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/@angular/material/fesm2022/snack-bar.mjs","src/app/material/material.module.ts"],"sourcesContent":["/**\n * @license Angular v17.2.4\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\n/**\n * The default equality function used for `signal` and `computed`, which uses referential equality.\n */\nfunction defaultEquals(a, b) {\n return Object.is(a, b);\n}\n\n/**\n * The currently active consumer `ReactiveNode`, if running code in a reactive context.\n *\n * Change this via `setActiveConsumer`.\n */\nlet activeConsumer = null;\nlet inNotificationPhase = false;\n/**\n * Global epoch counter. Incremented whenever a source signal is set.\n */\nlet epoch = 1;\n/**\n * Symbol used to tell `Signal`s apart from other functions.\n *\n * This can be used to auto-unwrap signals in various cases, or to auto-wrap non-signal values.\n */\nconst SIGNAL = /* @__PURE__ */Symbol('SIGNAL');\nfunction setActiveConsumer(consumer) {\n const prev = activeConsumer;\n activeConsumer = consumer;\n return prev;\n}\nfunction getActiveConsumer() {\n return activeConsumer;\n}\nfunction isInNotificationPhase() {\n return inNotificationPhase;\n}\nfunction isReactive(value) {\n return value[SIGNAL] !== undefined;\n}\nconst REACTIVE_NODE = {\n version: 0,\n lastCleanEpoch: 0,\n dirty: false,\n producerNode: undefined,\n producerLastReadVersion: undefined,\n producerIndexOfThis: undefined,\n nextProducerIndex: 0,\n liveConsumerNode: undefined,\n liveConsumerIndexOfThis: undefined,\n consumerAllowSignalWrites: false,\n consumerIsAlwaysLive: false,\n producerMustRecompute: () => false,\n producerRecomputeValue: () => {},\n consumerMarkedDirty: () => {},\n consumerOnSignalRead: () => {}\n};\n/**\n * Called by implementations when a producer's signal is read.\n */\nfunction producerAccessed(node) {\n if (inNotificationPhase) {\n throw new Error(typeof ngDevMode !== 'undefined' && ngDevMode ? `Assertion error: signal read during notification phase` : '');\n }\n if (activeConsumer === null) {\n // Accessed outside of a reactive context, so nothing to record.\n return;\n }\n activeConsumer.consumerOnSignalRead(node);\n // This producer is the `idx`th dependency of `activeConsumer`.\n const idx = activeConsumer.nextProducerIndex++;\n assertConsumerNode(activeConsumer);\n if (idx < activeConsumer.producerNode.length && activeConsumer.producerNode[idx] !== node) {\n // There's been a change in producers since the last execution of `activeConsumer`.\n // `activeConsumer.producerNode[idx]` holds a stale dependency which will be be removed and\n // replaced with `this`.\n //\n // If `activeConsumer` isn't live, then this is a no-op, since we can replace the producer in\n // `activeConsumer.producerNode` directly. However, if `activeConsumer` is live, then we need\n // to remove it from the stale producer's `liveConsumer`s.\n if (consumerIsLive(activeConsumer)) {\n const staleProducer = activeConsumer.producerNode[idx];\n producerRemoveLiveConsumerAtIndex(staleProducer, activeConsumer.producerIndexOfThis[idx]);\n // At this point, the only record of `staleProducer` is the reference at\n // `activeConsumer.producerNode[idx]` which will be overwritten below.\n }\n }\n if (activeConsumer.producerNode[idx] !== node) {\n // We're a new dependency of the consumer (at `idx`).\n activeConsumer.producerNode[idx] = node;\n // If the active consumer is live, then add it as a live consumer. If not, then use 0 as a\n // placeholder value.\n activeConsumer.producerIndexOfThis[idx] = consumerIsLive(activeConsumer) ? producerAddLiveConsumer(node, activeConsumer, idx) : 0;\n }\n activeConsumer.producerLastReadVersion[idx] = node.version;\n}\n/**\n * Increment the global epoch counter.\n *\n * Called by source producers (that is, not computeds) whenever their values change.\n */\nfunction producerIncrementEpoch() {\n epoch++;\n}\n/**\n * Ensure this producer's `version` is up-to-date.\n */\nfunction producerUpdateValueVersion(node) {\n if (consumerIsLive(node) && !node.dirty) {\n // A live consumer will be marked dirty by producers, so a clean state means that its version\n // is guaranteed to be up-to-date.\n return;\n }\n if (!node.dirty && node.lastCleanEpoch === epoch) {\n // Even non-live consumers can skip polling if they previously found themselves to be clean at\n // the current epoch, since their dependencies could not possibly have changed (such a change\n // would've increased the epoch).\n return;\n }\n if (!node.producerMustRecompute(node) && !consumerPollProducersForChange(node)) {\n // None of our producers report a change since the last time they were read, so no\n // recomputation of our value is necessary, and we can consider ourselves clean.\n node.dirty = false;\n node.lastCleanEpoch = epoch;\n return;\n }\n node.producerRecomputeValue(node);\n // After recomputing the value, we're no longer dirty.\n node.dirty = false;\n node.lastCleanEpoch = epoch;\n}\n/**\n * Propagate a dirty notification to live consumers of this producer.\n */\nfunction producerNotifyConsumers(node) {\n if (node.liveConsumerNode === undefined) {\n return;\n }\n // Prevent signal reads when we're updating the graph\n const prev = inNotificationPhase;\n inNotificationPhase = true;\n try {\n for (const consumer of node.liveConsumerNode) {\n if (!consumer.dirty) {\n consumerMarkDirty(consumer);\n }\n }\n } finally {\n inNotificationPhase = prev;\n }\n}\n/**\n * Whether this `ReactiveNode` in its producer capacity is currently allowed to initiate updates,\n * based on the current consumer context.\n */\nfunction producerUpdatesAllowed() {\n return activeConsumer?.consumerAllowSignalWrites !== false;\n}\nfunction consumerMarkDirty(node) {\n node.dirty = true;\n producerNotifyConsumers(node);\n node.consumerMarkedDirty?.(node);\n}\n/**\n * Prepare this consumer to run a computation in its reactive context.\n *\n * Must be called by subclasses which represent reactive computations, before those computations\n * begin.\n */\nfunction consumerBeforeComputation(node) {\n node && (node.nextProducerIndex = 0);\n return setActiveConsumer(node);\n}\n/**\n * Finalize this consumer's state after a reactive computation has run.\n *\n * Must be called by subclasses which represent reactive computations, after those computations\n * have finished.\n */\nfunction consumerAfterComputation(node, prevConsumer) {\n setActiveConsumer(prevConsumer);\n if (!node || node.producerNode === undefined || node.producerIndexOfThis === undefined || node.producerLastReadVersion === undefined) {\n return;\n }\n if (consumerIsLive(node)) {\n // For live consumers, we need to remove the producer -> consumer edge for any stale producers\n // which weren't dependencies after the recomputation.\n for (let i = node.nextProducerIndex; i < node.producerNode.length; i++) {\n producerRemoveLiveConsumerAtIndex(node.producerNode[i], node.producerIndexOfThis[i]);\n }\n }\n // Truncate the producer tracking arrays.\n // Perf note: this is essentially truncating the length to `node.nextProducerIndex`, but\n // benchmarking has shown that individual pop operations are faster.\n while (node.producerNode.length > node.nextProducerIndex) {\n node.producerNode.pop();\n node.producerLastReadVersion.pop();\n node.producerIndexOfThis.pop();\n }\n}\n/**\n * Determine whether this consumer has any dependencies which have changed since the last time\n * they were read.\n */\nfunction consumerPollProducersForChange(node) {\n assertConsumerNode(node);\n // Poll producers for change.\n for (let i = 0; i < node.producerNode.length; i++) {\n const producer = node.producerNode[i];\n const seenVersion = node.producerLastReadVersion[i];\n // First check the versions. A mismatch means that the producer's value is known to have\n // changed since the last time we read it.\n if (seenVersion !== producer.version) {\n return true;\n }\n // The producer's version is the same as the last time we read it, but it might itself be\n // stale. Force the producer to recompute its version (calculating a new value if necessary).\n producerUpdateValueVersion(producer);\n // Now when we do this check, `producer.version` is guaranteed to be up to date, so if the\n // versions still match then it has not changed since the last time we read it.\n if (seenVersion !== producer.version) {\n return true;\n }\n }\n return false;\n}\n/**\n * Disconnect this consumer from the graph.\n */\nfunction consumerDestroy(node) {\n assertConsumerNode(node);\n if (consumerIsLive(node)) {\n // Drop all connections from the graph to this node.\n for (let i = 0; i < node.producerNode.length; i++) {\n producerRemoveLiveConsumerAtIndex(node.producerNode[i], node.producerIndexOfThis[i]);\n }\n }\n // Truncate all the arrays to drop all connection from this node to the graph.\n node.producerNode.length = node.producerLastReadVersion.length = node.producerIndexOfThis.length = 0;\n if (node.liveConsumerNode) {\n node.liveConsumerNode.length = node.liveConsumerIndexOfThis.length = 0;\n }\n}\n/**\n * Add `consumer` as a live consumer of this node.\n *\n * Note that this operation is potentially transitive. If this node becomes live, then it becomes\n * a live consumer of all of its current producers.\n */\nfunction producerAddLiveConsumer(node, consumer, indexOfThis) {\n assertProducerNode(node);\n assertConsumerNode(node);\n if (node.liveConsumerNode.length === 0) {\n // When going from 0 to 1 live consumers, we become a live consumer to our producers.\n for (let i = 0; i < node.producerNode.length; i++) {\n node.producerIndexOfThis[i] = producerAddLiveConsumer(node.producerNode[i], node, i);\n }\n }\n node.liveConsumerIndexOfThis.push(indexOfThis);\n return node.liveConsumerNode.push(consumer) - 1;\n}\n/**\n * Remove the live consumer at `idx`.\n */\nfunction producerRemoveLiveConsumerAtIndex(node, idx) {\n assertProducerNode(node);\n assertConsumerNode(node);\n if (typeof ngDevMode !== 'undefined' && ngDevMode && idx >= node.liveConsumerNode.length) {\n throw new Error(`Assertion error: active consumer index ${idx} is out of bounds of ${node.liveConsumerNode.length} consumers)`);\n }\n if (node.liveConsumerNode.length === 1) {\n // When removing the last live consumer, we will no longer be live. We need to remove\n // ourselves from our producers' tracking (which may cause consumer-producers to lose\n // liveness as well).\n for (let i = 0; i < node.producerNode.length; i++) {\n producerRemoveLiveConsumerAtIndex(node.producerNode[i], node.producerIndexOfThis[i]);\n }\n }\n // Move the last value of `liveConsumers` into `idx`. Note that if there's only a single\n // live consumer, this is a no-op.\n const lastIdx = node.liveConsumerNode.length - 1;\n node.liveConsumerNode[idx] = node.liveConsumerNode[lastIdx];\n node.liveConsumerIndexOfThis[idx] = node.liveConsumerIndexOfThis[lastIdx];\n // Truncate the array.\n node.liveConsumerNode.length--;\n node.liveConsumerIndexOfThis.length--;\n // If the index is still valid, then we need to fix the index pointer from the producer to this\n // consumer, and update it from `lastIdx` to `idx` (accounting for the move above).\n if (idx < node.liveConsumerNode.length) {\n const idxProducer = node.liveConsumerIndexOfThis[idx];\n const consumer = node.liveConsumerNode[idx];\n assertConsumerNode(consumer);\n consumer.producerIndexOfThis[idxProducer] = idx;\n }\n}\nfunction consumerIsLive(node) {\n return node.consumerIsAlwaysLive || (node?.liveConsumerNode?.length ?? 0) > 0;\n}\nfunction assertConsumerNode(node) {\n node.producerNode ??= [];\n node.producerIndexOfThis ??= [];\n node.producerLastReadVersion ??= [];\n}\nfunction assertProducerNode(node) {\n node.liveConsumerNode ??= [];\n node.liveConsumerIndexOfThis ??= [];\n}\n\n/**\n * Create a computed signal which derives a reactive value from an expression.\n */\nfunction createComputed(computation) {\n const node = Object.create(COMPUTED_NODE);\n node.computation = computation;\n const computed = () => {\n // Check if the value needs updating before returning it.\n producerUpdateValueVersion(node);\n // Record that someone looked at this signal.\n producerAccessed(node);\n if (node.value === ERRORED) {\n throw node.error;\n }\n return node.value;\n };\n computed[SIGNAL] = node;\n return computed;\n}\n/**\n * A dedicated symbol used before a computed value has been calculated for the first time.\n * Explicitly typed as `any` so we can use it as signal's value.\n */\nconst UNSET = /* @__PURE__ */Symbol('UNSET');\n/**\n * A dedicated symbol used in place of a computed signal value to indicate that a given computation\n * is in progress. Used to detect cycles in computation chains.\n * Explicitly typed as `any` so we can use it as signal's value.\n */\nconst COMPUTING = /* @__PURE__ */Symbol('COMPUTING');\n/**\n * A dedicated symbol used in place of a computed signal value to indicate that a given computation\n * failed. The thrown error is cached until the computation gets dirty again.\n * Explicitly typed as `any` so we can use it as signal's value.\n */\nconst ERRORED = /* @__PURE__ */Symbol('ERRORED');\n// Note: Using an IIFE here to ensure that the spread assignment is not considered\n// a side-effect, ending up preserving `COMPUTED_NODE` and `REACTIVE_NODE`.\n// TODO: remove when https://github.com/evanw/esbuild/issues/3392 is resolved.\nconst COMPUTED_NODE = /* @__PURE__ */(() => {\n return {\n ...REACTIVE_NODE,\n value: UNSET,\n dirty: true,\n error: null,\n equal: defaultEquals,\n producerMustRecompute(node) {\n // Force a recomputation if there's no current value, or if the current value is in the\n // process of being calculated (which should throw an error).\n return node.value === UNSET || node.value === COMPUTING;\n },\n producerRecomputeValue(node) {\n if (node.value === COMPUTING) {\n // Our computation somehow led to a cyclic read of itself.\n throw new Error('Detected cycle in computations.');\n }\n const oldValue = node.value;\n node.value = COMPUTING;\n const prevConsumer = consumerBeforeComputation(node);\n let newValue;\n try {\n newValue = node.computation();\n } catch (err) {\n newValue = ERRORED;\n node.error = err;\n } finally {\n consumerAfterComputation(node, prevConsumer);\n }\n if (oldValue !== UNSET && oldValue !== ERRORED && newValue !== ERRORED && node.equal(oldValue, newValue)) {\n // No change to `valueVersion` - old and new values are\n // semantically equivalent.\n node.value = oldValue;\n return;\n }\n node.value = newValue;\n node.version++;\n }\n };\n})();\nfunction defaultThrowError() {\n throw new Error();\n}\nlet throwInvalidWriteToSignalErrorFn = defaultThrowError;\nfunction throwInvalidWriteToSignalError() {\n throwInvalidWriteToSignalErrorFn();\n}\nfunction setThrowInvalidWriteToSignalError(fn) {\n throwInvalidWriteToSignalErrorFn = fn;\n}\n\n/**\n * If set, called after `WritableSignal`s are updated.\n *\n * This hook can be used to achieve various effects, such as running effects synchronously as part\n * of setting a signal.\n */\nlet postSignalSetFn = null;\n/**\n * Create a `Signal` that can be set or updated directly.\n */\nfunction createSignal(initialValue) {\n const node = Object.create(SIGNAL_NODE);\n node.value = initialValue;\n const getter = () => {\n producerAccessed(node);\n return node.value;\n };\n getter[SIGNAL] = node;\n return getter;\n}\nfunction setPostSignalSetFn(fn) {\n const prev = postSignalSetFn;\n postSignalSetFn = fn;\n return prev;\n}\nfunction signalGetFn() {\n producerAccessed(this);\n return this.value;\n}\nfunction signalSetFn(node, newValue) {\n if (!producerUpdatesAllowed()) {\n throwInvalidWriteToSignalError();\n }\n if (!node.equal(node.value, newValue)) {\n node.value = newValue;\n signalValueChanged(node);\n }\n}\nfunction signalUpdateFn(node, updater) {\n if (!producerUpdatesAllowed()) {\n throwInvalidWriteToSignalError();\n }\n signalSetFn(node, updater(node.value));\n}\n// Note: Using an IIFE here to ensure that the spread assignment is not considered\n// a side-effect, ending up preserving `COMPUTED_NODE` and `REACTIVE_NODE`.\n// TODO: remove when https://github.com/evanw/esbuild/issues/3392 is resolved.\nconst SIGNAL_NODE = /* @__PURE__ */(() => {\n return {\n ...REACTIVE_NODE,\n equal: defaultEquals,\n value: undefined\n };\n})();\nfunction signalValueChanged(node) {\n node.version++;\n producerIncrementEpoch();\n producerNotifyConsumers(node);\n postSignalSetFn?.();\n}\nfunction createWatch(fn, schedule, allowSignalWrites) {\n const node = Object.create(WATCH_NODE);\n if (allowSignalWrites) {\n node.consumerAllowSignalWrites = true;\n }\n node.fn = fn;\n node.schedule = schedule;\n const registerOnCleanup = cleanupFn => {\n node.cleanupFn = cleanupFn;\n };\n function isWatchNodeDestroyed(node) {\n return node.fn === null && node.schedule === null;\n }\n function destroyWatchNode(node) {\n if (!isWatchNodeDestroyed(node)) {\n consumerDestroy(node); // disconnect watcher from the reactive graph\n node.cleanupFn();\n // nullify references to the integration functions to mark node as destroyed\n node.fn = null;\n node.schedule = null;\n node.cleanupFn = NOOP_CLEANUP_FN;\n }\n }\n const run = () => {\n if (node.fn === null) {\n // trying to run a destroyed watch is noop\n return;\n }\n if (isInNotificationPhase()) {\n throw new Error(`Schedulers cannot synchronously execute watches while scheduling.