_SIZE)\n * [0]: number;\n *\n * // Shared node bloom for directive IDs 32-63\n * [1]: number;\n *\n * // Shared node bloom for directive IDs 64-95\n * [2]: number;\n *\n * // Shared node bloom for directive IDs 96-127\n * [3]: number;\n *\n * // Shared node bloom for directive IDs 128-159\n * [4]: number;\n *\n * // Shared node bloom for directive IDs 160 - 191\n * [5]: number;\n *\n * // Shared node bloom for directive IDs 192 - 223\n * [6]: number;\n *\n * // Shared node bloom for directive IDs 224 - 255\n * [7]: number;\n *\n * // Necessary to find directive indices for a particular node.\n * [TNODE]: TElementNode|TElementContainerNode|TContainerNode;\n * }\n */\n\n/**\n * Factory for creating instances of injectors in the NodeInjector.\n *\n * This factory is complicated by the fact that it can resolve `multi` factories as well.\n *\n * NOTE: Some of the fields are optional which means that this class has two hidden classes.\n * - One without `multi` support (most common)\n * - One with `multi` values, (rare).\n *\n * Since VMs can cache up to 4 inline hidden classes this is OK.\n *\n * - Single factory: Only `resolving` and `factory` is defined.\n * - `providers` factory: `componentProviders` is a number and `index = -1`.\n * - `viewProviders` factory: `componentProviders` is a number and `index` points to `providers`.\n */\n\nclass NodeInjectorFactory {\n constructor(\n /**\n * Factory to invoke in order to create a new instance.\n */\n factory,\n /**\n * Set to `true` if the token is declared in `viewProviders` (or if it is component).\n */\n isViewProvider, injectImplementation) {\n this.factory = factory;\n /**\n * Marker set to true during factory invocation to see if we get into recursive loop.\n * Recursive loop causes an error to be displayed.\n */\n\n this.resolving = false;\n ngDevMode && assertDefined(factory, 'Factory not specified');\n ngDevMode && assertEqual(typeof factory, 'function', 'Expected factory function.');\n this.canSeeViewProviders = isViewProvider;\n this.injectImpl = injectImplementation;\n }\n\n}\n\nfunction isFactory(obj) {\n return obj instanceof NodeInjectorFactory;\n} // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nconst unusedValueExportToPlacateAjd$6 = 1;\n/**\n * Converts `TNodeType` into human readable text.\n * Make sure this matches with `TNodeType`\n */\n\nfunction toTNodeTypeAsString(tNodeType) {\n let text = '';\n tNodeType & 1\n /* TNodeType.Text */\n && (text += '|Text');\n tNodeType & 2\n /* TNodeType.Element */\n && (text += '|Element');\n tNodeType & 4\n /* TNodeType.Container */\n && (text += '|Container');\n tNodeType & 8\n /* TNodeType.ElementContainer */\n && (text += '|ElementContainer');\n tNodeType & 16\n /* TNodeType.Projection */\n && (text += '|Projection');\n tNodeType & 32\n /* TNodeType.Icu */\n && (text += '|IcuContainer');\n tNodeType & 64\n /* TNodeType.Placeholder */\n && (text += '|Placeholder');\n return text.length > 0 ? text.substring(1) : text;\n} // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nconst unusedValueExportToPlacateAjd$5 = 1;\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `class` binding.\n *\n * ```\n * \n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n * @Input()\n * class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\n\nfunction hasClassInput(tNode) {\n return (tNode.flags & 16\n /* TNodeFlags.hasClassInput */\n ) !== 0;\n}\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `style` binding.\n *\n * ```\n * \n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n * @Input()\n * class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\n\n\nfunction hasStyleInput(tNode) {\n return (tNode.flags & 32\n /* TNodeFlags.hasStyleInput */\n ) !== 0;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction assertTNodeType(tNode, expectedTypes, message) {\n assertDefined(tNode, 'should be called with a TNode');\n\n if ((tNode.type & expectedTypes) === 0) {\n throwError(message || `Expected [${toTNodeTypeAsString(expectedTypes)}] but got ${toTNodeTypeAsString(tNode.type)}.`);\n }\n}\n\nfunction assertPureTNodeType(type) {\n if (!(type === 2\n /* TNodeType.Element */\n || //\n type === 1\n /* TNodeType.Text */\n || //\n type === 4\n /* TNodeType.Container */\n || //\n type === 8\n /* TNodeType.ElementContainer */\n || //\n type === 32\n /* TNodeType.Icu */\n || //\n type === 16\n /* TNodeType.Projection */\n || //\n type === 64\n /* TNodeType.Placeholder */\n )) {\n throwError(`Expected TNodeType to have only a single type selected, but got ${toTNodeTypeAsString(type)}.`);\n }\n}\n/**\n * Assigns all attribute values to the provided element via the inferred renderer.\n *\n * This function accepts two forms of attribute entries:\n *\n * default: (key, value):\n * attrs = [key1, value1, key2, value2]\n *\n * namespaced: (NAMESPACE_MARKER, uri, name, value)\n * attrs = [NAMESPACE_MARKER, uri, name, value, NAMESPACE_MARKER, uri, name, value]\n *\n * The `attrs` array can contain a mix of both the default and namespaced entries.\n * The \"default\" values are set without a marker, but if the function comes across\n * a marker value then it will attempt to set a namespaced value. If the marker is\n * not of a namespaced value then the function will quit and return the index value\n * where it stopped during the iteration of the attrs array.\n *\n * See [AttributeMarker] to understand what the namespace marker value is.\n *\n * Note that this instruction does not support assigning style and class values to\n * an element. See `elementStart` and `elementHostAttrs` to learn how styling values\n * are applied to an element.\n * @param renderer The renderer to be used\n * @param native The element that the attributes will be assigned to\n * @param attrs The attribute array of values that will be assigned to the element\n * @returns the index value that was last accessed in the attributes array\n */\n\n\nfunction setUpAttributes(renderer, native, attrs) {\n let i = 0;\n\n while (i < attrs.length) {\n const value = attrs[i];\n\n if (typeof value === 'number') {\n // only namespaces are supported. Other value types (such as style/class\n // entries) are not supported in this function.\n if (value !== 0\n /* AttributeMarker.NamespaceURI */\n ) {\n break;\n } // we just landed on the marker value ... therefore\n // we should skip to the next entry\n\n\n i++;\n const namespaceURI = attrs[i++];\n const attrName = attrs[i++];\n const attrVal = attrs[i++];\n ngDevMode && ngDevMode.rendererSetAttribute++;\n renderer.setAttribute(native, attrName, attrVal, namespaceURI);\n } else {\n // attrName is string;\n const attrName = value;\n const attrVal = attrs[++i]; // Standard attributes\n\n ngDevMode && ngDevMode.rendererSetAttribute++;\n\n if (isAnimationProp(attrName)) {\n renderer.setProperty(native, attrName, attrVal);\n } else {\n renderer.setAttribute(native, attrName, attrVal);\n }\n\n i++;\n }\n } // another piece of code may iterate over the same attributes array. Therefore\n // it may be helpful to return the exact spot where the attributes array exited\n // whether by running into an unsupported marker or if all the static values were\n // iterated over.\n\n\n return i;\n}\n/**\n * Test whether the given value is a marker that indicates that the following\n * attribute values in a `TAttributes` array are only the names of attributes,\n * and not name-value pairs.\n * @param marker The attribute marker to test.\n * @returns true if the marker is a \"name-only\" marker (e.g. `Bindings`, `Template` or `I18n`).\n */\n\n\nfunction isNameOnlyAttributeMarker(marker) {\n return marker === 3\n /* AttributeMarker.Bindings */\n || marker === 4\n /* AttributeMarker.Template */\n || marker === 6\n /* AttributeMarker.I18n */\n ;\n}\n\nfunction isAnimationProp(name) {\n // Perf note: accessing charCodeAt to check for the first character of a string is faster as\n // compared to accessing a character at index 0 (ex. name[0]). The main reason for this is that\n // charCodeAt doesn't allocate memory to return a substring.\n return name.charCodeAt(0) === 64\n /* CharCode.AT_SIGN */\n ;\n}\n/**\n * Merges `src` `TAttributes` into `dst` `TAttributes` removing any duplicates in the process.\n *\n * This merge function keeps the order of attrs same.\n *\n * @param dst Location of where the merged `TAttributes` should end up.\n * @param src `TAttributes` which should be appended to `dst`\n */\n\n\nfunction mergeHostAttrs(dst, src) {\n if (src === null || src.length === 0) {// do nothing\n } else if (dst === null || dst.length === 0) {\n // We have source, but dst is empty, just make a copy.\n dst = src.slice();\n } else {\n let srcMarker = -1\n /* AttributeMarker.ImplicitAttributes */\n ;\n\n for (let i = 0; i < src.length; i++) {\n const item = src[i];\n\n if (typeof item === 'number') {\n srcMarker = item;\n } else {\n if (srcMarker === 0\n /* AttributeMarker.NamespaceURI */\n ) {// Case where we need to consume `key1`, `key2`, `value` items.\n } else if (srcMarker === -1\n /* AttributeMarker.ImplicitAttributes */\n || srcMarker === 2\n /* AttributeMarker.Styles */\n ) {\n // Case where we have to consume `key1` and `value` only.\n mergeHostAttribute(dst, srcMarker, item, null, src[++i]);\n } else {\n // Case where we have to consume `key1` only.\n mergeHostAttribute(dst, srcMarker, item, null, null);\n }\n }\n }\n }\n\n return dst;\n}\n/**\n * Append `key`/`value` to existing `TAttributes` taking region marker and duplicates into account.\n *\n * @param dst `TAttributes` to append to.\n * @param marker Region where the `key`/`value` should be added.\n * @param key1 Key to add to `TAttributes`\n * @param key2 Key to add to `TAttributes` (in case of `AttributeMarker.NamespaceURI`)\n * @param value Value to add or to overwrite to `TAttributes` Only used if `marker` is not Class.\n */\n\n\nfunction mergeHostAttribute(dst, marker, key1, key2, value) {\n let i = 0; // Assume that new markers will be inserted at the end.\n\n let markerInsertPosition = dst.length; // scan until correct type.\n\n if (marker === -1\n /* AttributeMarker.ImplicitAttributes */\n ) {\n markerInsertPosition = -1;\n } else {\n while (i < dst.length) {\n const dstValue = dst[i++];\n\n if (typeof dstValue === 'number') {\n if (dstValue === marker) {\n markerInsertPosition = -1;\n break;\n } else if (dstValue > marker) {\n // We need to save this as we want the markers to be inserted in specific order.\n markerInsertPosition = i - 1;\n break;\n }\n }\n }\n } // search until you find place of insertion\n\n\n while (i < dst.length) {\n const item = dst[i];\n\n if (typeof item === 'number') {\n // since `i` started as the index after the marker, we did not find it if we are at the next\n // marker\n break;\n } else if (item === key1) {\n // We already have same token\n if (key2 === null) {\n if (value !== null) {\n dst[i + 1] = value;\n }\n\n return;\n } else if (key2 === dst[i + 1]) {\n dst[i + 2] = value;\n return;\n }\n } // Increment counter.\n\n\n i++;\n if (key2 !== null) i++;\n if (value !== null) i++;\n } // insert at location.\n\n\n if (markerInsertPosition !== -1) {\n dst.splice(markerInsertPosition, 0, marker);\n i = markerInsertPosition + 1;\n }\n\n dst.splice(i++, 0, key1);\n\n if (key2 !== null) {\n dst.splice(i++, 0, key2);\n }\n\n if (value !== null) {\n dst.splice(i++, 0, value);\n }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/// Parent Injector Utils ///////////////////////////////////////////////////////////////\n\n\nfunction hasParentInjector(parentLocation) {\n return parentLocation !== NO_PARENT_INJECTOR;\n}\n\nfunction getParentInjectorIndex(parentLocation) {\n ngDevMode && assertNumber(parentLocation, 'Number expected');\n ngDevMode && assertNotEqual(parentLocation, -1, 'Not a valid state.');\n const parentInjectorIndex = parentLocation & 32767\n /* RelativeInjectorLocationFlags.InjectorIndexMask */\n ;\n ngDevMode && assertGreaterThan(parentInjectorIndex, HEADER_OFFSET, 'Parent injector must be pointing past HEADER_OFFSET.');\n return parentLocation & 32767\n /* RelativeInjectorLocationFlags.InjectorIndexMask */\n ;\n}\n\nfunction getParentInjectorViewOffset(parentLocation) {\n return parentLocation >> 16\n /* RelativeInjectorLocationFlags.ViewOffsetShift */\n ;\n}\n/**\n * Unwraps a parent injector location number to find the view offset from the current injector,\n * then walks up the declaration view tree until the view is found that contains the parent\n * injector.\n *\n * @param location The location of the parent injector, which contains the view offset\n * @param startView The LView instance from which to start walking up the view tree\n * @returns The LView instance that contains the parent injector\n */\n\n\nfunction getParentInjectorView(location, startView) {\n let viewOffset = getParentInjectorViewOffset(location);\n let parentView = startView; // For most cases, the parent injector can be found on the host node (e.g. for component\n // or container), but we must keep the loop here to support the rarer case of deeply nested\n // tags or inline views, where the parent injector might live many views\n // above the child injector.\n\n while (viewOffset > 0) {\n parentView = parentView[DECLARATION_VIEW];\n viewOffset--;\n }\n\n return parentView;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines if the call to `inject` should include `viewProviders` in its resolution.\n *\n * This is set to true when we try to instantiate a component. This value is reset in\n * `getNodeInjectable` to a value which matches the declaration location of the token about to be\n * instantiated. This is done so that if we are injecting a token which was declared outside of\n * `viewProviders` we don't accidentally pull `viewProviders` in.\n *\n * Example:\n *\n * ```\n * @Injectable()\n * class MyService {\n * constructor(public value: String) {}\n * }\n *\n * @Component({\n * providers: [\n * MyService,\n * {provide: String, value: 'providers' }\n * ]\n * viewProviders: [\n * {provide: String, value: 'viewProviders'}\n * ]\n * })\n * class MyComponent {\n * constructor(myService: MyService, value: String) {\n * // We expect that Component can see into `viewProviders`.