`);\n }\n node.dirty = false;\n if (node.hasRun && !consumerPollProducersForChange(node)) {\n return;\n }\n node.hasRun = true;\n const prevConsumer = consumerBeforeComputation(node);\n try {\n node.cleanupFn();\n node.cleanupFn = NOOP_CLEANUP_FN;\n node.fn(registerOnCleanup);\n } finally {\n consumerAfterComputation(node, prevConsumer);\n }\n };\n node.ref = {\n notify: () => consumerMarkDirty(node),\n run,\n cleanup: () => node.cleanupFn(),\n destroy: () => destroyWatchNode(node),\n [SIGNAL]: node\n };\n return node.ref;\n}\nconst NOOP_CLEANUP_FN = () => {};\n// Note: Using an IIFE here to ensure that the spread assignment is not considered\n// a side-effect, ending up preserving `COMPUTED_NODE` and `REACTIVE_NODE`.\n// TODO: remove when https://github.com/evanw/esbuild/issues/3392 is resolved.\nconst WATCH_NODE = /* @__PURE__ */(() => {\n return {\n ...REACTIVE_NODE,\n consumerIsAlwaysLive: true,\n consumerAllowSignalWrites: false,\n consumerMarkedDirty: node => {\n if (node.schedule !== null) {\n node.schedule(node.ref);\n }\n },\n hasRun: false,\n cleanupFn: NOOP_CLEANUP_FN\n };\n})();\nfunction setAlternateWeakRefImpl(impl) {\n // TODO: remove this function\n}\nexport { REACTIVE_NODE, SIGNAL, SIGNAL_NODE, consumerAfterComputation, consumerBeforeComputation, consumerDestroy, consumerMarkDirty, consumerPollProducersForChange, createComputed, createSignal, createWatch, defaultEquals, getActiveConsumer, isInNotificationPhase, isReactive, producerAccessed, producerNotifyConsumers, producerUpdateValueVersion, producerUpdatesAllowed, setActiveConsumer, setAlternateWeakRefImpl, setPostSignalSetFn, setThrowInvalidWriteToSignalError, signalSetFn, signalUpdateFn };\n","export function isFunction(value) {\n return typeof value === 'function';\n}\n","export function createErrorClass(createImpl) {\n const _super = instance => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n","import { createErrorClass } from './createErrorClass';\nexport const UnsubscriptionError = createErrorClass(_super => function UnsubscriptionErrorImpl(errors) {\n _super(this);\n this.message = errors ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}` : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n});\n","export function arrRemove(arr, item) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n","import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { arrRemove } from './util/arrRemove';\nexport class Subscription {\n constructor(initialTeardown) {\n this.initialTeardown = initialTeardown;\n this.closed = false;\n this._parentage = null;\n this._finalizers = null;\n }\n unsubscribe() {\n let errors;\n if (!this.closed) {\n this.closed = true;\n const {\n _parentage\n } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n const {\n initialTeardown: initialFinalizer\n } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n const {\n _finalizers\n } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors !== null && errors !== void 0 ? errors : [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n add(teardown) {\n var _a;\n if (teardown && teardown !== this) {\n if (this.closed) {\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = (_a = this._finalizers) !== null && _a !== void 0 ? _a : []).push(teardown);\n }\n }\n }\n _hasParent(parent) {\n const {\n _parentage\n } = this;\n return _parentage === parent || Array.isArray(_parentage) && _parentage.includes(parent);\n }\n _addParent(parent) {\n const {\n _parentage\n } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n _removeParent(parent) {\n const {\n _parentage\n } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n remove(teardown) {\n const {\n _finalizers\n } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\nSubscription.EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n})();\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\nexport function isSubscription(value) {\n return value instanceof Subscription || value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe);\n}\nfunction execFinalizer(finalizer) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n","export const config = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false\n};\n","export const timeoutProvider = {\n setTimeout(handler, timeout, ...args) {\n const {\n delegate\n } = timeoutProvider;\n if (delegate === null || delegate === void 0 ? void 0 : delegate.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const {\n delegate\n } = timeoutProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearTimeout) || clearTimeout)(handle);\n },\n delegate: undefined\n};\n","import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\nexport function reportUnhandledError(err) {\n timeoutProvider.setTimeout(() => {\n const {\n onUnhandledError\n } = config;\n if (onUnhandledError) {\n onUnhandledError(err);\n } else {\n throw err;\n }\n });\n}\n","export function noop() {}\n","export const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined))();\nexport function errorNotification(error) {\n return createNotification('E', undefined, error);\n}\nexport function nextNotification(value) {\n return createNotification('N', value, undefined);\n}\nexport function createNotification(kind, value, error) {\n return {\n kind,\n value,\n error\n };\n}\n","import { config } from '../config';\nlet context = null;\nexport function errorContext(cb) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = {\n errorThrown: false,\n error: null\n };\n }\n cb();\n if (isRoot) {\n const {\n errorThrown,\n error\n } = context;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n cb();\n }\n}\nexport function captureError(err) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n","import { isFunction } from './util/isFunction';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\nexport class Subscriber extends Subscription {\n constructor(destination) {\n super();\n this.isStopped = false;\n if (destination) {\n this.destination = destination;\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n static create(next, error, complete) {\n return new SafeSubscriber(next, error, complete);\n }\n next(value) {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value);\n }\n }\n error(err) {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n complete() {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n unsubscribe() {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null;\n }\n }\n _next(value) {\n this.destination.next(value);\n }\n _error(err) {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n _complete() {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\nconst _bind = Function.prototype.bind;\nfunction bind(fn, thisArg) {\n return _bind.call(fn, thisArg);\n}\nclass ConsumerObserver {\n constructor(partialObserver) {\n this.partialObserver = partialObserver;\n }\n next(value) {\n const {\n partialObserver\n } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n error(err) {\n const {\n partialObserver\n } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n complete() {\n const {\n partialObserver\n } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\nexport class SafeSubscriber extends Subscriber {\n constructor(observerOrNext, error, complete) {\n super();\n let partialObserver;\n if (isFunction(observerOrNext) || !observerOrNext) {\n partialObserver = {\n next: observerOrNext !== null && observerOrNext !== void 0 ? observerOrNext : undefined,\n error: error !== null && error !== void 0 ? error : undefined,\n complete: complete !== null && complete !== void 0 ? complete : undefined\n };\n } else {\n let context;\n if (this && config.useDeprecatedNextContext) {\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context)\n };\n } else {\n partialObserver = observerOrNext;\n }\n }\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\nfunction handleUnhandledError(error) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n reportUnhandledError(error);\n }\n}\nfunction defaultErrorHandler(err) {\n throw err;\n}\nfunction handleStoppedNotification(notification, subscriber) {\n const {\n onStoppedNotification\n } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\nexport const EMPTY_OBSERVER = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop\n};\n","export const observable = (() => typeof Symbol === 'function' && Symbol.observable || '@@observable')();\n","export function identity(x) {\n return x;\n}\n","import { identity } from './identity';\nexport function pipe(...fns) {\n return pipeFromArray(fns);\n}\nexport function pipeFromArray(fns) {\n if (fns.length === 0) {\n return identity;\n }\n if (fns.length === 1) {\n return fns[0];\n }\n return function piped(input) {\n return fns.reduce((prev, fn) => fn(prev), input);\n };\n}\n","import { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription } from './Subscription';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\nexport let Observable = /*#__PURE__*/(() => {\n class Observable {\n constructor(subscribe) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n lift(operator) {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n subscribe(observerOrNext, error, complete) {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n errorContext(() => {\n const {\n operator,\n source\n } = this;\n subscriber.add(operator ? operator.call(subscriber, source) : source ? this._subscribe(subscriber) : this._trySubscribe(subscriber));\n });\n return subscriber;\n }\n _trySubscribe(sink) {\n try {\n return this._subscribe(sink);\n } catch (err) {\n sink.error(err);\n }\n }\n forEach(next, promiseCtor) {\n promiseCtor = getPromiseCtor(promiseCtor);\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: value => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve\n });\n this.subscribe(subscriber);\n });\n }\n _subscribe(subscriber) {\n var _a;\n return (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber);\n }\n [Symbol_observable]() {\n return this;\n }\n pipe(...operations) {\n return pipeFromArray(operations)(this);\n }\n toPromise(promiseCtor) {\n promiseCtor = getPromiseCtor(promiseCtor);\n return new promiseCtor((resolve, reject) => {\n let value;\n this.subscribe(x => value = x, err => reject(err), () => resolve(value));\n });\n }\n }\n Observable.create = subscribe => {\n return new Observable(subscribe);\n };\n return Observable;\n})();\nfunction getPromiseCtor(promiseCtor) {\n var _a;\n return (_a = promiseCtor !== null && promiseCtor !== void 0 ? promiseCtor : config.Promise) !== null && _a !== void 0 ? _a : Promise;\n}\nfunction isObserver(value) {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\nfunction isSubscriber(value) {\n return value && value instanceof Subscriber || isObserver(value) && isSubscription(value);\n}\n","import { isFunction } from './isFunction';\nexport function hasLift(source) {\n return isFunction(source === null || source === void 0 ? void 0 : source.lift);\n}\nexport function operate(init) {\n return source => {\n if (hasLift(source)) {\n return source.lift(function (liftedSource) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n","import { Subscriber } from '../Subscriber';\nexport function createOperatorSubscriber(destination, onNext, onComplete, onError, onFinalize) {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\nexport class OperatorSubscriber extends Subscriber {\n constructor(destination, onNext, onComplete, onError, onFinalize, shouldUnsubscribe) {\n super(destination);\n this.onFinalize = onFinalize;\n this.shouldUnsubscribe = shouldUnsubscribe;\n this._next = onNext ? function (value) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n } : super._next;\n this._error = onError ? function (err) {\n try {\n onError(err);\n } catch (err) {\n destination.error(err);\n } finally {\n this.unsubscribe();\n }\n } : super._error;\n this._complete = onComplete ? function () {\n try {\n onComplete();\n } catch (err) {\n destination.error(err);\n } finally {\n this.unsubscribe();\n }\n } : super._complete;\n }\n unsubscribe() {\n var _a;\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const {\n closed\n } = this;\n super.unsubscribe();\n !closed && ((_a = this.onFinalize) === null || _a === void 0 ? void 0 : _a.call(this));\n }\n }\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function refCount() {\n return operate((source, subscriber) => {\n let connection = null;\n source._refCount++;\n const refCounter = createOperatorSubscriber(subscriber, undefined, undefined, undefined, () => {\n if (!source || source._refCount <= 0 || 0 < --source._refCount) {\n connection = null;\n return;\n }\n const sharedConnection = source._connection;\n const conn = connection;\n connection = null;\n if (sharedConnection && (!conn || sharedConnection === conn)) {\n sharedConnection.unsubscribe();\n }\n subscriber.unsubscribe();\n });\n source.subscribe(refCounter);\n if (!refCounter.closed) {\n connection = source.connect();\n }\n });\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { refCount as higherOrderRefCount } from '../operators/refCount';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { hasLift } from '../util/lift';\nexport class ConnectableObservable extends Observable {\n constructor(source, subjectFactory) {\n super();\n this.source = source;\n this.subjectFactory = subjectFactory;\n this._subject = null;\n this._refCount = 0;\n this._connection = null;\n if (hasLift(source)) {\n this.lift = source.lift;\n }\n }\n _subscribe(subscriber) {\n return this.getSubject().subscribe(subscriber);\n }\n getSubject() {\n const subject = this._subject;\n if (!subject || subject.isStopped) {\n this._subject = this.subjectFactory();\n }\n return this._subject;\n }\n _teardown() {\n this._refCount = 0;\n const {\n _connection\n } = this;\n this._subject = this._connection = null;\n _connection === null || _connection === void 0 ? void 0 : _connection.unsubscribe();\n }\n connect() {\n let connection = this._connection;\n if (!connection) {\n connection = this._connection = new Subscription();\n const subject = this.getSubject();\n connection.add(this.source.subscribe(createOperatorSubscriber(subject, undefined, () => {\n this._teardown();\n subject.complete();\n }, err => {\n this._teardown();\n subject.error(err);\n }, () => this._teardown())));\n if (connection.closed) {\n this._connection = null;\n connection = Subscription.EMPTY;\n }\n }\n return connection;\n }\n refCount() {\n return higherOrderRefCount()(this);\n }\n}\n","import { Subscription } from '../Subscription';\nexport const animationFrameProvider = {\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel = cancelAnimationFrame;\n const {\n delegate\n } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request(timestamp => {\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel === null || cancel === void 0 ? void 0 : cancel(handle));\n },\n requestAnimationFrame(...args) {\n const {\n delegate\n } = animationFrameProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.requestAnimationFrame) || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const {\n delegate\n } = animationFrameProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.cancelAnimationFrame) || cancelAnimationFrame)(...args);\n },\n delegate: undefined\n};\n","import { createErrorClass } from './createErrorClass';\nexport const ObjectUnsubscribedError = createErrorClass(_super => function ObjectUnsubscribedErrorImpl() {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n});\n","import { Observable } from './Observable';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\nexport let Subject = /*#__PURE__*/(() => {\n class Subject extends Observable {\n constructor() {\n super();\n this.closed = false;\n this.currentObservers = null;\n this.observers = [];\n this.isStopped = false;\n this.hasError = false;\n this.thrownError = null;\n }\n lift(operator) {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator;\n return subject;\n }\n _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n next(value) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n error(err) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const {\n observers\n } = this;\n while (observers.length) {\n observers.shift().error(err);\n }\n }\n });\n }\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const {\n observers\n } = this;\n while (observers.length) {\n observers.shift().complete();\n }\n }\n });\n }\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null;\n }\n get observed() {\n var _a;\n return ((_a = this.observers) === null || _a === void 0 ? void 0 : _a.length) > 0;\n }\n _trySubscribe(subscriber) {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n _subscribe(subscriber) {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n _innerSubscribe(subscriber) {\n const {\n hasError,\n isStopped,\n observers\n } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n _checkFinalizedStatuses(subscriber) {\n const {\n hasError,\n thrownError,\n isStopped\n } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n asObservable() {\n const observable = new Observable();\n observable.source = this;\n return observable;\n }\n }\n Subject.create = (destination, source) => {\n return new AnonymousSubject(destination, source);\n };\n return Subject;\n})();\nexport class AnonymousSubject extends Subject {\n constructor(destination, source) {\n super();\n this.destination = destination;\n this.source = source;\n }\n next(value) {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.next) === null || _b === void 0 ? void 0 : _b.call(_a, value);\n }\n error(err) {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.error) === null || _b === void 0 ? void 0 : _b.call(_a, err);\n }\n complete() {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.complete) === null || _b === void 0 ? void 0 : _b.call(_a);\n }\n _subscribe(subscriber) {\n var _a, _b;\n return (_b = (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber)) !== null && _b !== void 0 ? _b : EMPTY_SUBSCRIPTION;\n }\n}\n","import { Subject } from './Subject';\nexport class BehaviorSubject extends Subject {\n constructor(_value) {\n super();\n this._value = _value;\n }\n get value() {\n return this.getValue();\n }\n _subscribe(subscriber) {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n getValue() {\n const {\n hasError,\n thrownError,\n _value\n } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n next(value) {\n super.next(this._value = value);\n }\n}\n","export const dateTimestampProvider = {\n now() {\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined\n};\n","import { Subject } from './Subject';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\nexport class ReplaySubject extends Subject {\n constructor(_bufferSize = Infinity, _windowTime = Infinity, _timestampProvider = dateTimestampProvider) {\n super();\n this._bufferSize = _bufferSize;\n this._windowTime = _windowTime;\n this._timestampProvider = _timestampProvider;\n this._buffer = [];\n this._infiniteTimeWindow = true;\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n next(value) {\n const {\n isStopped,\n _buffer,\n _infiniteTimeWindow,\n _timestampProvider,\n _windowTime\n } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n _subscribe(subscriber) {\n this._throwIfClosed();\n this._trimBuffer();\n const subscription = this._innerSubscribe(subscriber);\n const {\n _infiniteTimeWindow,\n _buffer\n } = this;\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i]);\n }\n this._checkFinalizedStatuses(subscriber);\n return subscription;\n }\n _trimBuffer() {\n const {\n _bufferSize,\n _timestampProvider,\n _buffer,\n _infiniteTimeWindow\n } = this;\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n for (let i = 1; i < _buffer.length && _buffer[i] <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n","import { Subscription } from '../Subscription';\nexport class Action extends Subscription {\n constructor(scheduler, work) {\n super();\n }\n schedule(state, delay = 0) {\n return this;\n }\n}\n","export const intervalProvider = {\n setInterval(handler, timeout, ...args) {\n const {\n delegate\n } = intervalProvider;\n if (delegate === null || delegate === void 0 ? void 0 : delegate.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const {\n delegate\n } = intervalProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearInterval) || clearInterval)(handle);\n },\n delegate: undefined\n};\n","import { Action } from './Action';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nexport class AsyncAction extends Action {\n constructor(scheduler, work) {\n super(scheduler, work);\n this.scheduler = scheduler;\n this.work = work;\n this.pending = false;\n }\n schedule(state, delay = 0) {\n var _a;\n if (this.closed) {\n return this;\n }\n this.state = state;\n const id = this.id;\n const scheduler = this.scheduler;\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n this.pending = true;\n this.delay = delay;\n this.id = (_a = this.id) !== null && _a !== void 0 ? _a : this.requestAsyncId(scheduler, this.id, delay);\n return this;\n }\n requestAsyncId(scheduler, _id, delay = 0) {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n recycleAsyncId(_scheduler, id, delay = 0) {\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n return undefined;\n }\n execute(state, delay) {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n _execute(state, _delay) {\n let errored = false;\n let errorValue;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n unsubscribe() {\n if (!this.closed) {\n const {\n id,\n scheduler\n } = this;\n const {\n actions\n } = scheduler;\n this.work = this.state = this.scheduler = null;\n this.pending = false;\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n this.delay = null;\n super.unsubscribe();\n }\n }\n}\n","let nextHandle = 1;\nlet resolved;\nconst activeHandles = {};\nfunction findAndClearHandle(handle) {\n if (handle in activeHandles) {\n delete activeHandles[handle];\n return true;\n }\n return false;\n}\nexport const Immediate = {\n setImmediate(cb) {\n const handle = nextHandle++;\n activeHandles[handle] = true;\n if (!resolved) {\n resolved = Promise.resolve();\n }\n resolved.then(() => findAndClearHandle(handle) && cb());\n return handle;\n },\n clearImmediate(handle) {\n findAndClearHandle(handle);\n }\n};\nexport const TestTools = {\n pending() {\n return Object.keys(activeHandles).length;\n }\n};\n","import { Immediate } from '../util/Immediate';\nconst {\n setImmediate,\n clearImmediate\n} = Immediate;\nexport const immediateProvider = {\n setImmediate(...args) {\n const {\n delegate\n } = immediateProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.setImmediate) || setImmediate)(...args);\n },\n clearImmediate(handle) {\n const {\n delegate\n } = immediateProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearImmediate) || clearImmediate)(handle);\n },\n delegate: undefined\n};\n","import { AsyncAction } from './AsyncAction';\nimport { immediateProvider } from './immediateProvider';\nexport class AsapAction extends AsyncAction {\n constructor(scheduler, work) {\n super(scheduler, work);\n this.scheduler = scheduler;\n this.work = work;\n }\n requestAsyncId(scheduler, id, delay = 0) {\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n scheduler.actions.push(this);\n return scheduler._scheduled || (scheduler._scheduled = immediateProvider.setImmediate(scheduler.flush.bind(scheduler, undefined)));\n }\n recycleAsyncId(scheduler, id, delay = 0) {\n var _a;\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n const {\n actions\n } = scheduler;\n if (id != null && ((_a = actions[actions.length - 1]) === null || _a === void 0 ? void 0 : _a.id) !== id) {\n immediateProvider.clearImmediate(id);\n if (scheduler._scheduled === id) {\n scheduler._scheduled = undefined;\n }\n }\n return undefined;\n }\n}\n","import { dateTimestampProvider } from './scheduler/dateTimestampProvider';\nexport class Scheduler {\n constructor(schedulerActionCtor, now = Scheduler.now) {\n this.schedulerActionCtor = schedulerActionCtor;\n this.now = now;\n }\n schedule(work, delay = 0, state) {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\nScheduler.now = dateTimestampProvider.now;\n","import { Scheduler } from '../Scheduler';\nexport class AsyncScheduler extends Scheduler {\n constructor(SchedulerAction, now = Scheduler.now) {\n super(SchedulerAction, now);\n this.actions = [];\n this._active = false;\n }\n flush(action) {\n const {\n actions\n } = this;\n if (this._active) {\n actions.push(action);\n return;\n }\n let error;\n this._active = true;\n do {\n if (error = action.execute(action.state, action.delay)) {\n break;\n }\n } while (action = actions.shift());\n this._active = false;\n if (error) {\n while (action = actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n","import { AsyncScheduler } from './AsyncScheduler';\nexport class AsapScheduler extends AsyncScheduler {\n flush(action) {\n this._active = true;\n const flushId = this._scheduled;\n this._scheduled = undefined;\n const {\n actions\n } = this;\n let error;\n action = action || actions.shift();\n do {\n if (error = action.execute(action.state, action.delay)) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n this._active = false;\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n","import { AsapAction } from './AsapAction';\nimport { AsapScheduler } from './AsapScheduler';\nexport const asapScheduler = new AsapScheduler(AsapAction);\nexport const asap = asapScheduler;\n","import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\nexport const async = asyncScheduler;\n","import { AsyncAction } from './AsyncAction';\nimport { animationFrameProvider } from './animationFrameProvider';\nexport class AnimationFrameAction extends AsyncAction {\n constructor(scheduler, work) {\n super(scheduler, work);\n this.scheduler = scheduler;\n this.work = work;\n }\n requestAsyncId(scheduler, id, delay = 0) {\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n scheduler.actions.push(this);\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n recycleAsyncId(scheduler, id, delay = 0) {\n var _a;\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n const {\n actions\n } = scheduler;\n if (id != null && ((_a = actions[actions.length - 1]) === null || _a === void 0 ? void 0 : _a.id) !== id) {\n animationFrameProvider.cancelAnimationFrame(id);\n scheduler._scheduled = undefined;\n }\n return undefined;\n }\n}\n","import { AsyncScheduler } from './AsyncScheduler';\nexport class AnimationFrameScheduler extends AsyncScheduler {\n flush(action) {\n this._active = true;\n const flushId = this._scheduled;\n this._scheduled = undefined;\n const {\n actions\n } = this;\n let error;\n action = action || actions.shift();\n do {\n if (error = action.execute(action.state, action.delay)) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n this._active = false;\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n","import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\nexport const animationFrame = animationFrameScheduler;\n","import { Observable } from '../Observable';\nexport const EMPTY = new Observable(subscriber => subscriber.complete());\nexport function empty(scheduler) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\nfunction emptyScheduled(scheduler) {\n return new Observable(subscriber => scheduler.schedule(() => subscriber.complete()));\n}\n","import { isFunction } from './isFunction';\nexport function isScheduler(value) {\n return value && isFunction(value.schedule);\n}\n","import { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\nfunction last(arr) {\n return arr[arr.length - 1];\n}\nexport function popResultSelector(args) {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\nexport function popScheduler(args) {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\nexport function popNumber(args, defaultValue) {\n return typeof last(args) === 'number' ? args.pop() : defaultValue;\n}\n","/******************************************************************************\nCopyright (c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol */\n\nvar extendStatics = function (d, b) {\n extendStatics = Object.setPrototypeOf || {\n __proto__: []\n } instanceof Array && function (d, b) {\n d.__proto__ = b;\n } || function (d, b) {\n for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];\n };\n return extendStatics(d, b);\n};\nexport function __extends(d, b) {\n if (typeof b !== \"function\" && b !== null) throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n extendStatics(d, b);\n function __() {\n this.constructor = d;\n }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\nexport var __assign = function () {\n __assign = Object.assign || function __assign(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nexport function __rest(s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];\n }\n return t;\n}\nexport function __decorate(decorators, target, key, desc) {\n var c = arguments.length,\n r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\nexport function __param(paramIndex, decorator) {\n return function (target, key) {\n decorator(target, key, paramIndex);\n };\n}\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n function accept(f) {\n if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\");\n return f;\n }\n var kind = contextIn.kind,\n key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\n var _,\n done = false;\n for (var i = decorators.length - 1; i >= 0; i--) {\n var context = {};\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\n context.addInitializer = function (f) {\n if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\");\n extraInitializers.push(accept(f || null));\n };\n var result = (0, decorators[i])(kind === \"accessor\" ? {\n get: descriptor.get,\n set: descriptor.set\n } : descriptor[key], context);\n if (kind === \"accessor\") {\n if (result === void 0) continue;\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\n if (_ = accept(result.get)) descriptor.get = _;\n if (_ = accept(result.set)) descriptor.set = _;\n if (_ = accept(result.init)) initializers.unshift(_);\n } else if (_ = accept(result)) {\n if (kind === \"field\") initializers.unshift(_);else descriptor[key] = _;\n }\n }\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\n done = true;\n}\n;\nexport function __runInitializers(thisArg, initializers, value) {\n var useValue = arguments.length > 2;\n for (var i = 0; i < initializers.length; i++) {\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\n }\n return useValue ? value : void 0;\n}\n;\nexport function __propKey(x) {\n return typeof x === \"symbol\" ? x : \"\".concat(x);\n}\n;\nexport function __setFunctionName(f, name, prefix) {\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\n return Object.defineProperty(f, \"name\", {\n configurable: true,\n value: prefix ? \"\".concat(prefix, \" \", name) : name\n });\n}\n;\nexport function __metadata(metadataKey, metadataValue) {\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\n}\nexport function __awaiter(thisArg, _arguments, P, generator) {\n function adopt(value) {\n return value instanceof P ? value : new P(function (resolve) {\n resolve(value);\n });\n }\n return new (P || (P = Promise))(function (resolve, reject) {\n function fulfilled(value) {\n try {\n step(generator.next(value));\n } catch (e) {\n reject(e);\n }\n }\n function rejected(value) {\n try {\n step(generator[\"throw\"](value));\n } catch (e) {\n reject(e);\n }\n }\n function step(result) {\n result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);\n }\n step((generator = generator.apply(thisArg, _arguments || [])).next());\n });\n}\nexport function __generator(thisArg, body) {\n var _ = {\n label: 0,\n sent: function () {\n if (t[0] & 1) throw t[1];\n return t[1];\n },\n trys: [],\n ops: []\n },\n f,\n y,\n t,\n g;\n return g = {\n next: verb(0),\n \"throw\": verb(1),\n \"return\": verb(2)\n }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function () {\n return this;\n }), g;\n function verb(n) {\n return function (v) {\n return step([n, v]);\n };\n }\n function step(op) {\n if (f) throw new TypeError(\"Generator is already executing.\");\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n if (y = 0, t) op = [op[0] & 2, t.value];\n switch (op[0]) {\n case 0:\n case 1:\n t = op;\n break;\n case 4:\n _.label++;\n return {\n value: op[1],\n done: false\n };\n case 5:\n _.label++;\n y = op[1];\n op = [0];\n continue;\n case 7:\n op = _.ops.pop();\n _.trys.pop();\n continue;\n default:\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {\n _ = 0;\n continue;\n }\n if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {\n _.label = op[1];\n break;\n }\n if (op[0] === 6 && _.label < t[1]) {\n _.label = t[1];\n t = op;\n break;\n }\n if (t && _.label < t[2]) {\n _.label = t[2];\n _.ops.push(op);\n break;\n }\n if (t[2]) _.ops.pop();\n _.trys.pop();\n continue;\n }\n op = body.call(thisArg, _);\n } catch (e) {\n op = [6, e];\n y = 0;\n } finally {\n f = t = 0;\n }\n if (op[0] & 5) throw op[1];\n return {\n value: op[0] ? op[1] : void 0,\n done: true\n };\n }\n}\nexport var __createBinding = Object.create ? function (o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n var desc = Object.getOwnPropertyDescriptor(m, k);\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n desc = {\n enumerable: true,\n get: function () {\n return m[k];\n }\n };\n }\n Object.defineProperty(o, k2, desc);\n} : function (o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n};\nexport function __exportStar(m, o) {\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\nexport function __values(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator,\n m = s && o[s],\n i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return {\n value: o && o[i++],\n done: !o\n };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\nexport function __read(o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o),\n r,\n ar = [],\n e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n } catch (error) {\n e = {\n error: error\n };\n } finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n } finally {\n if (e) throw e.error;\n }\n }\n return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));\n return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++) for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++) r[k] = a[j];\n return r;\n}\nexport function __spreadArray(to, from, pack) {\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n if (ar || !