\n * expect(value).toEqual('viewProviders');\n * // `MyService` was not declared in `viewProviders` hence it can't see it.\n * expect(myService.value).toEqual('providers');\n * }\n * }\n *\n * ```\n */\n\n\nlet includeViewProviders = true;\n\nfunction setIncludeViewProviders(v) {\n const oldValue = includeViewProviders;\n includeViewProviders = v;\n return oldValue;\n}\n/**\n * The number of slots in each bloom filter (used by DI). The larger this number, the fewer\n * directives that will share slots, and thus, the fewer false positives when checking for\n * the existence of a directive.\n */\n\n\nconst BLOOM_SIZE = 256;\nconst BLOOM_MASK = BLOOM_SIZE - 1;\n/**\n * The number of bits that is represented by a single bloom bucket. JS bit operations are 32 bits,\n * so each bucket represents 32 distinct tokens which accounts for log2(32) = 5 bits of a bloom hash\n * number.\n */\n\nconst BLOOM_BUCKET_BITS = 5;\n/** Counter used to generate unique IDs for directives. */\n\nlet nextNgElementId = 0;\n/** Value used when something wasn't found by an injector. */\n\nconst NOT_FOUND = {};\n/**\n * Registers this directive as present in its node's injector by flipping the directive's\n * corresponding bit in the injector's bloom filter.\n *\n * @param injectorIndex The index of the node injector where this token should be registered\n * @param tView The TView for the injector's bloom filters\n * @param type The directive token to register\n */\n\nfunction bloomAdd(injectorIndex, tView, type) {\n ngDevMode && assertEqual(tView.firstCreatePass, true, 'expected firstCreatePass to be true');\n let id;\n\n if (typeof type === 'string') {\n id = type.charCodeAt(0) || 0;\n } else if (type.hasOwnProperty(NG_ELEMENT_ID)) {\n id = type[NG_ELEMENT_ID];\n } // Set a unique ID on the directive type, so if something tries to inject the directive,\n // we can easily retrieve the ID and hash it into the bloom bit that should be checked.\n\n\n if (id == null) {\n id = type[NG_ELEMENT_ID] = nextNgElementId++;\n } // We only have BLOOM_SIZE (256) slots in our bloom filter (8 buckets * 32 bits each),\n // so all unique IDs must be modulo-ed into a number from 0 - 255 to fit into the filter.\n\n\n const bloomHash = id & BLOOM_MASK; // Create a mask that targets the specific bit associated with the directive.\n // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n // to bit positions 0 - 31 in a 32 bit integer.\n\n const mask = 1 << bloomHash; // Each bloom bucket in `tData` represents `BLOOM_BUCKET_BITS` number of bits of `bloomHash`.\n // Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset that the mask\n // should be written to.\n\n tView.data[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)] |= mask;\n}\n/**\n * Creates (or gets an existing) injector for a given element or container.\n *\n * @param tNode for which an injector should be retrieved / created.\n * @param lView View where the node is stored\n * @returns Node injector\n */\n\n\nfunction getOrCreateNodeInjectorForNode(tNode, lView) {\n const existingInjectorIndex = getInjectorIndex(tNode, lView);\n\n if (existingInjectorIndex !== -1) {\n return existingInjectorIndex;\n }\n\n const tView = lView[TVIEW];\n\n if (tView.firstCreatePass) {\n tNode.injectorIndex = lView.length;\n insertBloom(tView.data, tNode); // foundation for node bloom\n\n insertBloom(lView, null); // foundation for cumulative bloom\n\n insertBloom(tView.blueprint, null);\n }\n\n const parentLoc = getParentInjectorLocation(tNode, lView);\n const injectorIndex = tNode.injectorIndex; // If a parent injector can't be found, its location is set to -1.\n // In that case, we don't need to set up a cumulative bloom\n\n if (hasParentInjector(parentLoc)) {\n const parentIndex = getParentInjectorIndex(parentLoc);\n const parentLView = getParentInjectorView(parentLoc, lView);\n const parentData = parentLView[TVIEW].data; // Creates a cumulative bloom filter that merges the parent's bloom filter\n // and its own cumulative bloom (which contains tokens for all ancestors)\n\n for (let i = 0; i < 8\n /* NodeInjectorOffset.BLOOM_SIZE */\n ; i++) {\n lView[injectorIndex + i] = parentLView[parentIndex + i] | parentData[parentIndex + i];\n }\n }\n\n lView[injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n ] = parentLoc;\n return injectorIndex;\n}\n\nfunction insertBloom(arr, footer) {\n arr.push(0, 0, 0, 0, 0, 0, 0, 0, footer);\n}\n\nfunction getInjectorIndex(tNode, lView) {\n if (tNode.injectorIndex === -1 || // If the injector index is the same as its parent's injector index, then the index has been\n // copied down from the parent node. No injector has been created yet on this node.\n tNode.parent && tNode.parent.injectorIndex === tNode.injectorIndex || // After the first template pass, the injector index might exist but the parent values\n // might not have been calculated yet for this instance\n lView[tNode.injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n ] === null) {\n return -1;\n } else {\n ngDevMode && assertIndexInRange(lView, tNode.injectorIndex);\n return tNode.injectorIndex;\n }\n}\n/**\n * Finds the index of the parent injector, with a view offset if applicable. Used to set the\n * parent injector initially.\n *\n * @returns Returns a number that is the combination of the number of LViews that we have to go up\n * to find the LView containing the parent inject AND the index of the injector within that LView.\n */\n\n\nfunction getParentInjectorLocation(tNode, lView) {\n if (tNode.parent && tNode.parent.injectorIndex !== -1) {\n // If we have a parent `TNode` and there is an injector associated with it we are done, because\n // the parent injector is within the current `LView`.\n return tNode.parent.injectorIndex; // ViewOffset is 0\n } // When parent injector location is computed it may be outside of the current view. (ie it could\n // be pointing to a declared parent location). This variable stores number of declaration parents\n // we need to walk up in order to find the parent injector location.\n\n\n let declarationViewOffset = 0;\n let parentTNode = null;\n let lViewCursor = lView; // The parent injector is not in the current `LView`. We will have to walk the declared parent\n // `LView` hierarchy and look for it. If we walk of the top, that means that there is no parent\n // `NodeInjector`.\n\n while (lViewCursor !== null) {\n parentTNode = getTNodeFromLView(lViewCursor);\n\n if (parentTNode === null) {\n // If we have no parent, than we are done.\n return NO_PARENT_INJECTOR;\n }\n\n ngDevMode && parentTNode && assertTNodeForLView(parentTNode, lViewCursor[DECLARATION_VIEW]); // Every iteration of the loop requires that we go to the declared parent.\n\n declarationViewOffset++;\n lViewCursor = lViewCursor[DECLARATION_VIEW];\n\n if (parentTNode.injectorIndex !== -1) {\n // We found a NodeInjector which points to something.\n return parentTNode.injectorIndex | declarationViewOffset << 16\n /* RelativeInjectorLocationFlags.ViewOffsetShift */\n ;\n }\n }\n\n return NO_PARENT_INJECTOR;\n}\n/**\n * Makes a type or an injection token public to the DI system by adding it to an\n * injector's bloom filter.\n *\n * @param di The node injector in which a directive will be added\n * @param token The type or the injection token to be made public\n */\n\n\nfunction diPublicInInjector(injectorIndex, tView, token) {\n bloomAdd(injectorIndex, tView, token);\n}\n/**\n * Inject static attribute value into directive constructor.\n *\n * This method is used with `factory` functions which are generated as part of\n * `defineDirective` or `defineComponent`. The method retrieves the static value\n * of an attribute. (Dynamic attributes are not supported since they are not resolved\n * at the time of injection and can change over time.)\n *\n * # Example\n * Given:\n * ```\n * @Component(...)\n * class MyComponent {\n * constructor(@Attribute('title') title: string) { ... }\n * }\n * ```\n * When instantiated with\n * ```\n * \n * ```\n *\n * Then factory method generated is:\n * ```\n * MyComponent.ɵcmp = defineComponent({\n * factory: () => new MyComponent(injectAttribute('title'))\n * ...\n * })\n * ```\n *\n * @publicApi\n */\n\n\nfunction injectAttributeImpl(tNode, attrNameToInject) {\n ngDevMode && assertTNodeType(tNode, 12\n /* TNodeType.AnyContainer */\n | 3\n /* TNodeType.AnyRNode */\n );\n ngDevMode && assertDefined(tNode, 'expecting tNode');\n\n if (attrNameToInject === 'class') {\n return tNode.classes;\n }\n\n if (attrNameToInject === 'style') {\n return tNode.styles;\n }\n\n const attrs = tNode.attrs;\n\n if (attrs) {\n const attrsLength = attrs.length;\n let i = 0;\n\n while (i < attrsLength) {\n const value = attrs[i]; // If we hit a `Bindings` or `Template` marker then we are done.\n\n if (isNameOnlyAttributeMarker(value)) break; // Skip namespaced attributes\n\n if (value === 0\n /* AttributeMarker.NamespaceURI */\n ) {\n // we skip the next two values\n // as namespaced attributes looks like\n // [..., AttributeMarker.NamespaceURI, 'http://someuri.com/test', 'test:exist',\n // 'existValue', ...]\n i = i + 2;\n } else if (typeof value === 'number') {\n // Skip to the first value of the marked attribute.\n i++;\n\n while (i < attrsLength && typeof attrs[i] === 'string') {\n i++;\n }\n } else if (value === attrNameToInject) {\n return attrs[i + 1];\n } else {\n i = i + 2;\n }\n }\n }\n\n return null;\n}\n\nfunction notFoundValueOrThrow(notFoundValue, token, flags) {\n if (flags & InjectFlags.Optional) {\n return notFoundValue;\n } else {\n throwProviderNotFoundError(token, 'NodeInjector');\n }\n}\n/**\n * Returns the value associated to the given token from the ModuleInjector or throws exception\n *\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector or throws an exception\n */\n\n\nfunction lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue) {\n if (flags & InjectFlags.Optional && notFoundValue === undefined) {\n // This must be set or the NullInjector will throw for optional deps\n notFoundValue = null;\n }\n\n if ((flags & (InjectFlags.Self | InjectFlags.Host)) === 0) {\n const moduleInjector = lView[INJECTOR$1]; // switch to `injectInjectorOnly` implementation for module injector, since module injector\n // should not have access to Component/Directive DI scope (that may happen through\n // `directiveInject` implementation)\n\n const previousInjectImplementation = setInjectImplementation(undefined);\n\n try {\n if (moduleInjector) {\n return moduleInjector.get(token, notFoundValue, flags & InjectFlags.Optional);\n } else {\n return injectRootLimpMode(token, notFoundValue, flags & InjectFlags.Optional);\n }\n } finally {\n setInjectImplementation(previousInjectImplementation);\n }\n }\n\n return notFoundValueOrThrow(notFoundValue, token, flags);\n}\n/**\n * Returns the value associated to the given token from the NodeInjectors => ModuleInjector.\n *\n * Look for the injector providing the token by walking up the node injector tree and then\n * the module injector tree.\n *\n * This function patches `token` with `__NG_ELEMENT_ID__` which contains the id for the bloom\n * filter. `-1` is reserved for injecting `Injector` (implemented by `NodeInjector`)\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\n\n\nfunction getOrCreateInjectable(tNode, lView, token, flags = InjectFlags.Default, notFoundValue) {\n if (tNode !== null) {\n // If the view or any of its ancestors have an embedded\n // view injector, we have to look it up there first.\n if (lView[FLAGS] & 1024\n /* LViewFlags.HasEmbeddedViewInjector */\n ) {\n const embeddedInjectorValue = lookupTokenUsingEmbeddedInjector(tNode, lView, token, flags, NOT_FOUND);\n\n if (embeddedInjectorValue !== NOT_FOUND) {\n return embeddedInjectorValue;\n }\n } // Otherwise try the node injector.\n\n\n const value = lookupTokenUsingNodeInjector(tNode, lView, token, flags, NOT_FOUND);\n\n if (value !== NOT_FOUND) {\n return value;\n }\n } // Finally, fall back to the module injector.\n\n\n return lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n}\n/**\n * Returns the value associated to the given token from the node injector.\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\n\n\nfunction lookupTokenUsingNodeInjector(tNode, lView, token, flags, notFoundValue) {\n const bloomHash = bloomHashBitOrFactory(token); // If the ID stored here is a function, this is a special object like ElementRef or TemplateRef\n // so just call the factory function to create it.\n\n if (typeof bloomHash === 'function') {\n if (!enterDI(lView, tNode, flags)) {\n // Failed to enter DI, try module injector instead. If a token is injected with the @Host\n // flag, the module injector is not searched for that token in Ivy.\n return flags & InjectFlags.Host ? notFoundValueOrThrow(notFoundValue, token, flags) : lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n }\n\n try {\n const value = bloomHash(flags);\n\n if (value == null && !(flags & InjectFlags.Optional)) {\n throwProviderNotFoundError(token);\n } else {\n return value;\n }\n } finally {\n leaveDI();\n }\n } else if (typeof bloomHash === 'number') {\n // A reference to the previous injector TView that was found while climbing the element\n // injector tree. This is used to know if viewProviders can be accessed on the current\n // injector.\n let previousTView = null;\n let injectorIndex = getInjectorIndex(tNode, lView);\n let parentLocation = NO_PARENT_INJECTOR;\n let hostTElementNode = flags & InjectFlags.Host ? lView[DECLARATION_COMPONENT_VIEW][T_HOST] : null; // If we should skip this injector, or if there is no injector on this node, start by\n // searching the parent injector.