(i in from)) {\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n ar[i] = from[i];\n }\n }\n return to.concat(ar || Array.prototype.slice.call(from));\n}\nexport function __await(v) {\n return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []),\n i,\n q = [];\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n return this;\n }, i;\n function verb(n) {\n if (g[n]) i[n] = function (v) {\n return new Promise(function (a, b) {\n q.push([n, v, a, b]) > 1 || resume(n, v);\n });\n };\n }\n function resume(n, v) {\n try {\n step(g[n](v));\n } catch (e) {\n settle(q[0][3], e);\n }\n }\n function step(r) {\n r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);\n }\n function fulfill(value) {\n resume(\"next\", value);\n }\n function reject(value) {\n resume(\"throw\", value);\n }\n function settle(f, v) {\n if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]);\n }\n}\nexport function __asyncDelegator(o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) {\n throw e;\n }), verb(\"return\"), i[Symbol.iterator] = function () {\n return this;\n }, i;\n function verb(n, f) {\n i[n] = o[n] ? function (v) {\n return (p = !p) ? {\n value: __await(o[n](v)),\n done: false\n } : f ? f(v) : v;\n } : f;\n }\n}\nexport function __asyncValues(o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator],\n i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n return this;\n }, i);\n function verb(n) {\n i[n] = o[n] && function (v) {\n return new Promise(function (resolve, reject) {\n v = o[n](v), settle(resolve, reject, v.done, v.value);\n });\n };\n }\n function settle(resolve, reject, d, v) {\n Promise.resolve(v).then(function (v) {\n resolve({\n value: v,\n done: d\n });\n }, reject);\n }\n}\nexport function __makeTemplateObject(cooked, raw) {\n if (Object.defineProperty) {\n Object.defineProperty(cooked, \"raw\", {\n value: raw\n });\n } else {\n cooked.raw = raw;\n }\n return cooked;\n}\n;\nvar __setModuleDefault = Object.create ? function (o, v) {\n Object.defineProperty(o, \"default\", {\n enumerable: true,\n value: v\n });\n} : function (o, v) {\n o[\"default\"] = v;\n};\nexport function __importStar(mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n}\nexport function __importDefault(mod) {\n return mod && mod.__esModule ? mod : {\n default: mod\n };\n}\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n return kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value), value;\n}\nexport function __classPrivateFieldIn(state, receiver) {\n if (receiver === null || typeof receiver !== \"object\" && typeof receiver !== \"function\") throw new TypeError(\"Cannot use 'in' operator on non-object\");\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\nexport function __addDisposableResource(env, value, async) {\n if (value !== null && value !== void 0) {\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n var dispose;\n if (async) {\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n dispose = value[Symbol.asyncDispose];\n }\n if (dispose === void 0) {\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n dispose = value[Symbol.dispose];\n }\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n env.stack.push({\n value: value,\n dispose: dispose,\n async: async\n });\n } else if (async) {\n env.stack.push({\n async: true\n });\n }\n return value;\n}\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n var e = new Error(message);\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\nexport function __disposeResources(env) {\n function fail(e) {\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n env.hasError = true;\n }\n function next() {\n while (env.stack.length) {\n var rec = env.stack.pop();\n try {\n var result = rec.dispose && rec.dispose.call(rec.value);\n if (rec.async) return Promise.resolve(result).then(next, function (e) {\n fail(e);\n return next();\n });\n } catch (e) {\n fail(e);\n }\n }\n if (env.hasError) throw env.error;\n }\n return next();\n}\nexport default {\n __extends,\n __assign,\n __rest,\n __decorate,\n __param,\n __metadata,\n __awaiter,\n __generator,\n __createBinding,\n __exportStar,\n __values,\n __read,\n __spread,\n __spreadArrays,\n __spreadArray,\n __await,\n __asyncGenerator,\n __asyncDelegator,\n __asyncValues,\n __makeTemplateObject,\n __importStar,\n __importDefault,\n __classPrivateFieldGet,\n __classPrivateFieldSet,\n __classPrivateFieldIn,\n __addDisposableResource,\n __disposeResources\n};","export const isArrayLike = x => x && typeof x.length === 'number' && typeof x !== 'function';\n","import { isFunction } from \"./isFunction\";\nexport function isPromise(value) {\n return isFunction(value === null || value === void 0 ? void 0 : value.then);\n}\n","import { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\nexport function isInteropObservable(input) {\n return isFunction(input[Symbol_observable]);\n}\n","import { isFunction } from './isFunction';\nexport function isAsyncIterable(obj) {\n return Symbol.asyncIterator && isFunction(obj === null || obj === void 0 ? void 0 : obj[Symbol.asyncIterator]);\n}\n","export function createInvalidObservableTypeError(input) {\n return new TypeError(`You provided ${input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`} where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`);\n}\n","export function getSymbolIterator() {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator';\n }\n return Symbol.iterator;\n}\nexport const iterator = getSymbolIterator();\n","import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\nexport function isIterable(input) {\n return isFunction(input === null || input === void 0 ? void 0 : input[Symbol_iterator]);\n}\n","import { __asyncGenerator, __await } from \"tslib\";\nimport { isFunction } from './isFunction';\nexport function readableStreamLikeToAsyncGenerator(readableStream) {\n return __asyncGenerator(this, arguments, function* readableStreamLikeToAsyncGenerator_1() {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const {\n value,\n done\n } = yield __await(reader.read());\n if (done) {\n return yield __await(void 0);\n }\n yield yield __await(value);\n }\n } finally {\n reader.releaseLock();\n }\n });\n}\nexport function isReadableStreamLike(obj) {\n return isFunction(obj === null || obj === void 0 ? void 0 : obj.getReader);\n}\n","import { __asyncValues, __awaiter } from \"tslib\";\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isPromise } from '../util/isPromise';\nimport { Observable } from '../Observable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isIterable } from '../util/isIterable';\nimport { isReadableStreamLike, readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nimport { isFunction } from '../util/isFunction';\nimport { reportUnhandledError } from '../util/reportUnhandledError';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function innerFrom(input) {\n if (input instanceof Observable) {\n return input;\n }\n if (input != null) {\n if (isInteropObservable(input)) {\n return fromInteropObservable(input);\n }\n if (isArrayLike(input)) {\n return fromArrayLike(input);\n }\n if (isPromise(input)) {\n return fromPromise(input);\n }\n if (isAsyncIterable(input)) {\n return fromAsyncIterable(input);\n }\n if (isIterable(input)) {\n return fromIterable(input);\n }\n if (isReadableStreamLike(input)) {\n return fromReadableStreamLike(input);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\nexport function fromInteropObservable(obj) {\n return new Observable(subscriber => {\n const obs = obj[Symbol_observable]();\n if (isFunction(obs.subscribe)) {\n return obs.subscribe(subscriber);\n }\n throw new TypeError('Provided object does not correctly implement Symbol.observable');\n });\n}\nexport function fromArrayLike(array) {\n return new Observable(subscriber => {\n for (let i = 0; i < array.length && !subscriber.closed; i++) {\n subscriber.next(array[i]);\n }\n subscriber.complete();\n });\n}\nexport function fromPromise(promise) {\n return new Observable(subscriber => {\n promise.then(value => {\n if (!subscriber.closed) {\n subscriber.next(value);\n subscriber.complete();\n }\n }, err => subscriber.error(err)).then(null, reportUnhandledError);\n });\n}\nexport function fromIterable(iterable) {\n return new Observable(subscriber => {\n for (const value of iterable) {\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n });\n}\nexport function fromAsyncIterable(asyncIterable) {\n return new Observable(subscriber => {\n process(asyncIterable, subscriber).catch(err => subscriber.error(err));\n });\n}\nexport function fromReadableStreamLike(readableStream) {\n return fromAsyncIterable(readableStreamLikeToAsyncGenerator(readableStream));\n}\nfunction process(asyncIterable, subscriber) {\n var asyncIterable_1, asyncIterable_1_1;\n var e_1, _a;\n return __awaiter(this, void 0, void 0, function* () {\n try {\n for (asyncIterable_1 = __asyncValues(asyncIterable); asyncIterable_1_1 = yield asyncIterable_1.next(), !asyncIterable_1_1.done;) {\n const value = asyncIterable_1_1.value;\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n } catch (e_1_1) {\n e_1 = {\n error: e_1_1\n };\n } finally {\n try {\n if (asyncIterable_1_1 && !asyncIterable_1_1.done && (_a = asyncIterable_1.return)) yield _a.call(asyncIterable_1);\n } finally {\n if (e_1) throw e_1.error;\n }\n }\n subscriber.complete();\n });\n}\n","export function executeSchedule(parentSubscription, scheduler, work, delay = 0, repeat = false) {\n const scheduleSubscription = scheduler.schedule(function () {\n work();\n if (repeat) {\n parentSubscription.add(this.schedule(null, delay));\n } else {\n this.unsubscribe();\n }\n }, delay);\n parentSubscription.add(scheduleSubscription);\n if (!repeat) {\n return scheduleSubscription;\n }\n}\n","import { executeSchedule } from '../util/executeSchedule';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function observeOn(scheduler, delay = 0) {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, value => executeSchedule(subscriber, scheduler, () => subscriber.next(value), delay), () => executeSchedule(subscriber, scheduler, () => subscriber.complete(), delay), err => executeSchedule(subscriber, scheduler, () => subscriber.error(err), delay)));\n });\n}\n","import { operate } from '../util/lift';\nexport function subscribeOn(scheduler, delay = 0) {\n return operate((source, subscriber) => {\n subscriber.add(scheduler.schedule(() => source.subscribe(subscriber), delay));\n });\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nexport function scheduleObservable(input, scheduler) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nexport function schedulePromise(input, scheduler) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n","import { Observable } from '../Observable';\nexport function scheduleArray(input, scheduler) {\n return new Observable(subscriber => {\n let i = 0;\n return scheduler.schedule(function () {\n if (i === input.length) {\n subscriber.complete();\n } else {\n subscriber.next(input[i++]);\n if (!subscriber.closed) {\n this.schedule();\n }\n }\n });\n });\n}\n","import { Observable } from '../Observable';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from '../util/isFunction';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function scheduleIterable(input, scheduler) {\n return new Observable(subscriber => {\n let iterator;\n executeSchedule(subscriber, scheduler, () => {\n iterator = input[Symbol_iterator]();\n executeSchedule(subscriber, scheduler, () => {\n let value;\n let done;\n try {\n ({\n value,\n done\n } = iterator.next());\n } catch (err) {\n subscriber.error(err);\n return;\n }\n if (done) {\n subscriber.complete();\n } else {\n subscriber.next(value);\n }\n }, 0, true);\n });\n return () => isFunction(iterator === null || iterator === void 0 ? void 0 : iterator.return) && iterator.return();\n });\n}\n","import { Observable } from '../Observable';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function scheduleAsyncIterable(input, scheduler) {\n if (!input) {\n throw new Error('Iterable cannot be null');\n }\n return new Observable(subscriber => {\n executeSchedule(subscriber, scheduler, () => {\n const iterator = input[Symbol.asyncIterator]();\n executeSchedule(subscriber, scheduler, () => {\n iterator.next().then(result => {\n if (result.done) {\n subscriber.complete();\n } else {\n subscriber.next(result.value);\n }\n });\n }, 0, true);\n });\n });\n}\n","import { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nexport function scheduleReadableStreamLike(input, scheduler) {\n return scheduleAsyncIterable(readableStreamLikeToAsyncGenerator(input), scheduler);\n}\n","import { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isReadableStreamLike } from '../util/isReadableStreamLike';\nimport { scheduleReadableStreamLike } from './scheduleReadableStreamLike';\nexport function scheduled(input, scheduler) {\n if (input != null) {\n if (isInteropObservable(input)) {\n return scheduleObservable(input, scheduler);\n }\n if (isArrayLike(input)) {\n return scheduleArray(input, scheduler);\n }\n if (isPromise(input)) {\n return schedulePromise(input, scheduler);\n }\n if (isAsyncIterable(input)) {\n return scheduleAsyncIterable(input, scheduler);\n }\n if (isIterable(input)) {\n return scheduleIterable(input, scheduler);\n }\n if (isReadableStreamLike(input)) {\n return scheduleReadableStreamLike(input, scheduler);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\n","import { scheduled } from '../scheduled/scheduled';\nimport { innerFrom } from './innerFrom';\nexport function from(input, scheduler) {\n return scheduler ? scheduled(input, scheduler) : innerFrom(input);\n}\n","import { popScheduler } from '../util/args';\nimport { from } from './from';\nexport function of(...args) {\n const scheduler = popScheduler(args);\n return from(args, scheduler);\n}\n","import { Observable } from '../Observable';\nimport { isFunction } from '../util/isFunction';\nexport function throwError(errorOrErrorFactory, scheduler) {\n const errorFactory = isFunction(errorOrErrorFactory) ? errorOrErrorFactory : () => errorOrErrorFactory;\n const init = subscriber => subscriber.error(errorFactory());\n return new Observable(scheduler ? subscriber => scheduler.schedule(init, 0, subscriber) : init);\n}\n","import { Observable } from '../Observable';\nimport { isFunction } from './isFunction';\nexport function isObservable(obj) {\n return !!obj && (obj instanceof Observable || isFunction(obj.lift) && isFunction(obj.subscribe));\n}\n","import { createErrorClass } from './createErrorClass';\nexport const EmptyError = createErrorClass(_super => function EmptyErrorImpl() {\n _super(this);\n this.name = 'EmptyError';\n this.message = 'no elements in sequence';\n});\n","import { EmptyError } from './util/EmptyError';\nexport function lastValueFrom(source, config) {\n const hasConfig = typeof config === 'object';\n return new Promise((resolve, reject) => {\n let _hasValue = false;\n let _value;\n source.subscribe({\n next: value => {\n _value = value;\n _hasValue = true;\n },\n error: reject,\n complete: () => {\n if (_hasValue) {\n resolve(_value);\n } else if (hasConfig) {\n resolve(config.defaultValue);\n } else {\n reject(new EmptyError());\n }\n }\n });\n });\n}\n","import { EmptyError } from './util/EmptyError';\nimport { SafeSubscriber } from './Subscriber';\nexport function firstValueFrom(source, config) {\n const hasConfig = typeof config === 'object';\n return new Promise((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: value => {\n resolve(value);\n subscriber.unsubscribe();\n },\n error: reject,\n complete: () => {\n if (hasConfig) {\n resolve(config.defaultValue);\n } else {\n reject(new EmptyError());\n }\n }\n });\n source.subscribe(subscriber);\n });\n}\n","export function isValidDate(value) {\n return value instanceof Date && !isNaN(value);\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { isValidDate } from '../util/isDate';\nimport { operate } from '../util/lift';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createErrorClass } from '../util/createErrorClass';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { executeSchedule } from '../util/executeSchedule';\nexport const TimeoutError = createErrorClass(_super => function TimeoutErrorImpl(info = null) {\n _super(this);\n this.message = 'Timeout has occurred';\n this.name = 'TimeoutError';\n this.info = info;\n});\nexport function timeout(config, schedulerArg) {\n const {\n first,\n each,\n with: _with = timeoutErrorFactory,\n scheduler = schedulerArg !== null && schedulerArg !== void 0 ? schedulerArg : asyncScheduler,\n meta = null\n } = isValidDate(config) ? {\n first: config\n } : typeof config === 'number' ? {\n each: config\n } : config;\n if (first == null && each == null) {\n throw new TypeError('No timeout provided.');\n }\n return operate((source, subscriber) => {\n let originalSourceSubscription;\n let timerSubscription;\n let lastValue = null;\n let seen = 0;\n const startTimer = delay => {\n timerSubscription = executeSchedule(subscriber, scheduler, () => {\n try {\n originalSourceSubscription.unsubscribe();\n innerFrom(_with({\n meta,\n lastValue,\n seen\n })).subscribe(subscriber);\n } catch (err) {\n subscriber.error(err);\n }\n }, delay);\n };\n originalSourceSubscription = source.subscribe(createOperatorSubscriber(subscriber, value => {\n timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.unsubscribe();\n seen++;\n subscriber.next(lastValue = value);\n each > 0 && startTimer(each);\n }, undefined, undefined, () => {\n if (!(timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.closed)) {\n timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.unsubscribe();\n }\n lastValue = null;\n }));\n !seen && startTimer(first != null ? typeof first === 'number' ? first : +first - scheduler.now() : each);\n });\n}\nfunction timeoutErrorFactory(info) {\n throw new TimeoutError(info);\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function map(project, thisArg) {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n subscriber.next(project.call(thisArg, value, index++));\n }));\n });\n}\n","import { map } from \"../operators/map\";\nconst {\n isArray\n} = Array;\nfunction callOrApply(fn, args) {\n return isArray(args) ? fn(...args) : fn(args);\n}\nexport function mapOneOrManyArgs(fn) {\n return map(args => callOrApply(fn, args));\n}\n","const {\n isArray\n} = Array;\nconst {\n getPrototypeOf,\n prototype: objectProto,\n keys: getKeys\n} = Object;\nexport function argsArgArrayOrObject(args) {\n if (args.length === 1) {\n const first = args[0];\n if (isArray(first)) {\n return {\n args: first,\n keys: null\n };\n }\n if (isPOJO(first)) {\n const keys = getKeys(first);\n return {\n args: keys.map(key => first[key]),\n keys\n };\n }\n }\n return {\n args: args,\n keys: null\n };\n}\nfunction isPOJO(obj) {\n return obj && typeof obj === 'object' && getPrototypeOf(obj) === objectProto;\n}\n","export function createObject(keys, values) {\n return keys.reduce((result, key, i) => (result[key] = values[i], result), {});\n}\n","import { Observable } from '../Observable';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { from } from './from';\nimport { identity } from '../util/identity';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { popResultSelector, popScheduler } from '../util/args';\nimport { createObject } from '../util/createObject';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function combineLatest(...args) {\n const scheduler = popScheduler(args);\n const resultSelector = popResultSelector(args);\n const {\n args: observables,\n keys\n } = argsArgArrayOrObject(args);\n if (observables.length === 0) {\n return from([], scheduler);\n }\n const result = new Observable(combineLatestInit(observables, scheduler, keys ? values => createObject(keys, values) : identity));\n return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;\n}\nexport function combineLatestInit(observables, scheduler, valueTransform = identity) {\n return subscriber => {\n maybeSchedule(scheduler, () => {\n const {\n length\n } = observables;\n const values = new Array(length);\n let active = length;\n let remainingFirstValues = length;\n for (let i = 0; i < length; i++) {\n maybeSchedule(scheduler, () => {\n const source = from(observables[i], scheduler);\n let hasFirstValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n values[i] = value;\n if (!hasFirstValue) {\n hasFirstValue = true;\n remainingFirstValues--;\n }\n if (!remainingFirstValues) {\n subscriber.next(valueTransform(values.slice()));\n }\n }, () => {\n if (! --active) {\n subscriber.complete();\n }\n }));\n }, subscriber);\n }\n }, subscriber);\n };\n}\nfunction maybeSchedule(scheduler, execute, subscription) {\n if (scheduler) {\n executeSchedule(subscription, scheduler, execute);\n } else {\n execute();\n }\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalFinalizer) {\n const buffer = [];\n let active = 0;\n let index = 0;\n let isComplete = false;\n const checkComplete = () => {\n if (isComplete && !buffer.length && !active) {\n subscriber.complete();\n }\n };\n const outerNext = value => active < concurrent ? doInnerSub(value) : buffer.push(value);\n const doInnerSub = value => {\n expand && subscriber.next(value);\n active++;\n let innerComplete = false;\n innerFrom(project(value, index++)).subscribe(createOperatorSubscriber(subscriber, innerValue => {\n onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);\n if (expand) {\n outerNext(innerValue);\n } else {\n subscriber.next(innerValue);\n }\n }, () => {\n innerComplete = true;\n }, undefined, () => {\n if (innerComplete) {\n try {\n active--;\n while (buffer.length && active < concurrent) {\n const bufferedValue = buffer.shift();\n if (innerSubScheduler) {\n executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));\n } else {\n doInnerSub(bufferedValue);\n }\n }\n checkComplete();\n } catch (err) {\n subscriber.error(err);\n }\n }\n }));\n };\n source.subscribe(createOperatorSubscriber(subscriber, outerNext, () => {\n isComplete = true;\n checkComplete();\n }));\n return () => {\n additionalFinalizer === null || additionalFinalizer === void 0 ? void 0 : additionalFinalizer();\n };\n}\n","import { map } from './map';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nimport { isFunction } from '../util/isFunction';\nexport function mergeMap(project, resultSelector, concurrent = Infinity) {\n if (isFunction(resultSelector)) {\n return mergeMap((a, i) => map((b, ii) => resultSelector(a, b, i, ii))(innerFrom(project(a, i))), concurrent);\n } else if (typeof resultSelector === 'number') {\n concurrent = resultSelector;\n }\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent));\n}\n","import { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nexport function mergeAll(concurrent = Infinity) {\n return mergeMap(identity, concurrent);\n}\n","import { mergeAll } from './mergeAll';\nexport function concatAll() {\n return mergeAll(1);\n}\n","import { concatAll } from '../operators/concatAll';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\nexport function concat(...args) {\n return concatAll()(from(args, popScheduler(args)));\n}\n","import { Observable } from '../Observable';\nimport { innerFrom } from './innerFrom';\nexport function defer(observableFactory) {\n return new Observable(subscriber => {\n innerFrom(observableFactory()).subscribe(subscriber);\n });\n}\n","import { Observable } from '../Observable';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { innerFrom } from './innerFrom';\nimport { popResultSelector } from '../util/args';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { createObject } from '../util/createObject';\nexport function forkJoin(...args) {\n const resultSelector = popResultSelector(args);\n const {\n args: sources,\n keys\n } = argsArgArrayOrObject(args);\n const result = new Observable(subscriber => {\n const {\n length\n } = sources;\n if (!length) {\n subscriber.complete();\n return;\n }\n const values = new Array(length);\n let remainingCompletions = length;\n let remainingEmissions = length;\n for (let sourceIndex = 0; sourceIndex < length; sourceIndex++) {\n let hasValue = false;\n innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, value => {\n if (!hasValue) {\n hasValue = true;\n remainingEmissions--;\n }\n values[sourceIndex] = value;\n }, () => remainingCompletions--, undefined, () => {\n if (!remainingCompletions || !hasValue) {\n if (!remainingEmissions) {\n subscriber.next(keys ? createObject(keys, values) : values);\n }\n subscriber.complete();\n }\n }));\n }\n });\n return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { Observable } from '../Observable';\nimport { mergeMap } from '../operators/mergeMap';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isFunction } from '../util/isFunction';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nconst nodeEventEmitterMethods = ['addListener', 'removeListener'];\nconst eventTargetMethods = ['addEventListener', 'removeEventListener'];\nconst jqueryMethods = ['on', 'off'];\nexport function fromEvent(target, eventName, options, resultSelector) {\n if (isFunction(options)) {\n resultSelector = options;\n options = undefined;\n }\n if (resultSelector) {\n return fromEvent(target, eventName, options).pipe(mapOneOrManyArgs(resultSelector));\n }\n const [add, remove] = isEventTarget(target) ? eventTargetMethods.map(methodName => handler => target[methodName](eventName, handler, options)) : isNodeStyleEventEmitter(target) ? nodeEventEmitterMethods.map(toCommonHandlerRegistry(target, eventName)) : isJQueryStyleEventEmitter(target) ? jqueryMethods.map(toCommonHandlerRegistry(target, eventName)) : [];\n if (!add) {\n if (isArrayLike(target)) {\n return mergeMap(subTarget => fromEvent(subTarget, eventName, options))(innerFrom(target));\n }\n }\n if (!add) {\n throw new TypeError('Invalid event target');\n }\n return new Observable(subscriber => {\n const handler = (...args) => subscriber.next(1 < args.length ? args : args[0]);\n add(handler);\n return () => remove(handler);\n });\n}\nfunction toCommonHandlerRegistry(target, eventName) {\n return methodName => handler => target[methodName](eventName, handler);\n}\nfunction isNodeStyleEventEmitter(target) {\n return isFunction(target.addListener) && isFunction(target.removeListener);\n}\nfunction isJQueryStyleEventEmitter(target) {\n return isFunction(target.on) && isFunction(target.off);\n}\nfunction isEventTarget(target) {\n return isFunction(target.addEventListener) && isFunction(target.removeEventListener);\n}\n","import { defer } from './defer';\nexport function iif(condition, trueResult, falseResult) {\n return defer(() => condition() ? trueResult : falseResult);\n}\n","import { Observable } from '../Observable';\nimport { async as asyncScheduler } from '../scheduler/async';\nimport { isScheduler } from '../util/isScheduler';\nimport { isValidDate } from '../util/isDate';\nexport function timer(dueTime = 0, intervalOrScheduler, scheduler = asyncScheduler) {\n let intervalDuration = -1;\n if (intervalOrScheduler != null) {\n if (isScheduler(intervalOrScheduler)) {\n scheduler = intervalOrScheduler;\n } else {\n intervalDuration = intervalOrScheduler;\n }\n }\n return new Observable(subscriber => {\n let due = isValidDate(dueTime) ? +dueTime - scheduler.now() : dueTime;\n if (due < 0) {\n due = 0;\n }\n let n = 0;\n return scheduler.schedule(function () {\n if (!subscriber.closed) {\n subscriber.next(n++);\n if (0 <= intervalDuration) {\n this.schedule(undefined, intervalDuration);\n } else {\n subscriber.complete();\n }\n }\n }, due);\n });\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { timer } from './timer';\nexport function interval(period = 0, scheduler = asyncScheduler) {\n if (period < 0) {\n period = 0;\n }\n return timer(period, period, scheduler);\n}\n","import { mergeAll } from '../operators/mergeAll';\nimport { innerFrom } from './innerFrom';\nimport { EMPTY } from './empty';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from './from';\nexport function merge(...args) {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n const sources = args;\n return !sources.length ? EMPTY : sources.length === 1 ? innerFrom(sources[0]) : mergeAll(concurrent)(from(sources, scheduler));\n}\n","import { Observable } from '../Observable';\nimport { noop } from '../util/noop';\nexport const NEVER = new Observable(noop);\nexport function never() {\n return NEVER;\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function filter(predicate, thisArg) {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, value => predicate.call(thisArg, value, index++) && subscriber.next(value)));\n });\n}\n","import { operate } from '../util/lift';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function audit(durationSelector) {\n return operate((source, subscriber) => {\n let hasValue = false;\n let lastValue = null;\n let durationSubscriber = null;\n let isComplete = false;\n const endDuration = () => {\n durationSubscriber === null || durationSubscriber === void 0 ? void 0 : durationSubscriber.unsubscribe();\n durationSubscriber = null;\n if (hasValue) {\n hasValue = false;\n const value = lastValue;\n lastValue = null;\n subscriber.next(value);\n }\n isComplete && subscriber.complete();\n };\n const cleanupDuration = () => {\n durationSubscriber = null;\n isComplete && subscriber.complete();\n };\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n hasValue = true;\n lastValue = value;\n if (!durationSubscriber) {\n innerFrom(durationSelector(value)).subscribe(durationSubscriber = createOperatorSubscriber(subscriber, endDuration, cleanupDuration));\n }\n }, () => {\n isComplete = true;\n (!hasValue || !durationSubscriber || durationSubscriber.closed) && subscriber.complete();\n }));\n });\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { audit } from './audit';\nimport { timer } from '../observable/timer';\nexport function auditTime(duration, scheduler = asyncScheduler) {\n return audit(() => timer(duration, scheduler));\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { operate } from '../util/lift';\nexport function catchError(selector) {\n return operate((source, subscriber) => {\n let innerSub = null;\n let syncUnsub = false;\n let handledResult;\n innerSub = source.subscribe(createOperatorSubscriber(subscriber, undefined, undefined, err => {\n handledResult = innerFrom(selector(err, catchError(selector)(source)));\n if (innerSub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n } else {\n syncUnsub = true;\n }\n }));\n if (syncUnsub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n }\n });\n}\n","import { createOperatorSubscriber } from './OperatorSubscriber';\nexport function scanInternals(accumulator, seed, hasSeed, emitOnNext, emitBeforeComplete) {\n return (source, subscriber) => {\n let hasState = hasSeed;\n let state = seed;\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n const i = index++;\n state = hasState ? accumulator(state, value, i) : (hasState = true, value);\n emitOnNext && subscriber.next(state);\n }, emitBeforeComplete && (() => {\n hasState && subscriber.next(state);\n subscriber.complete();\n })));\n };\n}\n","import { scanInternals } from './scanInternals';\nimport { operate } from '../util/lift';\nexport function reduce(accumulator, seed) {\n return operate(scanInternals(accumulator, seed, arguments.length >= 2, false, true));\n}\n","import { reduce } from './reduce';\nimport { operate } from '../util/lift';\nconst arrReducer = (arr, value) => (arr.push(value), arr);\nexport function toArray() {\n return operate((source, subscriber) => {\n reduce(arrReducer, [])(source).subscribe(subscriber);\n });\n}\n","import { mergeMap } from './mergeMap';\nimport { isFunction } from '../util/isFunction';\nexport function concatMap(project, resultSelector) {\n return isFunction(resultSelector) ? mergeMap(project, resultSelector, 1) : mergeMap(project, 1);\n}\n","import { Observable } from '../Observable';\nexport function fromSubscribable(subscribable) {\n return new Observable(subscriber => subscribable.subscribe(subscriber));\n}\n","import { Subject } from '../Subject';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { fromSubscribable } from '../observable/fromSubscribable';\nconst DEFAULT_CONFIG = {\n connector: () => new Subject()\n};\nexport function connect(selector, config = DEFAULT_CONFIG) {\n const {\n connector\n } = config;\n return operate((source, subscriber) => {\n const subject = connector();\n innerFrom(selector(fromSubscribable(subject))).subscribe(subscriber);\n subscriber.add(source.subscribe(subject));\n });\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function debounceTime(dueTime, scheduler = asyncScheduler) {\n return operate((source, subscriber) => {\n let activeTask = null;\n let lastValue = null;\n let lastTime = null;\n const emit = () => {\n if (activeTask) {\n activeTask.unsubscribe();\n activeTask = null;\n const value = lastValue;\n lastValue = null;\n subscriber.next(value);\n }\n };\n function emitWhenIdle() {\n const targetTime = lastTime + dueTime;\n const now = scheduler.now();\n if (now < targetTime) {\n activeTask = this.schedule(undefined, targetTime - now);\n subscriber.add(activeTask);\n return;\n }\n emit();\n }\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n lastValue = value;\n lastTime = scheduler.now();\n if (!activeTask) {\n activeTask = scheduler.schedule(emitWhenIdle, dueTime);\n subscriber.add(activeTask);\n }\n }, () => {\n emit();\n subscriber.complete();\n }, undefined, () => {\n lastValue = activeTask = null;\n }));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function defaultIfEmpty(defaultValue) {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n hasValue = true;\n subscriber.next(value);\n }, () => {\n if (!hasValue) {\n subscriber.next(defaultValue);\n }\n subscriber.complete();\n }));\n });\n}\n","import { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function take(count) {\n return count <= 0 ? () => EMPTY : operate((source, subscriber) => {\n let seen = 0;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n if (++seen <= count) {\n subscriber.next(value);\n if (count <= seen) {\n subscriber.complete();\n }\n }\n }));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { noop } from '../util/noop';\nexport function ignoreElements() {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, noop));\n });\n}\n","import { map } from './map';\nexport function mapTo(value) {\n return map(() => value);\n}\n","import { concat } from '../observable/concat';\nimport { take } from './take';\nimport { ignoreElements } from './ignoreElements';\nimport { mapTo } from './mapTo';\nimport { mergeMap } from './mergeMap';\nimport { innerFrom } from '../observable/innerFrom';\nexport function delayWhen(delayDurationSelector, subscriptionDelay) {\n if (subscriptionDelay) {\n return source => concat(subscriptionDelay.pipe(take(1), ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));\n }\n return mergeMap((value, index) => innerFrom(delayDurationSelector(value, index)).pipe(take(1), mapTo(value)));\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { delayWhen } from './delayWhen';\nimport { timer } from '../observable/timer';\nexport function delay(due, scheduler = asyncScheduler) {\n const duration = timer(due, scheduler);\n return delayWhen(() => duration);\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { noop } from '../util/noop';\nimport { innerFrom } from '../observable/innerFrom';\nexport function distinct(keySelector, flushes) {\n return operate((source, subscriber) => {\n const distinctKeys = new Set();\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n const key = keySelector ? keySelector(value) : value;\n if (!distinctKeys.has(key)) {\n distinctKeys.add(key);\n subscriber.next(value);\n }\n }));\n flushes && innerFrom(flushes).subscribe(createOperatorSubscriber(subscriber, () => distinctKeys.clear(), noop));\n });\n}\n","import { identity } from '../util/identity';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function distinctUntilChanged(comparator, keySelector = identity) {\n comparator = comparator !