\n\n if (injectorIndex === -1 || flags & InjectFlags.SkipSelf) {\n parentLocation = injectorIndex === -1 ? getParentInjectorLocation(tNode, lView) : lView[injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n ];\n\n if (parentLocation === NO_PARENT_INJECTOR || !shouldSearchParent(flags, false)) {\n injectorIndex = -1;\n } else {\n previousTView = lView[TVIEW];\n injectorIndex = getParentInjectorIndex(parentLocation);\n lView = getParentInjectorView(parentLocation, lView);\n }\n } // Traverse up the injector tree until we find a potential match or until we know there\n // *isn't* a match.\n\n\n while (injectorIndex !== -1) {\n ngDevMode && assertNodeInjector(lView, injectorIndex); // Check the current injector. If it matches, see if it contains token.\n\n const tView = lView[TVIEW];\n ngDevMode && assertTNodeForLView(tView.data[injectorIndex + 8\n /* NodeInjectorOffset.TNODE */\n ], lView);\n\n if (bloomHasToken(bloomHash, injectorIndex, tView.data)) {\n // At this point, we have an injector which *may* contain the token, so we step through\n // the providers and directives associated with the injector's corresponding node to get\n // the instance.\n const instance = searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode);\n\n if (instance !== NOT_FOUND) {\n return instance;\n }\n }\n\n parentLocation = lView[injectorIndex + 8\n /* NodeInjectorOffset.PARENT */\n ];\n\n if (parentLocation !== NO_PARENT_INJECTOR && shouldSearchParent(flags, lView[TVIEW].data[injectorIndex + 8\n /* NodeInjectorOffset.TNODE */\n ] === hostTElementNode) && bloomHasToken(bloomHash, injectorIndex, lView)) {\n // The def wasn't found anywhere on this node, so it was a false positive.\n // Traverse up the tree and continue searching.\n previousTView = tView;\n injectorIndex = getParentInjectorIndex(parentLocation);\n lView = getParentInjectorView(parentLocation, lView);\n } else {\n // If we should not search parent OR If the ancestor bloom filter value does not have the\n // bit corresponding to the directive we can give up on traversing up to find the specific\n // injector.\n injectorIndex = -1;\n }\n }\n }\n\n return notFoundValue;\n}\n\nfunction searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode) {\n const currentTView = lView[TVIEW];\n const tNode = currentTView.data[injectorIndex + 8\n /* NodeInjectorOffset.TNODE */\n ]; // First, we need to determine if view providers can be accessed by the starting element.\n // There are two possibilities\n\n const canAccessViewProviders = previousTView == null ? // 1) This is the first invocation `previousTView == null` which means that we are at the\n // `TNode` of where injector is starting to look. In such a case the only time we are allowed\n // to look into the ViewProviders is if:\n // - we are on a component\n // - AND the injector set `includeViewProviders` to true (implying that the token can see\n // ViewProviders because it is the Component or a Service which itself was declared in\n // ViewProviders)\n isComponentHost(tNode) && includeViewProviders : // 2) `previousTView != null` which means that we are now walking across the parent nodes.\n // In such a case we are only allowed to look into the ViewProviders if:\n // - We just crossed from child View to Parent View `previousTView != currentTView`\n // - AND the parent TNode is an Element.\n // This means that we just came from the Component's View and therefore are allowed to see\n // into the ViewProviders.\n previousTView != currentTView && (tNode.type & 3\n /* TNodeType.AnyRNode */\n ) !== 0; // This special case happens when there is a @host on the inject and when we are searching\n // on the host element node.\n\n const isHostSpecialCase = flags & InjectFlags.Host && hostTElementNode === tNode;\n const injectableIdx = locateDirectiveOrProvider(tNode, currentTView, token, canAccessViewProviders, isHostSpecialCase);\n\n if (injectableIdx !== null) {\n return getNodeInjectable(lView, currentTView, injectableIdx, tNode);\n } else {\n return NOT_FOUND;\n }\n}\n/**\n * Searches for the given token among the node's directives and providers.\n *\n * @param tNode TNode on which directives are present.\n * @param tView The tView we are currently processing\n * @param token Provider token or type of a directive to look for.\n * @param canAccessViewProviders Whether view providers should be considered.\n * @param isHostSpecialCase Whether the host special case applies.\n * @returns Index of a found directive or provider, or null when none found.\n */\n\n\nfunction locateDirectiveOrProvider(tNode, tView, token, canAccessViewProviders, isHostSpecialCase) {\n const nodeProviderIndexes = tNode.providerIndexes;\n const tInjectables = tView.data;\n const injectablesStart = nodeProviderIndexes & 1048575\n /* TNodeProviderIndexes.ProvidersStartIndexMask */\n ;\n const directivesStart = tNode.directiveStart;\n const directiveEnd = tNode.directiveEnd;\n const cptViewProvidersCount = nodeProviderIndexes >> 20\n /* TNodeProviderIndexes.CptViewProvidersCountShift */\n ;\n const startingIndex = canAccessViewProviders ? injectablesStart : injectablesStart + cptViewProvidersCount; // When the host special case applies, only the viewProviders and the component are visible\n\n const endIndex = isHostSpecialCase ? injectablesStart + cptViewProvidersCount : directiveEnd;\n\n for (let i = startingIndex; i < endIndex; i++) {\n const providerTokenOrDef = tInjectables[i];\n\n if (i < directivesStart && token === providerTokenOrDef || i >= directivesStart && providerTokenOrDef.type === token) {\n return i;\n }\n }\n\n if (isHostSpecialCase) {\n const dirDef = tInjectables[directivesStart];\n\n if (dirDef && isComponentDef(dirDef) && dirDef.type === token) {\n return directivesStart;\n }\n }\n\n return null;\n}\n/**\n * Retrieve or instantiate the injectable from the `LView` at particular `index`.\n *\n * This function checks to see if the value has already been instantiated and if so returns the\n * cached `injectable`. Otherwise if it detects that the value is still a factory it\n * instantiates the `injectable` and caches the value.\n */\n\n\nfunction getNodeInjectable(lView, tView, index, tNode) {\n let value = lView[index];\n const tData = tView.data;\n\n if (isFactory(value)) {\n const factory = value;\n\n if (factory.resolving) {\n throwCyclicDependencyError(stringifyForError(tData[index]));\n }\n\n const previousIncludeViewProviders = setIncludeViewProviders(factory.canSeeViewProviders);\n factory.resolving = true;\n const previousInjectImplementation = factory.injectImpl ? setInjectImplementation(factory.injectImpl) : null;\n const success = enterDI(lView, tNode, InjectFlags.Default);\n ngDevMode && assertEqual(success, true, 'Because flags do not contain \\`SkipSelf\\' we expect this to always succeed.');\n\n try {\n value = lView[index] = factory.factory(undefined, tData, lView, tNode); // This code path is hit for both directives and providers.\n // For perf reasons, we want to avoid searching for hooks on providers.\n // It does no harm to try (the hooks just won't exist), but the extra\n // checks are unnecessary and this is a hot path. So we check to see\n // if the index of the dependency is in the directive range for this\n // tNode. If it's not, we know it's a provider and skip hook registration.\n\n if (tView.firstCreatePass && index >= tNode.directiveStart) {\n ngDevMode && assertDirectiveDef(tData[index]);\n registerPreOrderHooks(index, tData[index], tView);\n }\n } finally {\n previousInjectImplementation !== null && setInjectImplementation(previousInjectImplementation);\n setIncludeViewProviders(previousIncludeViewProviders);\n factory.resolving = false;\n leaveDI();\n }\n }\n\n return value;\n}\n/**\n * Returns the bit in an injector's bloom filter that should be used to determine whether or not\n * the directive might be provided by the injector.\n *\n * When a directive is public, it is added to the bloom filter and given a unique ID that can be\n * retrieved on the Type. When the directive isn't public or the token is not a directive `null`\n * is returned as the node injector can not possibly provide that token.\n *\n * @param token the injection token\n * @returns the matching bit to check in the bloom filter or `null` if the token is not known.\n * When the returned value is negative then it represents special values such as `Injector`.\n */\n\n\nfunction bloomHashBitOrFactory(token) {\n ngDevMode && assertDefined(token, 'token must be defined');\n\n if (typeof token === 'string') {\n return token.charCodeAt(0) || 0;\n }\n\n const tokenId = // First check with `hasOwnProperty` so we don't get an inherited ID.\n token.hasOwnProperty(NG_ELEMENT_ID) ? token[NG_ELEMENT_ID] : undefined; // Negative token IDs are used for special objects such as `Injector`\n\n if (typeof tokenId === 'number') {\n if (tokenId >= 0) {\n return tokenId & BLOOM_MASK;\n } else {\n ngDevMode && assertEqual(tokenId, -1\n /* InjectorMarkers.Injector */\n , 'Expecting to get Special Injector Id');\n return createNodeInjector;\n }\n } else {\n return tokenId;\n }\n}\n\nfunction bloomHasToken(bloomHash, injectorIndex, injectorView) {\n // Create a mask that targets the specific bit associated with the directive we're looking for.\n // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n // to bit positions 0 - 31 in a 32 bit integer.\n const mask = 1 << bloomHash; // Each bloom bucket in `injectorView` represents `BLOOM_BUCKET_BITS` number of bits of\n // `bloomHash`. Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset\n // that should be used.\n\n const value = injectorView[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)]; // If the bloom filter value has the bit corresponding to the directive's bloomBit flipped on,\n // this injector is a potential match.\n\n return !!(value & mask);\n}\n/** Returns true if flags prevent parent injector from being searched for tokens */\n\n\nfunction shouldSearchParent(flags, isFirstHostTNode) {\n return !(flags & InjectFlags.Self) && !(flags & InjectFlags.Host && isFirstHostTNode);\n}\n\nclass NodeInjector {\n constructor(_tNode, _lView) {\n this._tNode = _tNode;\n this._lView = _lView;\n }\n\n get(token, notFoundValue, flags) {\n return getOrCreateInjectable(this._tNode, this._lView, token, flags, notFoundValue);\n }\n\n}\n/** Creates a `NodeInjector` for the current node. */\n\n\nfunction createNodeInjector() {\n return new NodeInjector(getCurrentTNode(), getLView());\n}\n/**\n * @codeGenApi\n */\n\n\nfunction ɵɵgetInheritedFactory(type) {\n return noSideEffects(() => {\n const ownConstructor = type.prototype.constructor;\n const ownFactory = ownConstructor[NG_FACTORY_DEF] || getFactoryOf(ownConstructor);\n const objectPrototype = Object.prototype;\n let parent = Object.getPrototypeOf(type.prototype).constructor; // Go up the prototype until we hit `Object`.\n\n while (parent && parent !== objectPrototype) {\n const factory = parent[NG_FACTORY_DEF] || getFactoryOf(parent); // If we hit something that has a factory and the factory isn't the same as the type,\n // we've found the inherited factory. Note the check that the factory isn't the type's\n // own factory is redundant in most cases, but if the user has custom decorators on the\n // class, this lookup will start one level down in the prototype chain, causing us to\n // find the own factory first and potentially triggering an infinite loop downstream.\n\n if (factory && factory !== ownFactory) {\n return factory;\n }\n\n parent = Object.getPrototypeOf(parent);\n } // There is no factory defined. Either this was improper usage of inheritance\n // (no Angular decorator on the superclass) or there is no constructor at all\n // in the inheritance chain. Since the two cases cannot be distinguished, the\n // latter has to be assumed.\n\n\n return t => new t();\n });\n}\n\nfunction getFactoryOf(type) {\n if (isForwardRef(type)) {\n return () => {\n const factory = getFactoryOf(resolveForwardRef(type));\n return factory && factory();\n };\n }\n\n return getFactoryDef(type);\n}\n/**\n * Returns a value from the closest embedded or node injector.\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\n\n\nfunction lookupTokenUsingEmbeddedInjector(tNode, lView, token, flags, notFoundValue) {\n let currentTNode = tNode;\n let currentLView = lView; // When an LView with an embedded view injector is inserted, it'll likely be interlaced with\n // nodes who may have injectors (e.g. node injector -> embedded view injector -> node injector).\n // Since the bloom filters for the node injectors have already been constructed and we don't\n // have a way of extracting the records from an injector, the only way to maintain the correct\n // hierarchy when resolving the value is to walk it node-by-node while attempting to resolve\n // the token at each level.\n\n while (currentTNode !== null && currentLView !== null && currentLView[FLAGS] & 1024\n /* LViewFlags.HasEmbeddedViewInjector */\n && !(currentLView[FLAGS] & 256\n /* LViewFlags.IsRoot */\n )) {\n ngDevMode && assertTNodeForLView(currentTNode, currentLView); // Note that this lookup on the node injector is using the `Self` flag, because\n // we don't want the node injector to look at any parent injectors since we\n // may hit the embedded view injector first.\n\n const nodeInjectorValue = lookupTokenUsingNodeInjector(currentTNode, currentLView, token, flags | InjectFlags.Self, NOT_FOUND);\n\n if (nodeInjectorValue !== NOT_FOUND) {\n return nodeInjectorValue;\n } // Has an explicit type due to a TS bug: https://github.com/microsoft/TypeScript/issues/33191\n\n\n let parentTNode = currentTNode.parent; // `TNode.parent` includes the parent within the current view only. If it doesn't exist,\n // it means that we've hit the view boundary and we need to go up to the next view.\n\n if (!parentTNode) {\n // Before we go to the next LView, check if the token exists on the current embedded injector.\n const embeddedViewInjector = currentLView[EMBEDDED_VIEW_INJECTOR];\n\n if (embeddedViewInjector) {\n const embeddedViewInjectorValue = embeddedViewInjector.get(token, NOT_FOUND, flags);\n\n if (embeddedViewInjectorValue !== NOT_FOUND) {\n return embeddedViewInjectorValue;\n }\n } // Otherwise keep going up the tree.\n\n\n parentTNode = getTNodeFromLView(currentLView);\n currentLView = currentLView[DECLARATION_VIEW];\n }\n\n currentTNode = parentTNode;\n }\n\n return notFoundValue;\n}\n/** Gets the TNode associated with an LView inside of the declaration view. */\n\n\nfunction getTNodeFromLView(lView) {\n const tView = lView[TVIEW];\n const tViewType = tView.type; // The parent pointer differs based on `TView.type`.\n\n if (tViewType === 2\n /* TViewType.Embedded */\n ) {\n ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n return tView.declTNode;\n } else if (tViewType === 1\n /* TViewType.Component */\n ) {\n // Components don't have `TView.declTNode` because each instance of component could be\n // inserted in different location, hence `TView.declTNode` is meaningless.\n return lView[T_HOST];\n }\n\n return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Facade for the attribute injection from DI.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinjectAttribute(attrNameToInject) {\n return injectAttributeImpl(getCurrentTNode(), attrNameToInject);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nconst ANNOTATIONS = '__annotations__';\nconst PARAMETERS = '__parameters__';\nconst PROP_METADATA = '__prop__metadata__';\n/**\n * @suppress {globalThis}\n */\n\nfunction makeDecorator(name, props, parentClass, additionalProcessing, typeFn) {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function DecoratorFactory(...args) {\n if (this instanceof DecoratorFactory) {\n metaCtor.call(this, ...args);\n return this;\n }\n\n const annotationInstance = new DecoratorFactory(...args);\n return function TypeDecorator(cls) {\n if (typeFn) typeFn(cls, ...args); // Use of Object.defineProperty is important since it creates non-enumerable property which\n // prevents the property is copied during subclassing.\n\n const annotations = cls.hasOwnProperty(ANNOTATIONS) ? cls[ANNOTATIONS] : Object.defineProperty(cls, ANNOTATIONS, {\n value: []\n })[ANNOTATIONS];\n annotations.push(annotationInstance);\n if (additionalProcessing) additionalProcessing(cls);\n return cls;\n };\n }\n\n if (parentClass) {\n DecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n\n DecoratorFactory.prototype.ngMetadataName = name;\n DecoratorFactory.annotationCls = DecoratorFactory;\n return DecoratorFactory;\n });\n}\n\nfunction makeMetadataCtor(props) {\n return function ctor(...args) {\n if (props) {\n const values = props(...args);\n\n for (const propName in values) {\n this[propName] = values[propName];\n }\n }\n };\n}\n\nfunction makeParamDecorator(name, props, parentClass) {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function ParamDecoratorFactory(...args) {\n if (this instanceof ParamDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n\n const annotationInstance = new ParamDecoratorFactory(...args);\n ParamDecorator.annotation = annotationInstance;\n return ParamDecorator;\n\n function ParamDecorator(cls, unusedKey, index) {\n // Use of Object.defineProperty is important since it creates non-enumerable property which\n // prevents the property is copied during subclassing.\n const parameters = cls.hasOwnProperty(PARAMETERS) ? cls[PARAMETERS] : Object.defineProperty(cls, PARAMETERS, {\n value: []\n })[PARAMETERS]; // there might be gaps if some in between parameters do not have annotations.\n // we pad with nulls.\n\n while (parameters.length <= index) {\n parameters.push(null);\n }\n\n (parameters[index] = parameters[index] || []).push(annotationInstance);\n return cls;\n }\n }\n\n if (parentClass) {\n ParamDecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n\n ParamDecoratorFactory.prototype.ngMetadataName = name;\n ParamDecoratorFactory.annotationCls = ParamDecoratorFactory;\n return ParamDecoratorFactory;\n });\n}\n\nfunction makePropDecorator(name, props, parentClass, additionalProcessing) {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function PropDecoratorFactory(...args) {\n if (this instanceof PropDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n\n const decoratorInstance = new PropDecoratorFactory(...args);\n\n function PropDecorator(target, name) {\n const constructor = target.constructor; // Use of Object.defineProperty is important because it creates a non-enumerable property\n // which prevents the property from being copied during subclassing.\n\n const meta = constructor.hasOwnProperty(PROP_METADATA) ? constructor[PROP_METADATA] : Object.defineProperty(constructor, PROP_METADATA, {\n value: {}\n })[PROP_METADATA];\n meta[name] = meta.hasOwnProperty(name) && meta[name] || [];\n meta[name].unshift(decoratorInstance);\n if (additionalProcessing) additionalProcessing(target, name, ...args);\n }\n\n return PropDecorator;\n }\n\n if (parentClass) {\n PropDecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n\n PropDecoratorFactory.prototype.ngMetadataName = name;\n PropDecoratorFactory.annotationCls = PropDecoratorFactory;\n return PropDecoratorFactory;\n });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Attribute decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nconst Attribute = makeParamDecorator('Attribute', attributeName => ({\n attributeName,\n __NG_ELEMENT_ID__: () => ɵɵinjectAttribute(attributeName)\n}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Creates a token that can be used in a DI Provider.\n *\n * Use an `InjectionToken` whenever the type you are injecting is not reified (does not have a\n * runtime representation) such as when injecting an interface, callable type, array or\n * parameterized type.\n *\n * `InjectionToken` is parameterized on `T` which is the type of object which will be returned by\n * the `Injector`. This provides an additional level of type safety.\n *\n * ```\n * interface MyInterface {...}\n * const myInterface = injector.get(new InjectionToken('SomeToken'));\n * // myInterface is inferred to be MyInterface.\n * ```\n *\n * When creating an `InjectionToken`, you can optionally specify a factory function which returns\n * (possibly by creating) a default value of the parameterized type `T`. This sets up the\n * `InjectionToken` using this factory as a provider as if it was defined explicitly in the\n * application's root injector. If the factory function, which takes zero arguments, needs to inject\n * dependencies, it can do so using the `inject` function.\n * As you can see in the Tree-shakable InjectionToken example below.\n *\n * Additionally, if a `factory` is specified you can also specify the `providedIn` option, which\n * overrides the above behavior and marks the token as belonging to a particular `@NgModule`. As\n * mentioned above, `'root'` is the default value for `providedIn`.\n *\n * @usageNotes\n * ### Basic Examples\n *\n * ### Plain InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='InjectionToken'}\n *\n * ### Tree-shakable InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}\n *\n *\n * @publicApi\n */\n\nclass InjectionToken {\n /**\n * @param _desc Description for the token,\n * used only for debugging purposes,\n * it should but does not need to be unique\n * @param options Options for the token's usage, as described above\n */\n constructor(_desc, options) {\n this._desc = _desc;\n /** @internal */\n\n this.ngMetadataName = 'InjectionToken';\n this.ɵprov = undefined;\n\n if (typeof options == 'number') {\n (typeof ngDevMode === 'undefined' || ngDevMode) && assertLessThan(options, 0, 'Only negative numbers are supported here'); // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.\n // See `InjectorMarkers`\n\n this.__NG_ELEMENT_ID__ = options;\n } else if (options !== undefined) {\n this.ɵprov = ɵɵdefineInjectable({\n token: this,\n providedIn: options.providedIn || 'root',\n factory: options.factory\n });\n }\n }\n /**\n * @internal\n */\n\n\n get multi() {\n return this;\n }\n\n toString() {\n return `InjectionToken ${this._desc}`;\n }\n\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A DI token that you can use to create a virtual [provider](guide/glossary#provider)\n * that will populate the `entryComponents` field of components and NgModules\n * based on its `useValue` property value.\n * All components that are referenced in the `useValue` value (either directly\n * or in a nested array or map) are added to the `entryComponents` property.\n *\n * @usageNotes\n *\n * The following example shows how the router can populate the `entryComponents`\n * field of an NgModule based on a router configuration that refers\n * to components.\n *\n * ```typescript\n * // helper function inside the router\n * function provideRoutes(routes) {\n * return [\n * {provide: ROUTES, useValue: routes},\n * {provide: ANALYZE_FOR_ENTRY_COMPONENTS, useValue: routes, multi: true}\n * ];\n * }\n *\n * // user code\n * let routes = [\n * {path: '/root', component: RootComp},\n * {path: '/teams', component: TeamsComp}\n * ];\n *\n * @NgModule({\n * providers: [provideRoutes(routes)]\n * })\n * class ModuleWithRoutes {}\n * ```\n *\n * @publicApi\n * @deprecated Since 9.0.0. With Ivy, this property is no longer necessary.\n */\n\n\nconst ANALYZE_FOR_ENTRY_COMPONENTS = new InjectionToken('AnalyzeForEntryComponents'); // Stores the default value of `emitDistinctChangesOnly` when the `emitDistinctChangesOnly` is not\n// explicitly set.\n\nconst emitDistinctChangesOnlyDefaultValue = true;\n/**\n * Base class for query metadata.\n *\n * @see `ContentChildren`.\n * @see `ContentChild`.\n * @see `ViewChildren`.\n * @see `ViewChild`.\n *\n * @publicApi\n */\n\nclass Query {}\n/**\n * ContentChildren decorator and metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\n\n\nconst ContentChildren = makePropDecorator('ContentChildren', (selector, data = {}) => ({\n selector,\n first: false,\n isViewQuery: false,\n descendants: false,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n}), Query);\n/**\n * ContentChild decorator and metadata.\n *\n *\n * @Annotation\n *\n * @publicApi\n */\n\nconst ContentChild = makePropDecorator('ContentChild', (selector, data = {}) => ({\n selector,\n first: true,\n isViewQuery: false,\n descendants: true,\n ...data\n}), Query);\n/**\n * ViewChildren decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst ViewChildren = makePropDecorator('ViewChildren', (selector, data = {}) => ({\n selector,\n first: false,\n isViewQuery: true,\n descendants: true,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n}), Query);\n/**\n * ViewChild decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst ViewChild = makePropDecorator('ViewChild', (selector, data) => ({\n selector,\n first: true,\n isViewQuery: true,\n descendants: true,\n ...data\n}), Query);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar FactoryTarget;\n\n(function (FactoryTarget) {\n FactoryTarget[FactoryTarget[\"Directive\"] = 0] = \"Directive\";\n FactoryTarget[FactoryTarget[\"Component\"] = 1] = \"Component\";\n FactoryTarget[FactoryTarget[\"Injectable\"] = 2] = \"Injectable\";\n FactoryTarget[FactoryTarget[\"Pipe\"] = 3] = \"Pipe\";\n FactoryTarget[FactoryTarget[\"NgModule\"] = 4] = \"NgModule\";\n})(FactoryTarget || (FactoryTarget = {}));\n\nvar R3TemplateDependencyKind;\n\n(function (R3TemplateDependencyKind) {\n R3TemplateDependencyKind[R3TemplateDependencyKind[\"Directive\"] = 0] = \"Directive\";\n R3TemplateDependencyKind[R3TemplateDependencyKind[\"Pipe\"] = 1] = \"Pipe\";\n R3TemplateDependencyKind[R3TemplateDependencyKind[\"NgModule\"] = 2] = \"NgModule\";\n})(R3TemplateDependencyKind || (R3TemplateDependencyKind = {}));\n\nvar ViewEncapsulation;\n\n(function (ViewEncapsulation) {\n ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\"; // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n\n ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation || (ViewEncapsulation = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getCompilerFacade(request) {\n const globalNg = _global['ng'];\n\n if (globalNg && globalNg.ɵcompilerFacade) {\n return globalNg.ɵcompilerFacade;\n }\n\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n // Log the type as an error so that a developer can easily navigate to the type from the\n // console.\n console.error(`JIT compilation failed for ${request.kind}`, request.type);\n let message = `The ${request.kind} '${request.type.name}' needs to be compiled using the JIT compiler, but '@angular/compiler' is not available.\\n\\n`;\n\n if (request.usage === 1\n /* JitCompilerUsage.PartialDeclaration */\n ) {\n message += `The ${request.kind} is part of a library that has been partially compiled.\\n`;\n message += `However, the Angular Linker has not processed the library such that JIT compilation is used as fallback.\\n`;\n message += '\\n';\n message += `Ideally, the library is processed using the Angular Linker to become fully AOT compiled.\\n`;\n } else {\n message += `JIT compilation is discouraged for production use-cases! Consider using AOT mode instead.\\n`;\n }\n\n message += `Alternatively, the JIT compiler should be loaded by bootstrapping using '@angular/platform-browser-dynamic' or '@angular/platform-server',\\n`;\n message += `or manually provide the compiler with 'import \"@angular/compiler\";' before bootstrapping.`;\n throw new Error(message);\n } else {\n throw new Error('JIT compiler unavailable');\n }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n *\n * Represents a type that a Component or other object is instances of.\n *\n * An example of a `Type` is `MyCustomComponent` class, which in JavaScript is represented by\n * the `MyCustomComponent` constructor function.\n *\n * @publicApi\n */\n\n\nconst Type = Function;\n\nfunction isType(v) {\n return typeof v === 'function';\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Equivalent to ES6 spread, add each item to an array.\n *\n * @param items The items to add\n * @param arr The array to which you want to add the items\n */\n\n\nfunction addAllToArray(items, arr) {\n for (let i = 0; i < items.length; i++) {\n arr.push(items[i]);\n }\n}\n/**\n * Determines if the contents of two arrays is identical\n *\n * @param a first array\n * @param b second array\n * @param identityAccessor Optional function for extracting stable object identity from a value in\n * the array.