== null && comparator !== void 0 ? comparator : defaultCompare;\n return operate((source, subscriber) => {\n let previousKey;\n let first = true;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n const currentKey = keySelector(value);\n if (first || !comparator(previousKey, currentKey)) {\n first = false;\n previousKey = currentKey;\n subscriber.next(value);\n }\n }));\n });\n}\nfunction defaultCompare(a, b) {\n return a === b;\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function throwIfEmpty(errorFactory = defaultErrorFactory) {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n hasValue = true;\n subscriber.next(value);\n }, () => hasValue ? subscriber.complete() : subscriber.error(errorFactory())));\n });\n}\nfunction defaultErrorFactory() {\n return new EmptyError();\n}\n","import { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nexport function expand(project, concurrent = Infinity, scheduler) {\n concurrent = (concurrent || 0) < 1 ? Infinity : concurrent;\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent, undefined, true, scheduler));\n}\n","import { operate } from '../util/lift';\nexport function finalize(callback) {\n return operate((source, subscriber) => {\n try {\n source.subscribe(subscriber);\n } finally {\n subscriber.add(callback);\n }\n });\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { take } from './take';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { identity } from '../util/identity';\nexport function first(predicate, defaultValue) {\n const hasDefaultValue = arguments.length >= 2;\n return source => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function takeLast(count) {\n return count <= 0 ? () => EMPTY : operate((source, subscriber) => {\n let buffer = [];\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n buffer.push(value);\n count < buffer.length && buffer.shift();\n }, () => {\n for (const value of buffer) {\n subscriber.next(value);\n }\n subscriber.complete();\n }, undefined, () => {\n buffer = null;\n }));\n });\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { takeLast } from './takeLast';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { identity } from '../util/identity';\nexport function last(predicate, defaultValue) {\n const hasDefaultValue = arguments.length >= 2;\n return source => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, takeLast(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { ConnectableObservable } from '../observable/ConnectableObservable';\nimport { isFunction } from '../util/isFunction';\nimport { connect } from './connect';\nexport function multicast(subjectOrSubjectFactory, selector) {\n const subjectFactory = isFunction(subjectOrSubjectFactory) ? subjectOrSubjectFactory : () => subjectOrSubjectFactory;\n if (isFunction(selector)) {\n return connect(selector, {\n connector: subjectFactory\n });\n }\n return source => new ConnectableObservable(source, subjectFactory);\n}\n","import { Subject } from '../Subject';\nimport { multicast } from './multicast';\nimport { connect } from './connect';\nexport function publish(selector) {\n return selector ? source => connect(selector)(source) : source => multicast(new Subject())(source);\n}\n","import { operate } from '../util/lift';\nimport { scanInternals } from './scanInternals';\nexport function scan(accumulator, seed) {\n return operate(scanInternals(accumulator, seed, arguments.length >= 2, true));\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { Subject } from '../Subject';\nimport { SafeSubscriber } from '../Subscriber';\nimport { operate } from '../util/lift';\nexport function share(options = {}) {\n const {\n connector = () => new Subject(),\n resetOnError = true,\n resetOnComplete = true,\n resetOnRefCountZero = true\n } = options;\n return wrapperSource => {\n let connection;\n let resetConnection;\n let subject;\n let refCount = 0;\n let hasCompleted = false;\n let hasErrored = false;\n const cancelReset = () => {\n resetConnection === null || resetConnection === void 0 ? void 0 : resetConnection.unsubscribe();\n resetConnection = undefined;\n };\n const reset = () => {\n cancelReset();\n connection = subject = undefined;\n hasCompleted = hasErrored = false;\n };\n const resetAndUnsubscribe = () => {\n const conn = connection;\n reset();\n conn === null || conn === void 0 ? void 0 : conn.unsubscribe();\n };\n return operate((source, subscriber) => {\n refCount++;\n if (!hasErrored && !hasCompleted) {\n cancelReset();\n }\n const dest = subject = subject !== null && subject !== void 0 ? subject : connector();\n subscriber.add(() => {\n refCount--;\n if (refCount === 0 && !hasErrored && !hasCompleted) {\n resetConnection = handleReset(resetAndUnsubscribe, resetOnRefCountZero);\n }\n });\n dest.subscribe(subscriber);\n if (!connection && refCount > 0) {\n connection = new SafeSubscriber({\n next: value => dest.next(value),\n error: err => {\n hasErrored = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnError, err);\n dest.error(err);\n },\n complete: () => {\n hasCompleted = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnComplete);\n dest.complete();\n }\n });\n innerFrom(source).subscribe(connection);\n }\n })(wrapperSource);\n };\n}\nfunction handleReset(reset, on, ...args) {\n if (on === true) {\n reset();\n return;\n }\n if (on === false) {\n return;\n }\n const onSubscriber = new SafeSubscriber({\n next: () => {\n onSubscriber.unsubscribe();\n reset();\n }\n });\n return innerFrom(on(...args)).subscribe(onSubscriber);\n}\n","import { ReplaySubject } from '../ReplaySubject';\nimport { share } from './share';\nexport function shareReplay(configOrBufferSize, windowTime, scheduler) {\n let bufferSize;\n let refCount = false;\n if (configOrBufferSize && typeof configOrBufferSize === 'object') {\n ({\n bufferSize = Infinity,\n windowTime = Infinity,\n refCount = false,\n scheduler\n } = configOrBufferSize);\n } else {\n bufferSize = configOrBufferSize !== null && configOrBufferSize !== void 0 ? configOrBufferSize : Infinity;\n }\n return share({\n connector: () => new ReplaySubject(bufferSize, windowTime, scheduler),\n resetOnError: true,\n resetOnComplete: false,\n resetOnRefCountZero: refCount\n });\n}\n","import { filter } from './filter';\nexport function skip(count) {\n return filter((_, index) => count <= index);\n}\n","import { concat } from '../observable/concat';\nimport { popScheduler } from '../util/args';\nimport { operate } from '../util/lift';\nexport function startWith(...values) {\n const scheduler = popScheduler(values);\n return operate((source, subscriber) => {\n (scheduler ? concat(values, source, scheduler) : concat(values, source)).subscribe(subscriber);\n });\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function switchMap(project, resultSelector) {\n return operate((source, subscriber) => {\n let innerSubscriber = null;\n let index = 0;\n let isComplete = false;\n const checkComplete = () => isComplete && !innerSubscriber && subscriber.complete();\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n innerSubscriber === null || innerSubscriber === void 0 ? void 0 : innerSubscriber.unsubscribe();\n let innerIndex = 0;\n const outerIndex = index++;\n innerFrom(project(value, outerIndex)).subscribe(innerSubscriber = createOperatorSubscriber(subscriber, innerValue => subscriber.next(resultSelector ? resultSelector(value, innerValue, outerIndex, innerIndex++) : innerValue), () => {\n innerSubscriber = null;\n checkComplete();\n }));\n }, () => {\n isComplete = true;\n checkComplete();\n }));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\nexport function takeUntil(notifier) {\n return operate((source, subscriber) => {\n innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => subscriber.complete(), noop));\n !subscriber.closed && source.subscribe(subscriber);\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function takeWhile(predicate, inclusive = false) {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n const result = predicate(value, index++);\n (result || inclusive) && subscriber.next(value);\n !result && subscriber.complete();\n }));\n });\n}\n","import { isFunction } from '../util/isFunction';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { identity } from '../util/identity';\nexport function tap(observerOrNext, error, complete) {\n const tapObserver = isFunction(observerOrNext) || error || complete ? {\n next: observerOrNext,\n error,\n complete\n } : observerOrNext;\n return tapObserver ? operate((source, subscriber) => {\n var _a;\n (_a = tapObserver.subscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n let isUnsub = true;\n source.subscribe(createOperatorSubscriber(subscriber, value => {\n var _a;\n (_a = tapObserver.next) === null || _a === void 0 ? void 0 : _a.call(tapObserver, value);\n subscriber.next(value);\n }, () => {\n var _a;\n isUnsub = false;\n (_a = tapObserver.complete) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n subscriber.complete();\n }, err => {\n var _a;\n isUnsub = false;\n (_a = tapObserver.error) === null || _a === void 0 ? void 0 : _a.call(tapObserver, err);\n subscriber.error(err);\n }, () => {\n var _a, _b;\n if (isUnsub) {\n (_a = tapObserver.unsubscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n }\n (_b = tapObserver.finalize) === null || _b === void 0 ? void 0 : _b.call(tapObserver);\n }));\n }) : identity;\n}\n","/**\n * @license Angular v17.2.4\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { SIGNAL_NODE as SIGNAL_NODE$1, signalSetFn as signalSetFn$1, producerAccessed as producerAccessed$1, SIGNAL as SIGNAL$1, setActiveConsumer as setActiveConsumer$1, getActiveConsumer as getActiveConsumer$1, consumerDestroy as consumerDestroy$1, REACTIVE_NODE as REACTIVE_NODE$1, consumerBeforeComputation as consumerBeforeComputation$1, consumerAfterComputation as consumerAfterComputation$1, consumerPollProducersForChange as consumerPollProducersForChange$1, createSignal as createSignal$1, signalUpdateFn as signalUpdateFn$1, createComputed as createComputed$1, setThrowInvalidWriteToSignalError as setThrowInvalidWriteToSignalError$1, createWatch as createWatch$1 } from '@angular/core/primitives/signals';\nimport { Subject, Subscription, BehaviorSubject } from 'rxjs';\nimport { map, first } from 'rxjs/operators';\n\n/**\n * Base URL for the error details page.\n *\n * Keep this constant in sync across:\n * - packages/compiler-cli/src/ngtsc/diagnostics/src/error_details_base_url.ts\n * - packages/core/src/error_details_base_url.ts\n */\nconst ERROR_DETAILS_PAGE_BASE_URL = 'https://angular.io/errors';\n/**\n * URL for the XSS security documentation.\n */\nconst XSS_SECURITY_URL = 'https://g.co/ng/security#xss';\n\n/**\n * Class that represents a runtime error.\n * Formats and outputs the error message in a consistent way.\n *\n * Example:\n * ```\n * throw new RuntimeError(\n * RuntimeErrorCode.INJECTOR_ALREADY_DESTROYED,\n * ngDevMode && 'Injector has already been destroyed.');\n * ```\n *\n * Note: the `message` argument contains a descriptive error message as a string in development\n * mode (when the `ngDevMode` is defined). In production mode (after tree-shaking pass), the\n * `message` argument becomes `false`, thus we account for it in the typings and the runtime\n * logic.\n */\nclass RuntimeError extends Error {\n constructor(code, message) {\n super(formatRuntimeError(code, message));\n this.code = code;\n }\n}\n/**\n * Called to format a runtime error.\n * See additional info on the `message` argument type in the `RuntimeError` class description.\n */\nfunction formatRuntimeError(code, message) {\n // Error code might be a negative number, which is a special marker that instructs the logic to\n // generate a link to the error details page on angular.io.\n // We also prepend `0` to non-compile-time errors.\n const fullCode = `NG0${Math.abs(code)}`;\n let errorMessage = `${fullCode}${message ? ': ' + message : ''}`;\n if (ngDevMode && code < 0) {\n const addPeriodSeparator = !errorMessage.match(/[.,;!?\\n]$/);\n const separator = addPeriodSeparator ? '.' : '';\n errorMessage = `${errorMessage}${separator} Find more at ${ERROR_DETAILS_PAGE_BASE_URL}/${fullCode}`;\n }\n return errorMessage;\n}\nconst REQUIRED_UNSET_VALUE = /* @__PURE__ */Symbol('InputSignalNode#UNSET');\n// Note: Using an IIFE here to ensure that the spread assignment is not considered\n// a side-effect, ending up preserving `COMPUTED_NODE` and `REACTIVE_NODE`.\n// TODO: remove when https://github.com/evanw/esbuild/issues/3392 is resolved.\nconst INPUT_SIGNAL_NODE = /* @__PURE__ */(() => {\n return {\n ...SIGNAL_NODE$1,\n transformFn: undefined,\n applyValueToInputSignal(node, value) {\n signalSetFn$1(node, value);\n }\n };\n})();\nconst ɵINPUT_SIGNAL_BRAND_READ_TYPE = /* @__PURE__ */Symbol();\nconst ɵINPUT_SIGNAL_BRAND_WRITE_TYPE = /* @__PURE__ */Symbol();\n/**\n * Creates an input signal.\n *\n * @param initialValue The initial value.\n * Can be set to {@link REQUIRED_UNSET_VALUE} for required inputs.\n * @param options Additional options for the input. e.g. a transform, or an alias.\n */\nfunction createInputSignal(initialValue, options) {\n const node = Object.create(INPUT_SIGNAL_NODE);\n node.value = initialValue;\n // Perf note: Always set `transformFn` here to ensure that `node` always\n // has the same v8 class shape, allowing monomorphic reads on input signals.\n node.transformFn = options?.transform;\n function inputValueFn() {\n // Record that someone looked at this signal.\n producerAccessed$1(node);\n if (node.value === REQUIRED_UNSET_VALUE) {\n throw new RuntimeError(-950 /* RuntimeErrorCode.REQUIRED_INPUT_NO_VALUE */, ngDevMode && 'Input is required but no value is available yet.');\n }\n return node.value;\n }\n inputValueFn[SIGNAL$1] = node;\n if (ngDevMode) {\n inputValueFn.toString = () => `[Input Signal: ${inputValueFn()}]`;\n }\n return inputValueFn;\n}\nclass EventEmitter_ extends Subject {\n constructor(isAsync = false) {\n super();\n this.__isAsync = isAsync;\n }\n emit(value) {\n const prevConsumer = setActiveConsumer$1(null);\n try {\n super.next(value);\n } finally {\n setActiveConsumer$1(prevConsumer);\n }\n }\n subscribe(observerOrNext, error, complete) {\n let nextFn = observerOrNext;\n let errorFn = error || (() => null);\n let completeFn = complete;\n if (observerOrNext && typeof observerOrNext === 'object') {\n const observer = observerOrNext;\n nextFn = observer.next?.bind(observer);\n errorFn = observer.error?.bind(observer);\n completeFn = observer.complete?.bind(observer);\n }\n if (this.__isAsync) {\n errorFn = _wrapInTimeout(errorFn);\n if (nextFn) {\n nextFn = _wrapInTimeout(nextFn);\n }\n if (completeFn) {\n completeFn = _wrapInTimeout(completeFn);\n }\n }\n const sink = super.subscribe({\n next: nextFn,\n error: errorFn,\n complete: completeFn\n });\n if (observerOrNext instanceof Subscription) {\n observerOrNext.add(sink);\n }\n return sink;\n }\n}\nfunction _wrapInTimeout(fn) {\n return value => {\n setTimeout(fn, undefined, value);\n };\n}\n/**\n * @publicApi\n */\nconst EventEmitter = EventEmitter_;\n\n/**\n * The `outputs` function allows declaration of outputs in directives and\n * components.\n *\n * Initializes an output that can emit values to consumers of your\n * directive/component.\n *\n * @usageNotes\n * Initialize an output in your directive by declaring a\n * class field and initializing it with the `output()` function.\n *\n * ```ts\n * @Directive({..})\n * export class MyDir {\n * nameChange = output(); // OutputEmitter\n * onClick = output(); // OutputEmitter\n * }\n * ```\n *\n * @developerPreview\n */\nfunction output(opts) {\n return new EventEmitter();\n}\nfunction inputFunction(initialValue, opts) {\n return createInputSignal(initialValue, opts);\n}\nfunction inputRequiredFunction(opts) {\n return createInputSignal(REQUIRED_UNSET_VALUE, opts);\n}\n/**\n * The `input` function allows declaration of inputs in directives and\n * components.\n *\n * Initializes an input with an initial value. If no explicit value\n * is specified, Angular will use `undefined`.\n *\n * Consider using `input.required` for inputs that don't need an\n * initial value.\n *\n * @usageNotes\n * Initialize an input in your directive or component by declaring a\n * class field and initializing it with the `input()` function.\n *\n * ```ts\n * @Directive({..})\n * export class MyDir {\n * firstName = input(); // string|undefined\n * lastName = input.required(); // string\n * age = input(0); // number\n * }\n * ```\n *\n * @developerPreview\n */\nconst input = /*#__PURE__*/(() => {\n // Note: This may be considered a side-effect, but nothing will depend on\n // this assignment, unless this `input` constant export is accessed. It's a\n // self-contained side effect that is local to the user facing`input` export.\n inputFunction.required = inputRequiredFunction;\n return inputFunction;\n})();\n\n/**\n * Injection flags for DI.\n *\n * @publicApi\n * @deprecated use an options object for [`inject`](api/core/inject) instead.\n */\nvar InjectFlags = /*#__PURE__*/function (InjectFlags) {\n // TODO(alxhub): make this 'const' (and remove `InternalInjectFlags` enum) when ngc no longer\n // writes exports of it into ngfactory files.\n /** Check self and check parent injector if needed */\n InjectFlags[InjectFlags[\"Default\"] = 0] = \"Default\";\n /**\n * Specifies that an injector should retrieve a dependency from any injector until reaching the\n * host element of the current component. (Only used with Element Injector)\n */\n InjectFlags[InjectFlags[\"Host\"] = 1] = \"Host\";\n /** Don't ascend to ancestors of the node requesting injection. */\n InjectFlags[InjectFlags[\"Self\"] = 2] = \"Self\";\n /** Skip the node that is requesting injection. */\n InjectFlags[InjectFlags[\"SkipSelf\"] = 4] = \"SkipSelf\";\n /** Inject `defaultValue` instead if token not found. */\n InjectFlags[InjectFlags[\"Optional\"] = 8] = \"Optional\";\n return InjectFlags;\n}(InjectFlags || {});\nfunction stringify(token) {\n if (typeof token === 'string') {\n return token;\n }\n if (Array.isArray(token)) {\n return '[' + token.map(stringify).join(', ') + ']';\n }\n if (token == null) {\n return '' + token;\n }\n if (token.overriddenName) {\n return `${token.overriddenName}`;\n }\n if (token.name) {\n return `${token.name}`;\n }\n const res = token.toString();\n if (res == null) {\n return '' + res;\n }\n const newLineIndex = res.indexOf('\\n');\n return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\n/**\n * Concatenates two strings with separator, allocating new strings only when necessary.\n *\n * @param before before string.\n * @param separator separator string.\n * @param after after string.\n * @returns concatenated string.\n */\nfunction concatStringsWithSpace(before, after) {\n return before == null || before === '' ? after === null ? '' : after : after == null || after === '' ? before : before + ' ' + after;\n}\n/**\n * Ellipses the string in the middle when longer than the max length\n *\n * @param string\n * @param maxLength of the output string\n * @returns ellipsed string with ... in the middle\n */\nfunction truncateMiddle(str, maxLength = 100) {\n if (!str || maxLength < 1 || str.length <= maxLength) return str;\n if (maxLength == 1) return str.substring(0, 1) + '...';\n const halfLimit = Math.round(maxLength / 2);\n return str.substring(0, halfLimit) + '...' + str.substring(str.length - halfLimit);\n}\n\n// The functions in this file verify that the assumptions we are making\nfunction assertNumber(actual, msg) {\n if (!(typeof actual === 'number')) {\n throwError(msg, typeof actual, 'number', '===');\n }\n}\nfunction assertNumberInRange(actual, minInclusive, maxInclusive) {\n assertNumber(actual, 'Expected a number');\n assertLessThanOrEqual(actual, maxInclusive, 'Expected number to be less than or equal to');\n assertGreaterThanOrEqual(actual, minInclusive, 'Expected number to be greater than or equal to');\n}\nfunction assertString(actual, msg) {\n if (!(typeof actual === 'string')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');\n }\n}\nfunction assertFunction(actual, msg) {\n if (!(typeof actual === 'function')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'function', '===');\n }\n}\nfunction assertEqual(actual, expected, msg) {\n if (!(actual == expected)) {\n throwError(msg, actual, expected, '==');\n }\n}\nfunction assertNotEqual(actual, expected, msg) {\n if (!(actual != expected)) {\n throwError(msg, actual, expected, '!=');\n }\n}\nfunction assertSame(actual, expected, msg) {\n if (!(actual === expected)) {\n throwError(msg, actual, expected, '===');\n }\n}\nfunction assertNotSame(actual, expected, msg) {\n if (!(actual !== expected)) {\n throwError(msg, actual, expected, '!==');\n }\n}\nfunction assertLessThan(actual, expected, msg) {\n if (!(actual < expected)) {\n throwError(msg, actual, expected, '<');\n }\n}\nfunction assertLessThanOrEqual(actual, expected, msg) {\n if (!(actual <= expected)) {\n throwError(msg, actual, expected, '<=');\n }\n}\nfunction assertGreaterThan(actual, expected, msg) {\n if (!(actual > expected)) {\n throwError(msg, actual, expected, '>');\n }\n}\nfunction assertGreaterThanOrEqual(actual, expected, msg) {\n if (!(actual >= expected)) {\n throwError(msg, actual, expected, '>=');\n }\n}\nfunction assertNotDefined(actual, msg) {\n if (actual != null) {\n throwError(msg, actual, null, '==');\n }\n}\nfunction assertDefined(actual, msg) {\n if (actual == null) {\n throwError(msg, actual, null, '!=');\n }\n}\nfunction throwError(msg, actual, expected, comparison) {\n throw new Error(`ASSERTION ERROR: ${msg}` + (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));\n}\nfunction assertDomNode(node) {\n if (!(node instanceof Node)) {\n throwError(`The provided value must be an instance of a DOM Node but got ${stringify(node)}`);\n }\n}\nfunction assertElement(node) {\n if (!(node instanceof Element)) {\n throwError(`The provided value must be an element but got ${stringify(node)}`);\n }\n}\nfunction assertIndexInRange(arr, index) {\n assertDefined(arr, 'Array must be defined.');\n const maxLen = arr.length;\n if (index < 0 || index >= maxLen) {\n throwError(`Index expected to be less than ${maxLen} but got ${index}`);\n }\n}\nfunction assertOneOf(value, ...validValues) {\n if (validValues.indexOf(value) !== -1) return true;\n throwError(`Expected value to be one of ${JSON.stringify(validValues)} but was ${JSON.stringify(value)}.`);\n}\nfunction assertNotReactive(fn) {\n if (getActiveConsumer$1() !== null) {\n throwError(`${fn}() should never be called in a reactive context.`);\n }\n}\n\n/**\n * The strategy that the default change detector uses to detect changes.\n * When set, takes effect the next time change detection is triggered.\n *\n * @see {@link ChangeDetectorRef#usage-notes Change detection usage}\n *\n * @publicApi\n */\nvar ChangeDetectionStrategy = /*#__PURE__*/function (ChangeDetectionStrategy) {\n /**\n * Use the `CheckOnce` strategy, meaning that automatic change detection is deactivated\n * until reactivated by setting the strategy to `Default` (`CheckAlways`).\n * Change detection can still be explicitly invoked.\n * This strategy applies to all child directives and cannot be overridden.\n */\n ChangeDetectionStrategy[ChangeDetectionStrategy[\"OnPush\"] = 0] = \"OnPush\";\n /**\n * Use the default `CheckAlways` strategy, in which change detection is automatic until\n * explicitly deactivated.\n */\n ChangeDetectionStrategy[ChangeDetectionStrategy[\"Default\"] = 1] = \"Default\";\n return ChangeDetectionStrategy;\n}(ChangeDetectionStrategy || {});\n/**\n * Defines the CSS styles encapsulation policies for the {@link Component} decorator's\n * `encapsulation` option.\n *\n * See {@link Component#encapsulation encapsulation}.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/ts/metadata/encapsulation.ts region='longform'}\n *\n * @publicApi\n */\nvar ViewEncapsulation$1 = /*#__PURE__*/function (ViewEncapsulation) {\n // TODO: consider making `ViewEncapsulation` a `const enum` instead. See\n // https://github.com/angular/angular/issues/44119 for additional information.\n /**\n * Emulates a native Shadow DOM encapsulation behavior by adding a specific attribute to the\n * component's host element and applying the same attribute to all the CSS selectors provided\n * via {@link Component#styles styles} or {@link Component#styleUrls styleUrls}.\n *\n * This is the default option.\n */\n ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\";\n // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n /**\n * Doesn't provide any sort of CSS style encapsulation, meaning that all the styles provided\n * via {@link Component#styles styles} or {@link Component#styleUrls styleUrls} are applicable\n * to any HTML element of the application regardless of their host Component.\n */\n ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n /**\n * Uses the browser's native Shadow DOM API to encapsulate CSS styles, meaning that it creates\n * a ShadowRoot for the component's host element which is then used to encapsulate\n * all the Component's styling.\n */\n ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n return ViewEncapsulation;\n}(ViewEncapsulation$1 || {});\n/**\n * Convince closure compiler that the wrapped function has no side-effects.\n *\n * Closure compiler always assumes that `toString` has no side-effects. We use this quirk to\n * allow us to execute a function but have closure compiler mark the call as no-side-effects.\n * It is important that the return value for the `noSideEffects` function be assigned\n * to something which is retained otherwise the call to `noSideEffects` will be removed by closure\n * compiler.\n */\nfunction noSideEffects(fn) {\n return {\n toString: fn\n }.toString();\n}\nconst _global = globalThis;\nfunction ngDevModeResetPerfCounters() {\n const locationString = typeof location !== 'undefined' ? location.toString() : '';\n const newCounters = {\n namedConstructors: locationString.indexOf('ngDevMode=namedConstructors') != -1,\n firstCreatePass: 0,\n tNode: 0,\n tView: 0,\n rendererCreateTextNode: 0,\n rendererSetText: 0,\n rendererCreateElement: 0,\n rendererAddEventListener: 0,\n rendererSetAttribute: 0,\n rendererRemoveAttribute: 0,\n rendererSetProperty: 0,\n rendererSetClassName: 0,\n rendererAddClass: 0,\n rendererRemoveClass: 0,\n rendererSetStyle: 0,\n rendererRemoveStyle: 0,\n rendererDestroy: 0,\n rendererDestroyNode: 0,\n rendererMoveNode: 0,\n rendererRemoveNode: 0,\n rendererAppendChild: 0,\n rendererInsertBefore: 0,\n rendererCreateComment: 0,\n hydratedNodes: 0,\n hydratedComponents: 0,\n dehydratedViewsRemoved: 0,\n dehydratedViewsCleanupRuns: 0,\n componentsSkippedHydration: 0\n };\n // Make sure to refer to ngDevMode as ['ngDevMode'] for closure.\n const allowNgDevModeTrue = locationString.indexOf('ngDevMode=false') === -1;\n if (!allowNgDevModeTrue) {\n _global['ngDevMode'] = false;\n } else {\n if (typeof _global['ngDevMode'] !== 'object') {\n _global['ngDevMode'] = {};\n }\n Object.assign(_global['ngDevMode'], newCounters);\n }\n return newCounters;\n}\n/**\n * This function checks to see if the `ngDevMode` has been set. If yes,\n * then we honor it, otherwise we default to dev mode with additional checks.\n *\n * The idea is that unless we are doing production build where we explicitly\n * set `ngDevMode == false` we should be helping the developer by providing\n * as much early warning and errors as possible.\n *\n * `ɵɵdefineComponent` is guaranteed to have been called before any component template functions\n * (and thus Ivy instructions), so a single initialization there is sufficient to ensure ngDevMode\n * is defined for the entire instruction set.\n *\n * When checking `ngDevMode` on toplevel, always init it before referencing it\n * (e.g. `((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode())`), otherwise you can\n * get a `ReferenceError` like in https://github.com/angular/angular/issues/31595.\n *\n * Details on possible values for `ngDevMode` can be found on its docstring.\n *\n * NOTE:\n * - changes to the `ngDevMode` name must be synced with `compiler-cli/src/tooling.ts`.\n */\nfunction initNgDevMode() {\n // The below checks are to ensure that calling `initNgDevMode` multiple times does not\n // reset the counters.\n // If the `ngDevMode` is not an object, then it means we have not created the perf counters\n // yet.\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (typeof ngDevMode !== 'object' || Object.keys(ngDevMode).length === 0) {\n ngDevModeResetPerfCounters();\n }\n return typeof ngDevMode !== 'undefined' && !!ngDevMode;\n }\n return false;\n}\n\n/**\n * This file contains reuseable \"empty\" symbols that can be used as default return values\n * in different parts of the rendering code. Because the same symbols are returned, this\n * allows for identity checks against these values to be consistently used by the framework\n * code.\n */\nconst EMPTY_OBJ = {};\nconst EMPTY_ARRAY = [];\n// freezing the values prevents any code from accidentally inserting new values in\nif ((typeof ngDevMode === 'undefined' || ngDevMode) && /*#__PURE__*/initNgDevMode()) {\n // These property accesses can be ignored because ngDevMode will be set to false\n // when optimizing code and the whole if statement will be dropped.\n // tslint:disable-next-line:no-toplevel-property-access\n /*#__PURE__*/Object.freeze(EMPTY_OBJ);\n // tslint:disable-next-line:no-toplevel-property-access\n /*#__PURE__*/Object.freeze(EMPTY_ARRAY);\n}\nfunction getClosureSafeProperty(objWithPropertyToExtract) {\n for (let key in objWithPropertyToExtract) {\n if (objWithPropertyToExtract[key] === getClosureSafeProperty) {\n return key;\n }\n }\n throw Error('Could not find renamed property on target object.');\n}\n/**\n * Sets properties on a target object from a source object, but only if\n * the property doesn't already exist on the target object.\n * @param target The target to set properties on\n * @param source The source of the property keys and values to set\n */\nfunction fillProperties(target, source) {\n for (const key in source) {\n if (source.hasOwnProperty(key) && !target.hasOwnProperty(key)) {\n target[key] = source[key];\n }\n }\n}\nconst NG_COMP_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵcmp: getClosureSafeProperty\n});\nconst NG_DIR_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵdir: getClosureSafeProperty\n});\nconst NG_PIPE_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵpipe: getClosureSafeProperty\n});\nconst NG_MOD_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵmod: getClosureSafeProperty\n});\nconst NG_FACTORY_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵfac: getClosureSafeProperty\n});\n/**\n * If a directive is diPublic, bloomAdd sets a property on the type with this constant as\n * the key and the directive's unique ID as the value. This allows us to map directives to their\n * bloom filter bit for DI.\n */\n// TODO(misko): This is wrong. The NG_ELEMENT_ID should never be minified.\nconst NG_ELEMENT_ID = /*#__PURE__*/getClosureSafeProperty({\n __NG_ELEMENT_ID__: getClosureSafeProperty\n});\n/**\n * The `NG_ENV_ID` field on a DI token indicates special processing in the `EnvironmentInjector`:\n * getting such tokens from the `EnvironmentInjector` will bypass the standard DI resolution\n * strategy and instead will return implementation produced by the `NG_ENV_ID` factory function.\n *\n * This particular retrieval of DI tokens is mostly done to eliminate circular dependencies and\n * improve tree-shaking.\n */\nconst NG_ENV_ID = /*#__PURE__*/getClosureSafeProperty({\n __NG_ENV_ID__: getClosureSafeProperty\n});\n\n/** Flags describing an input for a directive. */\nvar InputFlags = /*#__PURE__*/function (InputFlags) {\n InputFlags[InputFlags[\"None\"] = 0] = \"None\";\n InputFlags[InputFlags[\"SignalBased\"] = 1] = \"SignalBased\";\n InputFlags[InputFlags[\"HasDecoratorInputTransform\"] = 2] = \"HasDecoratorInputTransform\";\n return InputFlags;\n}(InputFlags || {});\n/**\n * Returns an index of `classToSearch` in `className` taking token boundaries into account.\n *\n * `classIndexOf('AB A', 'A', 0)` will be 3 (not 0 since `AB!==A`)\n *\n * @param className A string containing classes (whitespace separated)\n * @param classToSearch A class name to locate\n * @param startingIndex Starting location of search\n * @returns an index of the located class (or -1 if not found)\n */\nfunction classIndexOf(className, classToSearch, startingIndex) {\n ngDevMode && assertNotEqual(classToSearch, '', 'can not look for \"\" string.');\n let end = className.length;\n while (true) {\n const foundIndex = className.indexOf(classToSearch, startingIndex);\n if (foundIndex === -1) return foundIndex;\n if (foundIndex === 0 || className.charCodeAt(foundIndex - 1) <= 32 /* CharCode.SPACE */) {\n // Ensure that it has leading whitespace\n const length = classToSearch.length;\n if (foundIndex + length === end || className.charCodeAt(foundIndex + length) <= 32 /* CharCode.SPACE */) {\n // Ensure that it has trailing whitespace\n return foundIndex;\n }\n }\n // False positive, keep searching from where we left off.