\n */\n\n\nfunction arrayEquals(a, b, identityAccessor) {\n if (a.length !== b.length) return false;\n\n for (let i = 0; i < a.length; i++) {\n let valueA = a[i];\n let valueB = b[i];\n\n if (identityAccessor) {\n valueA = identityAccessor(valueA);\n valueB = identityAccessor(valueB);\n }\n\n if (valueB !== valueA) {\n return false;\n }\n }\n\n return true;\n}\n/**\n * Flattens an array.\n */\n\n\nfunction flatten(list, dst) {\n if (dst === undefined) dst = list;\n\n for (let i = 0; i < list.length; i++) {\n let item = list[i];\n\n if (Array.isArray(item)) {\n // we need to inline it.\n if (dst === list) {\n // Our assumption that the list was already flat was wrong and\n // we need to clone flat since we need to write to it.\n dst = list.slice(0, i);\n }\n\n flatten(item, dst);\n } else if (dst !== list) {\n dst.push(item);\n }\n }\n\n return dst;\n}\n\nfunction deepForEach(input, fn) {\n input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));\n}\n\nfunction addToArray(arr, index, value) {\n // perf: array.push is faster than array.splice!\n if (index >= arr.length) {\n arr.push(value);\n } else {\n arr.splice(index, 0, value);\n }\n}\n\nfunction removeFromArray(arr, index) {\n // perf: array.pop is faster than array.splice!\n if (index >= arr.length - 1) {\n return arr.pop();\n } else {\n return arr.splice(index, 1)[0];\n }\n}\n\nfunction newArray(size, value) {\n const list = [];\n\n for (let i = 0; i < size; i++) {\n list.push(value);\n }\n\n return list;\n}\n/**\n * Remove item from array (Same as `Array.splice()` but faster.)\n *\n * `Array.splice()` is not as fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * https://jsperf.com/fast-array-splice (About 20x faster)\n *\n * @param array Array to splice\n * @param index Index of element in array to remove.\n * @param count Number of items to remove.\n */\n\n\nfunction arraySplice(array, index, count) {\n const length = array.length - count;\n\n while (index < length) {\n array[index] = array[index + count];\n index++;\n }\n\n while (count--) {\n array.pop(); // shrink the array\n }\n}\n/**\n * Same as `Array.splice(index, 0, value)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value Value to add to array.\n */\n\n\nfunction arrayInsert(array, index, value) {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\n\n while (end > index) {\n const previousEnd = end - 1;\n array[end] = array[previousEnd];\n end = previousEnd;\n }\n\n array[index] = value;\n}\n/**\n * Same as `Array.splice2(index, 0, value1, value2)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value1 Value to add to array.\n * @param value2 Value to add to array.\n */\n\n\nfunction arrayInsert2(array, index, value1, value2) {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\n\n if (end == index) {\n // inserting at the end.\n array.push(value1, value2);\n } else if (end === 1) {\n // corner case when we have less items in array than we have items to insert.\n array.push(value2, array[0]);\n array[0] = value1;\n } else {\n end--;\n array.push(array[end - 1], array[end]);\n\n while (end > index) {\n const previousEnd = end - 2;\n array[end] = array[previousEnd];\n end--;\n }\n\n array[index] = value1;\n array[index + 1] = value2;\n }\n}\n/**\n * Insert a `value` into an `array` so that the array remains sorted.\n *\n * NOTE:\n * - Duplicates are not allowed, and are ignored.\n * - This uses binary search algorithm for fast inserts.\n *\n * @param array A sorted array to insert into.\n * @param value The value to insert.\n * @returns index of the inserted value.\n */\n\n\nfunction arrayInsertSorted(array, value) {\n let index = arrayIndexOfSorted(array, value);\n\n if (index < 0) {\n // if we did not find it insert it.\n index = ~index;\n arrayInsert(array, index, value);\n }\n\n return index;\n}\n/**\n * Remove `value` from a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to remove from.\n * @param value The value to remove.\n * @returns index of the removed value.\n * - positive index if value found and removed.\n * - negative index if value not found. (`~index` to get the value where it should have been\n * inserted)\n */\n\n\nfunction arrayRemoveSorted(array, value) {\n const index = arrayIndexOfSorted(array, value);\n\n if (index >= 0) {\n arraySplice(array, index, 1);\n }\n\n return index;\n}\n/**\n * Get an index of an `value` in a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @returns index of the value.\n * - positive index if value found.\n * - negative index if value not found. (`~index` to get the value where it should have been\n * located)\n */\n\n\nfunction arrayIndexOfSorted(array, value) {\n return _arrayIndexOfSorted(array, value, 0);\n}\n/**\n * Set a `value` for a `key`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or create.\n * @param value The value to set for a `key`.\n * @returns index (always even) of where the value vas set.\n */\n\n\nfunction keyValueArraySet(keyValueArray, key, value) {\n let index = keyValueArrayIndexOf(keyValueArray, key);\n\n if (index >= 0) {\n // if we found it set it.\n keyValueArray[index | 1] = value;\n } else {\n index = ~index;\n arrayInsert2(keyValueArray, index, key, value);\n }\n\n return index;\n}\n/**\n * Retrieve a `value` for a `key` (on `undefined` if not found.)\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @return The `value` stored at the `key` location or `undefined if not found.\n */\n\n\nfunction keyValueArrayGet(keyValueArray, key) {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n\n if (index >= 0) {\n // if we found it retrieve it.\n return keyValueArray[index | 1];\n }\n\n return undefined;\n}\n/**\n * Retrieve a `key` index value in the array or `-1` if not found.\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @returns index of where the key is (or should have been.)\n * - positive (even) index if key found.\n * - negative index if key not found. (`~index` (even) to get the index where it should have\n * been inserted.)\n */\n\n\nfunction keyValueArrayIndexOf(keyValueArray, key) {\n return _arrayIndexOfSorted(keyValueArray, key, 1);\n}\n/**\n * Delete a `key` (and `value`) from the `KeyValueArray`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or delete (if exist).\n * @returns index of where the key was (or should have been.)\n * - positive (even) index if key found and deleted.\n * - negative index if key not found. (`~index` (even) to get the index where it should have\n * been.)\n */\n\n\nfunction keyValueArrayDelete(keyValueArray, key) {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n\n if (index >= 0) {\n // if we found it remove it.\n arraySplice(keyValueArray, index, 2);\n }\n\n return index;\n}\n/**\n * INTERNAL: Get an index of an `value` in a sorted `array` by grouping search by `shift`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @param shift grouping shift.\n * - `0` means look at every location\n * - `1` means only look at every other (even) location (the odd locations are to be ignored as\n * they are values.)\n * @returns index of the value.\n * - positive index if value found.\n * - negative index if value not found. (`~index` to get the value where it should have been\n * inserted)\n */\n\n\nfunction _arrayIndexOfSorted(array, value, shift) {\n ngDevMode && assertEqual(Array.isArray(array), true, 'Expecting an array');\n let start = 0;\n let end = array.length >> shift;\n\n while (end !== start) {\n const middle = start + (end - start >> 1); // find the middle.\n\n const current = array[middle << shift];\n\n if (value === current) {\n return middle << shift;\n } else if (current > value) {\n end = middle;\n } else {\n start = middle + 1; // We already searched middle so make it non-inclusive by adding 1\n }\n }\n\n return ~(end << shift);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/*\n * #########################\n * Attention: These Regular expressions have to hold even if the code is minified!\n * ##########################\n */\n\n/**\n * Regular expression that detects pass-through constructors for ES5 output. This Regex\n * intends to capture the common delegation pattern emitted by TypeScript and Babel. Also\n * it intends to capture the pattern where existing constructors have been downleveled from\n * ES2015 to ES5 using TypeScript w/ downlevel iteration. e.g.\n *\n * ```\n * function MyClass() {\n * var _this = _super.apply(this, arguments) || this;\n * ```\n *\n * downleveled to ES5 with `downlevelIteration` for TypeScript < 4.2:\n * ```\n * function MyClass() {\n * var _this = _super.apply(this, __spread(arguments)) || this;\n * ```\n *\n * or downleveled to ES5 with `downlevelIteration` for TypeScript >= 4.2:\n * ```\n * function MyClass() {\n * var _this = _super.apply(this, __spreadArray([], __read(arguments), false)) || this;\n * ```\n *\n * More details can be found in: https://github.com/angular/angular/issues/38453.\n */\n\n\nconst ES5_DELEGATE_CTOR = /^function\\s+\\S+\\(\\)\\s*{[\\s\\S]+\\.apply\\(this,\\s*(arguments|(?:[^()]+\\(\\[\\],)?[^()]+\\(arguments\\).*)\\)/;\n/** Regular expression that detects ES2015 classes which extend from other classes. */\n\nconst ES2015_INHERITED_CLASS = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes and\n * have an explicit constructor defined.\n */\n\nconst ES2015_INHERITED_CLASS_WITH_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes\n * and inherit a constructor.\n */\n\nconst ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(\\)\\s*{[^}]*super\\(\\.\\.\\.arguments\\)/;\n/**\n * Determine whether a stringified type is a class which delegates its constructor\n * to its parent.\n *\n * This is not trivial since compiled code can actually contain a constructor function\n * even if the original source code did not. For instance, when the child class contains\n * an initialized instance property.\n */\n\nfunction isDelegateCtor(typeStr) {\n return ES5_DELEGATE_CTOR.test(typeStr) || ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR.test(typeStr) || ES2015_INHERITED_CLASS.test(typeStr) && !ES2015_INHERITED_CLASS_WITH_CTOR.test(typeStr);\n}\n\nclass ReflectionCapabilities {\n constructor(reflect) {\n this._reflect = reflect || _global['Reflect'];\n }\n\n factory(t) {\n return (...args) => new t(...args);\n }\n /** @internal */\n\n\n _zipTypesAndAnnotations(paramTypes, paramAnnotations) {\n let result;\n\n if (typeof paramTypes === 'undefined') {\n result = newArray(paramAnnotations.length);\n } else {\n result = newArray(paramTypes.length);\n }\n\n for (let i = 0; i < result.length; i++) {\n // TS outputs Object for parameters without types, while Traceur omits\n // the annotations. For now we preserve the Traceur behavior to aid\n // migration, but this can be revisited.\n if (typeof paramTypes === 'undefined') {\n result[i] = [];\n } else if (paramTypes[i] && paramTypes[i] != Object) {\n result[i] = [paramTypes[i]];\n } else {\n result[i] = [];\n }\n\n if (paramAnnotations && paramAnnotations[i] != null) {\n result[i] = result[i].concat(paramAnnotations[i]);\n }\n }\n\n return result;\n }\n\n _ownParameters(type, parentCtor) {\n const typeStr = type.toString(); // If we have no decorators, we only have function.length as metadata.\n // In that case, to detect whether a child class declared an own constructor or not,\n // we need to look inside of that constructor to check whether it is\n // just calling the parent.\n // This also helps to work around for https://github.com/Microsoft/TypeScript/issues/12439\n // that sets 'design:paramtypes' to []\n // if a class inherits from another class but has no ctor declared itself.\n\n if (isDelegateCtor(typeStr)) {\n return null;\n } // Prefer the direct API.\n\n\n if (type.parameters && type.parameters !== parentCtor.parameters) {\n return type.parameters;\n } // API of tsickle for lowering decorators to properties on the class.\n\n\n const tsickleCtorParams = type.ctorParameters;\n\n if (tsickleCtorParams && tsickleCtorParams !== parentCtor.ctorParameters) {\n // Newer tsickle uses a function closure\n // Retain the non-function case for compatibility with older tsickle\n const ctorParameters = typeof tsickleCtorParams === 'function' ? tsickleCtorParams() : tsickleCtorParams;\n const paramTypes = ctorParameters.map(ctorParam => ctorParam && ctorParam.type);\n const paramAnnotations = ctorParameters.map(ctorParam => ctorParam && convertTsickleDecoratorIntoMetadata(ctorParam.decorators));\n return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n } // API for metadata created by invoking the decorators.\n\n\n const paramAnnotations = type.hasOwnProperty(PARAMETERS) && type[PARAMETERS];\n\n const paramTypes = this._reflect && this._reflect.getOwnMetadata && this._reflect.getOwnMetadata('design:paramtypes', type);\n\n if (paramTypes || paramAnnotations) {\n return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n } // If a class has no decorators, at least create metadata\n // based on function.length.\n // Note: We know that this is a real constructor as we checked\n // the content of the constructor above.\n\n\n return newArray(type.length);\n }\n\n parameters(type) {\n // Note: only report metadata if we have at least one class decorator\n // to stay in sync with the static reflector.\n if (!isType(type)) {\n return [];\n }\n\n const parentCtor = getParentCtor(type);\n\n let parameters = this._ownParameters(type, parentCtor);\n\n if (!parameters && parentCtor !== Object) {\n parameters = this.parameters(parentCtor);\n }\n\n return parameters || [];\n }\n\n _ownAnnotations(typeOrFunc, parentCtor) {\n // Prefer the direct API.\n if (typeOrFunc.annotations && typeOrFunc.annotations !== parentCtor.annotations) {\n let annotations = typeOrFunc.annotations;\n\n if (typeof annotations === 'function' && annotations.annotations) {\n annotations = annotations.annotations;\n }\n\n return annotations;\n } // API of tsickle for lowering decorators to properties on the class.\n\n\n if (typeOrFunc.decorators && typeOrFunc.decorators !== parentCtor.decorators) {\n return convertTsickleDecoratorIntoMetadata(typeOrFunc.decorators);\n } // API for metadata created by invoking the decorators.\n\n\n if (typeOrFunc.hasOwnProperty(ANNOTATIONS)) {\n return typeOrFunc[ANNOTATIONS];\n }\n\n return null;\n }\n\n annotations(typeOrFunc) {\n if (!isType(typeOrFunc)) {\n return [];\n }\n\n const parentCtor = getParentCtor(typeOrFunc);\n const ownAnnotations = this._ownAnnotations(typeOrFunc, parentCtor) || [];\n const parentAnnotations = parentCtor !== Object ? this.annotations(parentCtor) : [];\n return parentAnnotations.concat(ownAnnotations);\n }\n\n _ownPropMetadata(typeOrFunc, parentCtor) {\n // Prefer the direct API.\n if (typeOrFunc.propMetadata && typeOrFunc.propMetadata !== parentCtor.propMetadata) {\n let propMetadata = typeOrFunc.propMetadata;\n\n if (typeof propMetadata === 'function' && propMetadata.propMetadata) {\n propMetadata = propMetadata.propMetadata;\n }\n\n return propMetadata;\n } // API of tsickle for lowering decorators to properties on the class.\n\n\n if (typeOrFunc.propDecorators && typeOrFunc.propDecorators !== parentCtor.propDecorators) {\n const propDecorators = typeOrFunc.propDecorators;\n const propMetadata = {};\n Object.keys(propDecorators).forEach(prop => {\n propMetadata[prop] = convertTsickleDecoratorIntoMetadata(propDecorators[prop]);\n });\n return propMetadata;\n } // API for metadata created by invoking the decorators.\n\n\n if (typeOrFunc.hasOwnProperty(PROP_METADATA)) {\n return typeOrFunc[PROP_METADATA];\n }\n\n return null;\n }\n\n propMetadata(typeOrFunc) {\n if (!isType(typeOrFunc)) {\n return {};\n }\n\n const parentCtor = getParentCtor(typeOrFunc);\n const propMetadata = {};\n\n if (parentCtor !== Object) {\n const parentPropMetadata = this.propMetadata(parentCtor);\n Object.keys(parentPropMetadata).forEach(propName => {\n propMetadata[propName] = parentPropMetadata[propName];\n });\n }\n\n const ownPropMetadata = this._ownPropMetadata(typeOrFunc, parentCtor);\n\n if (ownPropMetadata) {\n Object.keys(ownPropMetadata).forEach(propName => {\n const decorators = [];\n\n if (propMetadata.hasOwnProperty(propName)) {\n decorators.push(...propMetadata[propName]);\n }\n\n decorators.push(...ownPropMetadata[propName]);\n propMetadata[propName] = decorators;\n });\n }\n\n return propMetadata;\n }\n\n ownPropMetadata(typeOrFunc) {\n if (!isType(typeOrFunc)) {\n return {};\n }\n\n return this._ownPropMetadata(typeOrFunc, getParentCtor(typeOrFunc)) || {};\n }\n\n hasLifecycleHook(type, lcProperty) {\n return type instanceof Type && lcProperty in type.prototype;\n }\n\n}\n\nfunction convertTsickleDecoratorIntoMetadata(decoratorInvocations) {\n if (!decoratorInvocations) {\n return [];\n }\n\n return decoratorInvocations.map(decoratorInvocation => {\n const decoratorType = decoratorInvocation.type;\n const annotationCls = decoratorType.annotationCls;\n const annotationArgs = decoratorInvocation.args ? decoratorInvocation.args : [];\n return new annotationCls(...annotationArgs);\n });\n}\n\nfunction getParentCtor(ctor) {\n const parentProto = ctor.prototype ? Object.getPrototypeOf(ctor.prototype) : null;\n const parentCtor = parentProto ? parentProto.constructor : null; // Note: We always use `Object` as the null value\n // to simplify checking later on.\n\n return parentCtor || Object;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nconst _THROW_IF_NOT_FOUND = {};\nconst THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;\n/*\n * Name of a property (that we patch onto DI decorator), which is used as an annotation of which\n * InjectFlag this decorator represents. This allows to avoid direct references to the DI decorators\n * in the code, thus making them tree-shakable.\n */\n\nconst DI_DECORATOR_FLAG = '__NG_DI_FLAG__';\nconst NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';\nconst NG_TOKEN_PATH = 'ngTokenPath';\nconst NEW_LINE = /\\n/gm;\nconst NO_NEW_LINE = 'ɵ';\nconst SOURCE = '__source';\n/**\n * Current injector value used by `inject`.\n * - `undefined`: it is an error to call `inject`\n * - `null`: `inject` can be called but there is no injector (limp-mode).\n * - Injector instance: Use the injector for resolution.\n */\n\nlet _currentInjector = undefined;\n\nfunction setCurrentInjector(injector) {\n const former = _currentInjector;\n _currentInjector = injector;\n return former;\n}\n\nfunction injectInjectorOnly(token, flags = InjectFlags.Default) {\n if (_currentInjector === undefined) {\n throw new RuntimeError(-203\n /* RuntimeErrorCode.MISSING_INJECTION_CONTEXT */\n , ngDevMode && `inject() must be called from an injection context such as a constructor, a factory function, a field initializer, or a function used with \\`EnvironmentInjector#runInContext\\`.`);\n } else if (_currentInjector === null) {\n return injectRootLimpMode(token, undefined, flags);\n } else {\n return _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);\n }\n}\n\nfunction ɵɵinject(token, flags = InjectFlags.Default) {\n return (getInjectImplementation() || injectInjectorOnly)(resolveForwardRef(token), flags);\n}\n/**\n * Throws an error indicating that a factory function could not be generated by the compiler for a\n * particular class.\n *\n * The name of the class is not mentioned here, but will be in the generated factory function name\n * and thus in the stack trace.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinvalidFactoryDep(index) {\n throw new RuntimeError(202\n /* RuntimeErrorCode.INVALID_FACTORY_DEPENDENCY */\n , ngDevMode && `This constructor is not compatible with Angular Dependency Injection because its dependency at index ${index} of the parameter list is invalid.\nThis can happen if the dependency type is a primitive like a string or if an ancestor of this class is missing an Angular decorator.\n\nPlease check that 1) the type for the parameter at index ${index} is correct and 2) the correct Angular decorators are defined for this class and its ancestors.`);\n}\n/**\n * Injects a token from the currently active injector.\n * `inject` is only supported during instantiation of a dependency by the DI system. It can be used\n * during:\n * - Construction (via the `constructor`) of a class being instantiated by the DI system, such\n * as an `@Injectable` or `@Component`.\n * - In the initializer for fields of such classes.\n * - In the factory function specified for `useFactory` of a `Provider` or an `@Injectable`.\n * - In the `factory` function specified for an `InjectionToken`.\n *\n * @param token A token that represents a dependency that should be injected.\n * @param flags Optional flags that control how injection is executed.\n * The flags correspond to injection strategies that can be specified with\n * parameter decorators `@Host`, `@Self`, `@SkipSef`, and `@Optional`.\n * @returns the injected value if operation is successful, `null` otherwise.\n * @throws if called outside of a supported context.\n *\n * @usageNotes\n * In practice the `inject()` calls are allowed in a constructor, a constructor parameter and a\n * field initializer:\n *\n * ```typescript\n * @Injectable({providedIn: 'root'})\n * export class Car {\n * radio: Radio|undefined;\n * // OK: field initializer\n * spareTyre = inject(Tyre);\n *\n * constructor() {\n * // OK: constructor body\n * this.radio = inject(Radio);\n * }\n * }\n * ```\n *\n * It is also legal to call `inject` from a provider's factory:\n *\n * ```typescript\n * providers: [\n * {provide: Car, useFactory: () => {\n * // OK: a class factory\n * const engine = inject(Engine);\n * return new Car(engine);\n * }}\n * ]\n * ```\n *\n * Calls to the `inject()` function outside of the class creation context will result in error. Most\n * notably, calls to `inject()` are disallowed after a class instance was created, in methods\n * (including lifecycle hooks):\n *\n * ```typescript\n * @Component({ ... })\n * export class CarComponent {\n * ngOnInit() {\n * // ERROR: too late, the component instance was already created\n * const engine = inject(Engine);\n * engine.start();\n * }\n * }\n * ```\n *\n * @publicApi\n */\n\n\nfunction inject(token, flags = InjectFlags.Default) {\n if (typeof flags !== 'number') {\n // While TypeScript doesn't accept it without a cast, bitwise OR with false-y values in\n // JavaScript is a no-op. We can use that for a very codesize-efficient conversion from\n // `InjectOptions` to `InjectFlags`.\n flags = 0\n /* InternalInjectFlags.Default */\n | ( // comment to force a line break in the formatter\n flags.optional && 8\n /* InternalInjectFlags.Optional */\n ) | (flags.host && 1\n /* InternalInjectFlags.Host */\n ) | (flags.self && 2\n /* InternalInjectFlags.Self */\n ) | (flags.skipSelf && 4\n /* InternalInjectFlags.SkipSelf */\n );\n }\n\n return ɵɵinject(token, flags);\n}\n\nfunction injectArgs(types) {\n const args = [];\n\n for (let i = 0; i < types.length; i++) {\n const arg = resolveForwardRef(types[i]);\n\n if (Array.isArray(arg)) {\n if (arg.length === 0) {\n throw new RuntimeError(900\n /* RuntimeErrorCode.INVALID_DIFFER_INPUT */\n , ngDevMode && 'Arguments array must have arguments.');\n }\n\n let type = undefined;\n let flags = InjectFlags.Default;\n\n for (let j = 0; j < arg.length; j++) {\n const meta = arg[j];\n const flag = getInjectFlag(meta);\n\n if (typeof flag === 'number') {\n // Special case when we handle @Inject decorator.\n if (flag === -1\n /* DecoratorFlags.Inject */\n ) {\n type = meta.token;\n } else {\n flags |= flag;\n }\n } else {\n type = meta;\n }\n }\n\n args.push(ɵɵinject(type, flags));\n } else {\n args.push(ɵɵinject(arg));\n }\n }\n\n return args;\n}\n/**\n * Attaches a given InjectFlag to a given decorator using monkey-patching.\n * Since DI decorators can be used in providers `deps` array (when provider is configured using\n * `useFactory`) without initialization (e.g. `Host`) and as an instance (e.g. `new Host()`), we\n * attach the flag to make it available both as a static property and as a field on decorator\n * instance.\n *\n * @param decorator Provided DI decorator.\n * @param flag InjectFlag that should be applied.\n */\n\n\nfunction attachInjectFlag(decorator, flag) {\n decorator[DI_DECORATOR_FLAG] = flag;\n decorator.prototype[DI_DECORATOR_FLAG] = flag;\n return decorator;\n}\n/**\n * Reads monkey-patched property that contains InjectFlag attached to a decorator.\n *\n * @param token Token that may contain monkey-patched DI flags property.\n */\n\n\nfunction getInjectFlag(token) {\n return token[DI_DECORATOR_FLAG];\n}\n\nfunction catchInjectorError(e, token, injectorErrorName, source) {\n const tokenPath = e[NG_TEMP_TOKEN_PATH];\n\n if (token[SOURCE]) {\n tokenPath.unshift(token[SOURCE]);\n }\n\n e.message = formatError('\\n' + e.message, tokenPath, injectorErrorName, source);\n e[NG_TOKEN_PATH] = tokenPath;\n e[NG_TEMP_TOKEN_PATH] = null;\n throw e;\n}\n\nfunction formatError(text, obj, injectorErrorName, source = null) {\n text = text && text.charAt(0) === '\\n' && text.charAt(1) == NO_NEW_LINE ? text.slice(2) : text;\n let context = stringify(obj);\n\n if (Array.isArray(obj)) {\n context = obj.map(stringify).join(' -> ');\n } else if (typeof obj === 'object') {\n let parts = [];\n\n for (let key in obj) {\n if (obj.hasOwnProperty(key)) {\n let value = obj[key];\n parts.push(key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));\n }\n }\n\n context = `{${parts.join(', ')}}`;\n }\n\n return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${text.replace(NEW_LINE, '\\n ')}`;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Inject decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nconst Inject = attachInjectFlag( // Disable tslint because `DecoratorFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nmakeParamDecorator('Inject', token => ({\n token\n})), -1\n/* DecoratorFlags.Inject */\n);\n/**\n * Optional decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst Optional = // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Optional'), 8\n/* InternalInjectFlags.Optional */\n);\n/**\n * Self decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst Self = // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Self'), 2\n/* InternalInjectFlags.Self */\n);\n/**\n * `SkipSelf` decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst SkipSelf = // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('SkipSelf'), 4\n/* InternalInjectFlags.SkipSelf */\n);\n/**\n * Host decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nconst Host = // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Host'), 1\n/* InternalInjectFlags.Host */\n);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nlet _reflect = null;\n\nfunction getReflect() {\n return _reflect = _reflect || new ReflectionCapabilities();\n}\n\nfunction reflectDependencies(type) {\n return convertDependencies(getReflect().parameters(type));\n}\n\nfunction convertDependencies(deps) {\n return deps.map(dep => reflectDependency(dep));\n}\n\nfunction reflectDependency(dep) {\n const meta = {\n token: null,\n attribute: null,\n host: false,\n optional: false,\n self: false,\n skipSelf: false\n };\n\n if (Array.isArray(dep) && dep.length > 0) {\n for (let j = 0; j < dep.length; j++) {\n const param = dep[j];\n\n if (param === undefined) {\n // param may be undefined if type of dep is not set by ngtsc\n continue;\n }\n\n const proto = Object.getPrototypeOf(param);\n\n if (param instanceof Optional || proto.ngMetadataName === 'Optional') {\n meta.optional = true;\n } else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {\n meta.skipSelf = true;\n } else if (param instanceof Self || proto.ngMetadataName === 'Self') {\n meta.self = true;\n } else if (param instanceof Host || proto.ngMetadataName === 'Host') {\n meta.host = true;\n } else if (param instanceof Inject) {\n meta.token = param.token;\n } else if (param instanceof Attribute) {\n if (param.attributeName === undefined) {\n throw new RuntimeError(204\n /* RuntimeErrorCode.INVALID_INJECTION_TOKEN */\n , ngDevMode && `Attribute name must be defined.`);\n }\n\n meta.attribute = param.attributeName;\n } else {\n meta.token = param;\n }\n }\n } else if (dep === undefined || Array.isArray(dep) && dep.length === 0) {\n meta.token = null;\n } else {\n meta.token = dep;\n }\n\n return meta;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Used to resolve resource URLs on `@Component` when used with JIT compilation.\n *\n * Example:\n * ```\n * @Component({\n * selector: 'my-comp',\n * templateUrl: 'my-comp.html', // This requires asynchronous resolution\n * })\n * class MyComponent{\n * }\n *\n * // Calling `renderComponent` will fail because `renderComponent` is a synchronous process\n * // and `MyComponent`'s `@Component.templateUrl` needs to be resolved asynchronously.\n *\n * // Calling `resolveComponentResources()` will resolve `@Component.templateUrl` into\n * // `@Component.template`, which allows `renderComponent` to proceed in a synchronous manner.\n *\n * // Use browser's `fetch()` function as the default resource resolution strategy.\n * resolveComponentResources(fetch).then(() => {\n * // After resolution all URLs have been converted into `template` strings.\n * renderComponent(MyComponent);\n * });\n *\n * ```\n *\n * NOTE: In AOT the resolution happens during compilation, and so there should be no need\n * to call this method outside JIT mode.\n *\n * @param resourceResolver a function which is responsible for returning a `Promise` to the\n * contents of the resolved URL. Browser's `fetch()` method is a good default implementation.\n */\n\n\nfunction resolveComponentResources(resourceResolver) {\n // Store all promises which are fetching the resources.\n const componentResolved = []; // Cache so that we don't fetch the same resource more than once.\n\n const urlMap = new Map();\n\n function cachedResourceResolve(url) {\n let promise = urlMap.get(url);\n\n if (!promise) {\n const resp = resourceResolver(url);\n urlMap.set(url, promise = resp.then(unwrapResponse));\n }\n\n return promise;\n }\n\n componentResourceResolutionQueue.forEach((component, type) => {\n const promises = [];\n\n if (component.templateUrl) {\n promises.push(cachedResourceResolve(component.templateUrl).then(template => {\n component.template = template;\n }));\n }\n\n const styleUrls = component.styleUrls;\n const styles = component.styles || (component.styles = []);\n const styleOffset = component.styles.length;\n styleUrls && styleUrls.forEach((styleUrl, index) => {\n styles.push(''); // pre-allocate array.\n\n promises.push(cachedResourceResolve(styleUrl).then(style => {\n styles[styleOffset + index] = style;\n styleUrls.splice(styleUrls.indexOf(styleUrl), 1);\n\n if (styleUrls.length == 0) {\n component.styleUrls = undefined;\n }\n }));\n });\n const fullyResolved = Promise.all(promises).then(() => componentDefResolved(type));\n componentResolved.push(fullyResolved);\n });\n clearResolutionOfComponentResourcesQueue();\n return Promise.all(componentResolved).then(() => undefined);\n}\n\nlet componentResourceResolutionQueue = new Map(); // Track when existing ɵcmp for a Type is waiting on resources.\n\nconst componentDefPendingResolution = new Set();\n\nfunction maybeQueueResolutionOfComponentResources(type, metadata) {\n if (componentNeedsResolution(metadata)) {\n componentResourceResolutionQueue.set(type, metadata);\n componentDefPendingResolution.add(type);\n }\n}\n\nfunction isComponentDefPendingResolution(type) {\n return componentDefPendingResolution.has(type);\n}\n\nfunction componentNeedsResolution(component) {\n return !!(component.templateUrl && !component.hasOwnProperty('template') || component.styleUrls && component.styleUrls.length);\n}\n\nfunction clearResolutionOfComponentResourcesQueue() {\n const old = componentResourceResolutionQueue;\n componentResourceResolutionQueue = new Map();\n return old;\n}\n\nfunction restoreComponentResolutionQueue(queue) {\n componentDefPendingResolution.clear();\n queue.forEach((_, type) => componentDefPendingResolution.add(type));\n componentResourceResolutionQueue = queue;\n}\n\nfunction isComponentResourceResolutionQueueEmpty() {\n return componentResourceResolutionQueue.size === 0;\n}\n\nfunction unwrapResponse(response) {\n return typeof response == 'string' ? response : response.text();\n}\n\nfunction componentDefResolved(type) {\n componentDefPendingResolution.delete(type);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Map of module-id to the corresponding NgModule.\n */\n\n\nconst modules = new Map();\n/**\n * Whether to check for duplicate NgModule registrations.\n *\n * This can be disabled for testing.\n */\n\nlet checkForDuplicateNgModules = true;\n\nfunction assertSameOrNotExisting(id, type, incoming) {\n if (type && type !== incoming && checkForDuplicateNgModules) {\n throw new Error(`Duplicate module registered for ${id} - ${stringify(type)} vs ${stringify(type.name)}`);\n }\n}\n/**\n * Adds the given NgModule type to Angular's NgModule registry.\n *\n * This is generated as a side-effect of NgModule compilation. Note that the `id` is passed in\n * explicitly and not read from the NgModule definition. This is for two reasons: it avoids a\n * megamorphic read, and in JIT there's a chicken-and-egg problem where the NgModule may not be\n * fully resolved when it's registered.\n *\n * @codeGenApi\n */\n\n\nfunction registerNgModuleType(ngModuleType, id) {\n const existing = modules.get(id) || null;\n assertSameOrNotExisting(id, existing, ngModuleType);\n modules.set(id, ngModuleType);\n}\n\nfunction clearModulesForTest() {\n modules.clear();\n}\n\nfunction getRegisteredNgModuleType(id) {\n return modules.get(id);\n}\n/**\n * Control whether the NgModule registration system enforces that each NgModule type registered has\n * a unique id.\n *\n * This is useful for testing as the NgModule registry cannot be properly reset between tests with\n * Angular's current API.\n */\n\n\nfunction setAllowDuplicateNgModuleIdsForTest(allowDuplicates) {\n checkForDuplicateNgModules = !allowDuplicates;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Most of the use of `document` in Angular is from within the DI system so it is possible to simply\n * inject the `DOCUMENT` token and are done.\n *\n * Ivy is special because it does not rely upon the DI and must get hold of the document some other\n * way.\n *\n * The solution is to define `getDocument()` and `setDocument()` top-level functions for ivy.\n * Wherever ivy needs the global document, it calls `getDocument()` instead.\n *\n * When running ivy outside of a browser environment, it is necessary to call `setDocument()` to\n * tell ivy what the global `document` is.\n *\n * Angular does this for us in each of the standard platforms (`Browser`, `Server`, and `WebWorker`)\n * by calling `setDocument()` when providing the `DOCUMENT` token.\n */\n\n\nlet DOCUMENT = undefined;\n/**\n * Tell ivy what the `document` is for this platform.\n *\n * It is only necessary to call this if the current platform is not a browser.\n *\n * @param document The object representing the global `document` in this environment.\n */\n\nfunction setDocument(document) {\n DOCUMENT = document;\n}\n/**\n * Access the object that represents the `document` for this platform.\n *\n * Ivy calls this whenever it needs to access the `document` object.\n * For example to create the renderer or to do sanitization.\n */\n\n\nfunction getDocument() {\n if (DOCUMENT !== undefined) {\n return DOCUMENT;\n } else if (typeof document !== 'undefined') {\n return document;\n } // No \"document\" can be found. This should only happen if we are running ivy outside Angular and\n // the current platform is not a browser. Since this is not a supported scenario at the moment\n // this should not happen in Angular apps.\n // Once we support running ivy outside of Angular we will need to publish `setDocument()` as a\n // public API. Meanwhile we just return `undefined` and let the application fail.\n\n\n return undefined;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The Trusted Types policy, or null if Trusted Types are not\n * enabled/supported, or undefined if the policy has not been created yet.\n */\n\n\nlet policy$1;\n/**\n * Returns the Trusted Types policy, or null if Trusted Types are not\n * enabled/supported. The first call to this function will create the policy.\n */\n\nfunction getPolicy$1() {\n if (policy$1 === undefined) {\n policy$1 = null;\n\n if (_global.trustedTypes) {\n try {\n policy$1 = _global.trustedTypes.createPolicy('angular', {\n createHTML: s => s,\n createScript: s => s,\n createScriptURL: s => s\n });\n } catch {// trustedTypes.createPolicy throws if called with a name that is\n // already registered, even in report-only mode. Until the API changes,\n // catch the error not to break the applications functionally. In such\n // cases, the code will fall back to using strings.\n }\n }\n }\n\n return policy$1;\n}\n/**\n * Unsafely promote a string to a TrustedHTML, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will be interpreted as HTML by a browser, e.g. when assigning to\n * element.innerHTML.\n */\n\n\nfunction trustedHTMLFromString(html) {\n return getPolicy$1()?.createHTML(html) || html;\n}\n/**\n * Unsafely promote a string to a TrustedScript, falling back to strings when\n * Trusted Types are not available.\n * @security In particular, it must be assured that the provided string will\n * never cause an XSS vulnerability if used in a context that will be\n * interpreted and executed as a script by a browser, e.g. when calling eval.\n */\n\n\nfunction trustedScriptFromString(script) {\n return getPolicy$1()?.createScript(script) || script;\n}\n/**\n * Unsafely promote a string to a TrustedScriptURL, falling back to strings\n * when Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will cause a browser to load and execute a resource, e.g. when\n * assigning to script.src.\n */\n\n\nfunction trustedScriptURLFromString(url) {\n return getPolicy$1()?.createScriptURL(url) || url;\n}\n/**\n * Unsafely call the Function constructor with the given string arguments. It\n * is only available in development mode, and should be stripped out of\n * production code.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only called from development code, as use in production code can lead to\n * XSS vulnerabilities.\n */\n\n\nfunction newTrustedFunctionForDev(...args) {\n if (typeof ngDevMode === 'undefined') {\n throw new Error('newTrustedFunctionForDev should never be called in production');\n }\n\n if (!_global.trustedTypes) {\n // In environments that don't support Trusted Types, fall back to the most\n // straightforward implementation:\n return new Function(...args);\n } // Chrome currently does not support passing TrustedScript to the Function\n // constructor. The following implements the workaround proposed on the page\n // below, where the Chromium bug is also referenced:\n // https://github.com/w3c/webappsec-trusted-types/wiki/Trusted-Types-for-function-constructor\n\n\n const fnArgs = args.slice(0, -1).join(',');\n const fnBody = args[args.length - 1];\n const body = `(function anonymous(${fnArgs}\n) { ${fnBody}\n})`; // Using eval directly confuses the compiler and prevents this module from\n // being stripped out of JS binaries even if not used. The global['eval']\n // indirection fixes that.\n\n const fn = _global['eval'](trustedScriptFromString(body));\n\n if (fn.bind === undefined) {\n // Workaround for a browser bug that only exists in Chrome 83, where passing\n // a TrustedScript to eval just returns the TrustedScript back without\n // evaluating it. In that case, fall back to the most straightforward\n // implementation:\n return new Function(...args);\n } // To completely mimic the behavior of calling \"new Function\", two more\n // things need to happen:\n // 1. Stringifying the resulting function should return its source code\n\n\n fn.toString = () => body; // 2. When calling the resulting function, `this` should refer to `global`\n\n\n return fn.bind(_global); // When Trusted Types support in Function constructors is widely available,\n // the implementation of this function can be simplified to:\n // return new Function(...args.map(a => trustedScriptFromString(a)));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The Trusted Types policy, or null if Trusted Types are not\n * enabled/supported, or undefined if the policy has not been created yet.\n */\n\n\nlet policy;\n/**\n * Returns the Trusted Types policy, or null if Trusted Types are not\n * enabled/supported. The first call to this function will create the policy.\n */\n\nfunction getPolicy() {\n if (policy === undefined) {\n policy = null;\n\n if (_global.trustedTypes) {\n try {\n policy = _global.trustedTypes.createPolicy('angular#unsafe-bypass', {\n createHTML: s => s,\n createScript: s => s,\n createScriptURL: s => s\n });\n } catch {// trustedTypes.createPolicy throws if called with a name that is\n // already registered, even in report-only mode. Until the API changes,\n // catch the error not to break the applications functionally. In such\n // cases, the code will fall back to using strings.\n }\n }\n }\n\n return policy;\n}\n/**\n * Unsafely promote a string to a TrustedHTML, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\n\n\nfunction trustedHTMLFromStringBypass(html) {\n return getPolicy()?.createHTML(html) || html;\n}\n/**\n * Unsafely promote a string to a TrustedScript, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\n\n\nfunction trustedScriptFromStringBypass(script) {\n return getPolicy()?.createScript(script) || script;\n}\n/**\n * Unsafely promote a string to a TrustedScriptURL, falling back to strings\n * when Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\n\n\nfunction trustedScriptURLFromStringBypass(url) {\n return getPolicy()?.createScriptURL(url) || url;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nclass SafeValueImpl {\n constructor(changingThisBreaksApplicationSecurity) {\n this.changingThisBreaksApplicationSecurity = changingThisBreaksApplicationSecurity;\n }\n\n toString() {\n return `SafeValue must use [property]=binding: ${this.changingThisBreaksApplicationSecurity}` + ` (see https://g.co/ng/security#xss)`;\n }\n\n}\n\nclass SafeHtmlImpl extends SafeValueImpl {\n getTypeName() {\n return \"HTML\"\n /* BypassType.Html */\n ;\n }\n\n}\n\nclass SafeStyleImpl extends SafeValueImpl {\n getTypeName() {\n return \"Style\"\n /* BypassType.Style */\n ;\n }\n\n}\n\nclass SafeScriptImpl extends SafeValueImpl {\n getTypeName() {\n return \"Script\"\n /* BypassType.Script */\n ;\n }\n\n}\n\nclass SafeUrlImpl extends SafeValueImpl {\n getTypeName() {\n return \"URL\"\n /* BypassType.Url */\n ;\n }\n\n}\n\nclass SafeResourceUrlImpl extends SafeValueImpl {\n getTypeName() {\n return \"ResourceURL\"\n /* BypassType.ResourceUrl */\n ;\n }\n\n}\n\nfunction unwrapSafeValue(value) {\n return value instanceof SafeValueImpl ? value.changingThisBreaksApplicationSecurity : value;\n}\n\nfunction allowSanitizationBypassAndThrow(value, type) {\n const actualType = getSanitizationBypassType(value);\n\n if (actualType != null && actualType !== type) {\n // Allow ResourceURLs in URL contexts, they are strictly more trusted.\n if (actualType === \"ResourceURL\"\n /* BypassType.ResourceUrl */\n && type === \"URL\"\n /* BypassType.Url */\n ) return true;\n throw new Error(`Required a safe ${type}, got a ${actualType} (see https://g.co/ng/security#xss)`);\n }\n\n return actualType === type;\n}\n\nfunction getSanitizationBypassType(value) {\n return value instanceof SafeValueImpl && value.getTypeName() || null;\n}\n/**\n * Mark `html` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link htmlSanitizer} to be trusted implicitly.\n *\n * @param trustedHtml `html` string which needs to be implicitly trusted.\n * @returns a `html` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustHtml(trustedHtml) {\n return new SafeHtmlImpl(trustedHtml);\n}\n/**\n * Mark `style` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link styleSanitizer} to be trusted implicitly.\n *\n * @param trustedStyle `style` string which needs to be implicitly trusted.\n * @returns a `style` hich has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustStyle(trustedStyle) {\n return new SafeStyleImpl(trustedStyle);\n}\n/**\n * Mark `script` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link scriptSanitizer} to be trusted implicitly.\n *\n * @param trustedScript `script` string which needs to be implicitly trusted.\n * @returns a `script` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustScript(trustedScript) {\n return new SafeScriptImpl(trustedScript);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link urlSanitizer} to be trusted implicitly.\n *\n * @param trustedUrl `url` string which needs to be implicitly trusted.\n * @returns a `url` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustUrl(trustedUrl) {\n return new SafeUrlImpl(trustedUrl);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link resourceUrlSanitizer} to be trusted implicitly.\n *\n * @param trustedResourceUrl `url` string which needs to be implicitly trusted.\n * @returns a `url` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustResourceUrl(trustedResourceUrl) {\n return new SafeResourceUrlImpl(trustedResourceUrl);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This helper is used to get hold of an inert tree of DOM elements containing dirty HTML\n * that needs sanitizing.\n * Depending upon browser support we use one of two strategies for doing this.\n * Default: DOMParser strategy\n * Fallback: InertDocument strategy\n */\n\n\nfunction getInertBodyHelper(defaultDoc) {\n const inertDocumentHelper = new InertDocumentHelper(defaultDoc);\n return isDOMParserAvailable() ? new DOMParserHelper(inertDocumentHelper) : inertDocumentHelper;\n}\n/**\n * Uses DOMParser to create and fill an inert body element.\n * This is the default strategy used in browsers that support it.\n */\n\n\nclass DOMParserHelper {\n constructor(inertDocumentHelper) {\n this.inertDocumentHelper = inertDocumentHelper;\n }\n\n getInertBodyElement(html) {\n // We add these extra elements to ensure that the rest of the content is parsed as expected\n // e.g. leading whitespace is maintained and tags like `` do not get hoisted to the\n // `` tag. Note that the `` tag is closed implicitly to prevent unclosed tags\n // in `html` from consuming the otherwise explicit `` tag.\n html = '' + html;\n\n try {\n const body = new window.DOMParser().parseFromString(trustedHTMLFromString(html), 'text/html').body;\n\n if (body === null) {\n // In some browsers (e.g. Mozilla/5.0 iPad AppleWebKit Mobile) the `body` property only\n // becomes available in the following tick of the JS engine. In that case we fall back to\n // the `inertDocumentHelper` instead.\n return this.inertDocumentHelper.getInertBodyElement(html);\n }\n\n body.removeChild(body.firstChild);\n return body;\n } catch {\n return null;\n }\n }\n\n}\n/**\n * Use an HTML5 `template` element, if supported, or an inert body element created via\n * `createHtmlDocument` to create and fill an inert DOM element.\n * This is the fallback strategy if the browser does not support DOMParser.\n */\n\n\nclass InertDocumentHelper {\n constructor(defaultDoc) {\n this.defaultDoc = defaultDoc;\n this.inertDocument = this.defaultDoc.implementation.createHTMLDocument('sanitization-inert');\n\n if (this.inertDocument.body == null) {\n // usually there should be only one body element in the document, but IE doesn't have any, so\n // we need to create one.\n const inertHtml = this.inertDocument.createElement('html');\n this.inertDocument.appendChild(inertHtml);\n const inertBodyElement = this.inertDocument.createElement('body');\n inertHtml.appendChild(inertBodyElement);\n }\n }\n\n getInertBodyElement(html) {\n // Prefer using element if supported.\n const templateEl = this.inertDocument.createElement('template');\n\n if ('content' in templateEl) {\n templateEl.innerHTML = trustedHTMLFromString(html);\n return templateEl;\n } // Note that previously we used to do something like `this.inertDocument.body.innerHTML = html`\n // and we returned the inert `body` node. This was changed, because IE seems to treat setting\n // `innerHTML` on an inserted element differently, compared to one that hasn't been inserted\n // yet. In particular, IE appears to split some of the text into multiple text nodes rather\n // than keeping them in a single one which ends up messing with Ivy's i18n parsing further\n // down the line. This has been worked around by creating a new inert `body` and using it as\n // the root node in which we insert the HTML.\n\n\n const inertBody = this.inertDocument.createElement('body');\n inertBody.innerHTML = trustedHTMLFromString(html); // Support: IE 11 only\n // strip custom-namespaced attributes on IE<=11\n\n if (this.defaultDoc.documentMode) {\n this.stripCustomNsAttrs(inertBody);\n }\n\n return inertBody;\n }\n /**\n * When IE11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1'\n * attribute to declare ns1 namespace and prefixes the attribute with 'ns1' (e.g.\n * 'ns1:xlink:foo').\n *\n * This is undesirable since we don't want to allow any of these custom attributes. This method\n * strips them all.\n */\n\n\n stripCustomNsAttrs(el) {\n const elAttrs = el.attributes; // loop backwards so that we can support removals.\n\n for (let i = elAttrs.length - 1; 0 < i; i--) {\n const attrib = elAttrs.item(i);\n const attrName = attrib.name;\n\n if (attrName === 'xmlns:ns1' || attrName.indexOf('ns1:') === 0) {\n el.removeAttribute(attrName);\n }\n }\n\n let childNode = el.firstChild;\n\n while (childNode) {\n if (childNode.nodeType === Node.ELEMENT_NODE) this.stripCustomNsAttrs(childNode);\n childNode = childNode.nextSibling;\n }\n }\n\n}\n/**\n * We need to determine whether the DOMParser exists in the global context and\n * supports parsing HTML; HTML parsing support is not as wide as other formats, see\n * https://developer.mozilla.org/en-US/docs/Web/API/DOMParser#Browser_compatibility.\n *\n * @suppress {uselessCode}\n */\n\n\nfunction isDOMParserAvailable() {\n try {\n return !!new window.DOMParser().parseFromString(trustedHTMLFromString(''), 'text/html');\n } catch {\n return false;\n }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A pattern that recognizes a commonly useful subset of URLs that are safe.\n *\n * This regular expression matches a subset of URLs that will not cause script\n * execution if used in URL context within a HTML document. Specifically, this\n * regular expression matches if (comment from here on and regex copied from\n * Soy's EscapingConventions):\n * (1) Either an allowed protocol (http, https, mailto or ftp).\n * (2) or no protocol. A protocol must be followed by a colon. The below\n * allows that by allowing colons only after one of the characters [/?#].\n * A colon after a hash (#) must be in the fragment.\n * Otherwise, a colon after a (?) must be in a query.\n * Otherwise, a colon after a single solidus (/) must be in a path.\n * Otherwise, a colon after a double solidus (//) must be in the authority\n * (before port).\n *\n * The pattern disallows &, used in HTML entity declarations before\n * one of the characters in [/?#]. This disallows HTML entities used in the\n * protocol name, which should never happen, e.g. \"http\" for \"http\".\n * It also disallows HTML entities in the first path part of a relative path,\n * e.g. \"foo<bar/baz\". Our existing escaping functions should not produce\n * that. More importantly, it disallows masking of a colon,\n * e.g. \"javascript:...\".\n *\n * This regular expression was taken from the Closure sanitization library.\n */\n\n\nconst SAFE_URL_PATTERN = /^(?:(?:https?|mailto|data|ftp|tel|file|sms):|[^&:/?#]*(?:[/?#]|$))/gi;\n\nfunction _sanitizeUrl(url) {\n url = String(url);\n if (url.match(SAFE_URL_PATTERN)) return url;\n\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n console.warn(`WARNING: sanitizing unsafe URL value ${url} (see https://g.co/ng/security#xss)`);\n }\n\n return 'unsafe:' + url;\n}\n\nfunction sanitizeSrcset(srcset) {\n srcset = String(srcset);\n return srcset.split(',').map(srcset => _sanitizeUrl(srcset.trim())).join(', ');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction tagSet(tags) {\n const res = {};\n\n for (const t of tags.split(',')) res[t] = true;\n\n return res;\n}\n\nfunction merge(...sets) {\n const res = {};\n\n for (const s of sets) {\n for (const v in s) {\n if (s.hasOwnProperty(v)) res[v] = true;\n }\n }\n\n return res;\n} // Good source of info about elements and attributes\n// https://html.spec.whatwg.org/#semantics\n// https://simon.html5.org/html-elements\n// Safe Void Elements - HTML5\n// https://html.spec.whatwg.org/#void-elements\n\n\nconst VOID_ELEMENTS = tagSet('area,br,col,hr,img,wbr'); // Elements that you can, intentionally, leave open (and which close themselves)\n// https://html.spec.whatwg.org/#optional-tags\n\nconst OPTIONAL_END_TAG_BLOCK_ELEMENTS = tagSet('colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr');\nconst OPTIONAL_END_TAG_INLINE_ELEMENTS = tagSet('rp,rt');\nconst OPTIONAL_END_TAG_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, OPTIONAL_END_TAG_BLOCK_ELEMENTS); // Safe Block Elements - HTML5\n\nconst BLOCK_ELEMENTS = merge(OPTIONAL_END_TAG_BLOCK_ELEMENTS, tagSet('address,article,' + 'aside,blockquote,caption,center,del,details,dialog,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5,' + 'h6,header,hgroup,hr,ins,main,map,menu,nav,ol,pre,section,summary,table,ul')); // Inline Elements - HTML5\n\nconst INLINE_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, tagSet('a,abbr,acronym,audio,b,' + 'bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,picture,q,ruby,rp,rt,s,' + 'samp,small,source,span,strike,strong,sub,sup,time,track,tt,u,var,video'));\nconst VALID_ELEMENTS = merge(VOID_ELEMENTS, BLOCK_ELEMENTS, INLINE_ELEMENTS, OPTIONAL_END_TAG_ELEMENTS); // Attributes that have href and hence need to be sanitized\n\nconst URI_ATTRS = tagSet('background,cite,href,itemtype,longdesc,poster,src,xlink:href'); // Attributes that have special href set hence need to be sanitized\n\nconst SRCSET_ATTRS = tagSet('srcset');\nconst HTML_ATTRS = tagSet('abbr,accesskey,align,alt,autoplay,axis,bgcolor,border,cellpadding,cellspacing,class,clear,color,cols,colspan,' + 'compact,controls,coords,datetime,default,dir,download,face,headers,height,hidden,hreflang,hspace,' + 'ismap,itemscope,itemprop,kind,label,lang,language,loop,media,muted,nohref,nowrap,open,preload,rel,rev,role,rows,rowspan,rules,' + 'scope,scrolling,shape,size,sizes,span,srclang,start,summary,tabindex,target,title,translate,type,usemap,' + 'valign,value,vspace,width'); // Accessibility attributes as per WAI-ARIA 1.1 (W3C Working Draft 14 December 2018)\n\nconst ARIA_ATTRS = tagSet('aria-activedescendant,aria-atomic,aria-autocomplete,aria-busy,aria-checked,aria-colcount,aria-colindex,' + 'aria-colspan,aria-controls,aria-current,aria-describedby,aria-details,aria-disabled,aria-dropeffect,' + 'aria-errormessage,aria-expanded,aria-flowto,aria-grabbed,aria-haspopup,aria-hidden,aria-invalid,' + 'aria-keyshortcuts,aria-label,aria-labelledby,aria-level,aria-live,aria-modal,aria-multiline,' + 'aria-multiselectable,aria-orientation,aria-owns,aria-placeholder,aria-posinset,aria-pressed,aria-readonly,' + 'aria-relevant,aria-required,aria-roledescription,aria-rowcount,aria-rowindex,aria-rowspan,aria-selected,' + 'aria-setsize,aria-sort,aria-valuemax,aria-valuemin,aria-valuenow,aria-valuetext'); // NB: This currently consciously doesn't support SVG. SVG sanitization has had several security\n// issues in the past, so it seems safer to leave it out if possible. If support for binding SVG via\n// innerHTML is required, SVG attributes should be added here.\n// NB: Sanitization does not allow