\n startingIndex = foundIndex + 1;\n }\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 */\nfunction setUpAttributes(renderer, native, attrs) {\n let i = 0;\n while (i < attrs.length) {\n const value = attrs[i];\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 /* AttributeMarker.NamespaceURI */) {\n break;\n }\n // we just landed on the marker value ... therefore\n // we should skip to the next entry\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];\n // Standard attributes\n ngDevMode && ngDevMode.rendererSetAttribute++;\n if (isAnimationProp(attrName)) {\n renderer.setProperty(native, attrName, attrVal);\n } else {\n renderer.setAttribute(native, attrName, attrVal);\n }\n i++;\n }\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 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 */\nfunction isNameOnlyAttributeMarker(marker) {\n return marker === 3 /* AttributeMarker.Bindings */ || marker === 4 /* AttributeMarker.Template */ || marker === 6 /* AttributeMarker.I18n */;\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 /* CharCode.AT_SIGN */;\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 */\nfunction mergeHostAttrs(dst, src) {\n if (src === null || src.length === 0) {\n // 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 /* AttributeMarker.ImplicitAttributes */;\n for (let i = 0; i < src.length; i++) {\n const item = src[i];\n if (typeof item === 'number') {\n srcMarker = item;\n } else {\n if (srcMarker === 0 /* AttributeMarker.NamespaceURI */) {\n // Case where we need to consume `key1`, `key2`, `value` items.\n } else if (srcMarker === -1 /* AttributeMarker.ImplicitAttributes */ || srcMarker === 2 /* AttributeMarker.Styles */) {\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 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 */\nfunction mergeHostAttribute(dst, marker, key1, key2, value) {\n let i = 0;\n // Assume that new markers will be inserted at the end.\n let markerInsertPosition = dst.length;\n // scan until correct type.\n if (marker === -1 /* AttributeMarker.ImplicitAttributes */) {\n markerInsertPosition = -1;\n } else {\n while (i < dst.length) {\n const dstValue = dst[i++];\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 }\n // search until you find place of insertion\n while (i < dst.length) {\n const item = dst[i];\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 return;\n } else if (key2 === dst[i + 1]) {\n dst[i + 2] = value;\n return;\n }\n }\n // Increment counter.\n i++;\n if (key2 !== null) i++;\n if (value !== null) i++;\n }\n // insert at location.\n if (markerInsertPosition !== -1) {\n dst.splice(markerInsertPosition, 0, marker);\n i = markerInsertPosition + 1;\n }\n dst.splice(i++, 0, key1);\n if (key2 !== null) {\n dst.splice(i++, 0, key2);\n }\n if (value !== null) {\n dst.splice(i++, 0, value);\n }\n}\nconst NG_TEMPLATE_SELECTOR = 'ng-template';\n/**\n * Search the `TAttributes` to see if it contains `cssClassToMatch` (case insensitive)\n *\n * @param attrs `TAttributes` to search through.\n * @param cssClassToMatch class to match (lowercase)\n * @param isProjectionMode Whether or not class matching should look into the attribute `class` in\n * addition to the `AttributeMarker.Classes`.\n */\nfunction isCssClassMatching(attrs, cssClassToMatch, isProjectionMode) {\n // TODO(misko): The fact that this function needs to know about `isProjectionMode` seems suspect.\n // It is strange to me that sometimes the class information comes in form of `class` attribute\n // and sometimes in form of `AttributeMarker.Classes`. Some investigation is needed to determine\n // if that is the right behavior.\n ngDevMode && assertEqual(cssClassToMatch, cssClassToMatch.toLowerCase(), 'Class name expected to be lowercase.');\n let i = 0;\n // Indicates whether we are processing value from the implicit\n // attribute section (i.e. before the first marker in the array).\n let isImplicitAttrsSection = true;\n while (i < attrs.length) {\n let item = attrs[i++];\n if (typeof item === 'string' && isImplicitAttrsSection) {\n const value = attrs[i++];\n if (isProjectionMode && item === 'class') {\n // We found a `class` attribute in the implicit attribute section,\n // check if it matches the value of the `cssClassToMatch` argument.\n if (classIndexOf(value.toLowerCase(), cssClassToMatch, 0) !== -1) {\n return true;\n }\n }\n } else if (item === 1 /* AttributeMarker.Classes */) {\n // We found the classes section. Start searching for the class.\n while (i < attrs.length && typeof (item = attrs[i++]) == 'string') {\n // while we have strings\n if (item.toLowerCase() === cssClassToMatch) return true;\n }\n return false;\n } else if (typeof item === 'number') {\n // We've came across a first marker, which indicates\n // that the implicit attribute section is over.\n isImplicitAttrsSection = false;\n }\n }\n return false;\n}\n/**\n * Checks whether the `tNode` represents an inline template (e.g. `*ngFor`).\n *\n * @param tNode current TNode\n */\nfunction isInlineTemplate(tNode) {\n return tNode.type === 4 /* TNodeType.Container */ && tNode.value !== NG_TEMPLATE_SELECTOR;\n}\n/**\n * Function that checks whether a given tNode matches tag-based selector and has a valid type.\n *\n * Matching can be performed in 2 modes: projection mode (when we project nodes) and regular\n * directive matching mode:\n * - in the \"directive matching\" mode we do _not_ take TContainer's tagName into account if it is\n * different from NG_TEMPLATE_SELECTOR (value different from NG_TEMPLATE_SELECTOR indicates that a\n * tag name was extracted from * syntax so we would match the same directive twice);\n * - in the \"projection\" mode, we use a tag name potentially extracted from the * syntax processing\n * (applicable to TNodeType.Container only).\n */\nfunction hasTagAndTypeMatch(tNode, currentSelector, isProjectionMode) {\n const tagNameToCompare = tNode.type === 4 /* TNodeType.Container */ && !isProjectionMode ? NG_TEMPLATE_SELECTOR : tNode.value;\n return currentSelector === tagNameToCompare;\n}\n/**\n * A utility function to match an Ivy node static data against a simple CSS selector\n *\n * @param node static data of the node to match\n * @param selector The selector to try matching against the node.\n * @param isProjectionMode if `true` we are matching for content projection, otherwise we are doing\n * directive matching.\n * @returns true if node matches the selector.\n */\nfunction isNodeMatchingSelector(tNode, selector, isProjectionMode) {\n ngDevMode && assertDefined(selector[0], 'Selector should have a tag name');\n let mode = 4 /* SelectorFlags.ELEMENT */;\n const nodeAttrs = tNode.attrs || [];\n // Find the index of first attribute that has no value, only a name.\n const nameOnlyMarkerIdx = getNameOnlyMarkerIndex(nodeAttrs);\n // When processing \":not\" selectors, we skip to the next \":not\" if the\n // current one doesn't match\n let skipToNextSelector = false;\n for (let i = 0; i < selector.length; i++) {\n const current = selector[i];\n if (typeof current === 'number') {\n // If we finish processing a :not selector and it hasn't failed, return false\n if (!skipToNextSelector && !isPositive(mode) && !isPositive(current)) {\n return false;\n }\n // If we are skipping to the next :not() and this mode flag is positive,\n // it's a part of the current :not() selector, and we should keep skipping\n if (skipToNextSelector && isPositive(current)) continue;\n skipToNextSelector = false;\n mode = current | mode & 1 /* SelectorFlags.NOT */;\n continue;\n }\n if (skipToNextSelector) continue;\n if (mode & 4 /* SelectorFlags.ELEMENT */) {\n mode = 2 /* SelectorFlags.ATTRIBUTE */ | mode & 1 /* SelectorFlags.NOT */;\n if (current !== '' && !hasTagAndTypeMatch(tNode, current, isProjectionMode) || current === '' && selector.length === 1) {\n if (isPositive(mode)) return false;\n skipToNextSelector = true;\n }\n } else {\n const selectorAttrValue = mode & 8 /* SelectorFlags.CLASS */ ? current : selector[++i];\n // special case for matching against classes when a tNode has been instantiated with\n // class and style values as separate attribute values (e.g. ['title', CLASS, 'foo'])\n if (mode & 8 /* SelectorFlags.CLASS */ && tNode.attrs !== null) {\n if (!isCssClassMatching(tNode.attrs, selectorAttrValue, isProjectionMode)) {\n if (isPositive(mode)) return false;\n skipToNextSelector = true;\n }\n continue;\n }\n const attrName = mode & 8 /* SelectorFlags.CLASS */ ? 'class' : current;\n const attrIndexInNode = findAttrIndexInNode(attrName, nodeAttrs, isInlineTemplate(tNode), isProjectionMode);\n if (attrIndexInNode === -1) {\n if (isPositive(mode)) return false;\n skipToNextSelector = true;\n continue;\n }\n if (selectorAttrValue !== '') {\n let nodeAttrValue;\n if (attrIndexInNode > nameOnlyMarkerIdx) {\n nodeAttrValue = '';\n } else {\n ngDevMode && assertNotEqual(nodeAttrs[attrIndexInNode], 0 /* AttributeMarker.NamespaceURI */, 'We do not match directives on namespaced attributes');\n // we lowercase the attribute value to be able to match\n // selectors without case-sensitivity\n // (selectors are already in lowercase when generated)\n nodeAttrValue = nodeAttrs[attrIndexInNode + 1].toLowerCase();\n }\n const compareAgainstClassName = mode & 8 /* SelectorFlags.CLASS */ ? nodeAttrValue : null;\n if (compareAgainstClassName && classIndexOf(compareAgainstClassName, selectorAttrValue, 0) !== -1 || mode & 2 /* SelectorFlags.ATTRIBUTE */ && selectorAttrValue !== nodeAttrValue) {\n if (isPositive(mode)) return false;\n skipToNextSelector = true;\n }\n }\n }\n }\n return isPositive(mode) || skipToNextSelector;\n}\nfunction isPositive(mode) {\n return (mode & 1 /* SelectorFlags.NOT */) === 0;\n}\n/**\n * Examines the attribute's definition array for a node to find the index of the\n * attribute that matches the given `name`.\n *\n * NOTE: This will not match namespaced attributes.\n *\n * Attribute matching depends upon `isInlineTemplate` and `isProjectionMode`.\n * The following table summarizes which types of attributes we attempt to match:\n *\n * ===========================================================================================================\n * Modes | Normal Attributes | Bindings Attributes | Template Attributes | I18n\n * Attributes\n * ===========================================================================================================\n * Inline + Projection | YES | YES | NO | YES\n * -----------------------------------------------------------------------------------------------------------\n * Inline + Directive | NO | NO | YES | NO\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Projection | YES | YES | NO | YES\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Directive | YES | YES | NO | YES\n * ===========================================================================================================\n *\n * @param name the name of the attribute to find\n * @param attrs the attribute array to examine\n * @param isInlineTemplate true if the node being matched is an inline template (e.g. `*ngFor`)\n * rather than a manually expanded template node (e.g ``).\n * @param isProjectionMode true if we are matching against content projection otherwise we are\n * matching against directives.\n */\nfunction findAttrIndexInNode(name, attrs, isInlineTemplate, isProjectionMode) {\n if (attrs === null) return -1;\n let i = 0;\n if (isProjectionMode || !isInlineTemplate) {\n let bindingsMode = false;\n while (i < attrs.length) {\n const maybeAttrName = attrs[i];\n if (maybeAttrName === name) {\n return i;\n } else if (maybeAttrName === 3 /* AttributeMarker.Bindings */ || maybeAttrName === 6 /* AttributeMarker.I18n */) {\n bindingsMode = true;\n } else if (maybeAttrName === 1 /* AttributeMarker.Classes */ || maybeAttrName === 2 /* AttributeMarker.Styles */) {\n let value = attrs[++i];\n // We should skip classes here because we have a separate mechanism for\n // matching classes in projection mode.\n while (typeof value === 'string') {\n value = attrs[++i];\n }\n continue;\n } else if (maybeAttrName === 4 /* AttributeMarker.Template */) {\n // We do not care about Template attributes in this scenario.\n break;\n } else if (maybeAttrName === 0 /* AttributeMarker.NamespaceURI */) {\n // Skip the whole namespaced attribute and value. This is by design.\n i += 4;\n continue;\n }\n // In binding mode there are only names, rather than name-value pairs.\n i += bindingsMode ? 1 : 2;\n }\n // We did not match the attribute\n return -1;\n } else {\n return matchTemplateAttribute(attrs, name);\n }\n}\nfunction isNodeMatchingSelectorList(tNode, selector, isProjectionMode = false) {\n for (let i = 0; i < selector.length; i++) {\n if (isNodeMatchingSelector(tNode, selector[i], isProjectionMode)) {\n return true;\n }\n }\n return false;\n}\nfunction getProjectAsAttrValue(tNode) {\n const nodeAttrs = tNode.attrs;\n if (nodeAttrs != null) {\n const ngProjectAsAttrIdx = nodeAttrs.indexOf(5 /* AttributeMarker.ProjectAs */);\n // only check for ngProjectAs in attribute names, don't accidentally match attribute's value\n // (attribute names are stored at even indexes)\n if ((ngProjectAsAttrIdx & 1) === 0) {\n return nodeAttrs[ngProjectAsAttrIdx + 1];\n }\n }\n return null;\n}\nfunction getNameOnlyMarkerIndex(nodeAttrs) {\n for (let i = 0; i < nodeAttrs.length; i++) {\n const nodeAttr = nodeAttrs[i];\n if (isNameOnlyAttributeMarker(nodeAttr)) {\n return i;\n }\n }\n return nodeAttrs.length;\n}\nfunction matchTemplateAttribute(attrs, name) {\n let i = attrs.indexOf(4 /* AttributeMarker.Template */);\n if (i > -1) {\n i++;\n while (i < attrs.length) {\n const attr = attrs[i];\n // Return in case we checked all template attrs and are switching to the next section in the\n // attrs array (that starts with a number that represents an attribute marker).\n if (typeof attr === 'number') return -1;\n if (attr === name) return i;\n i++;\n }\n }\n return -1;\n}\n/**\n * Checks whether a selector is inside a CssSelectorList\n * @param selector Selector to be checked.\n * @param list List in which to look for the selector.\n */\nfunction isSelectorInSelectorList(selector, list) {\n selectorListLoop: for (let i = 0; i < list.length; i++) {\n const currentSelectorInList = list[i];\n if (selector.length !== currentSelectorInList.length) {\n continue;\n }\n for (let j = 0; j < selector.length; j++) {\n if (selector[j] !== currentSelectorInList[j]) {\n continue selectorListLoop;\n }\n }\n return true;\n }\n return false;\n}\nfunction maybeWrapInNotSelector(isNegativeMode, chunk) {\n return isNegativeMode ? ':not(' + chunk.trim() + ')' : chunk;\n}\nfunction stringifyCSSSelector(selector) {\n let result = selector[0];\n let i = 1;\n let mode = 2 /* SelectorFlags.ATTRIBUTE */;\n let currentChunk = '';\n let isNegativeMode = false;\n while (i < selector.length) {\n let valueOrMarker = selector[i];\n if (typeof valueOrMarker === 'string') {\n if (mode & 2 /* SelectorFlags.ATTRIBUTE */) {\n const attrValue = selector[++i];\n currentChunk += '[' + valueOrMarker + (attrValue.length > 0 ? '=\"' + attrValue + '\"' : '') + ']';\n } else if (mode & 8 /* SelectorFlags.CLASS */) {\n currentChunk += '.' + valueOrMarker;\n } else if (mode & 4 /* SelectorFlags.ELEMENT */) {\n currentChunk += ' ' + valueOrMarker;\n }\n } else {\n //\n // Append current chunk to the final result in case we come across SelectorFlag, which\n // indicates that the previous section of a selector is over. We need to accumulate content\n // between flags to make sure we wrap the chunk later in :not() selector if needed, e.g.\n // ```\n // ['', Flags.CLASS, '.classA', Flags.CLASS | Flags.NOT, '.classB', '.classC']\n // ```\n // should be transformed to `.classA :not(.classB .classC)`.\n //\n // Note: for negative selector part, we accumulate content between flags until we find the\n // next negative flag. This is needed to support a case where `:not()` rule contains more than\n // one chunk, e.g. the following selector:\n // ```\n // ['', Flags.ELEMENT | Flags.NOT, 'p', Flags.CLASS, 'foo', Flags.CLASS | Flags.NOT, 'bar']\n // ```\n // should be stringified to `:not(p.foo) :not(.bar)`\n //\n if (currentChunk !== '' && !isPositive(valueOrMarker)) {\n result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n currentChunk = '';\n }\n mode = valueOrMarker;\n // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n // mode is maintained for remaining chunks of a selector.\n isNegativeMode = isNegativeMode || !isPositive(mode);\n }\n i++;\n }\n if (currentChunk !== '') {\n result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n }\n return result;\n}\n/**\n * Generates string representation of CSS selector in parsed form.\n *\n * ComponentDef and DirectiveDef are generated with the selector in parsed form to avoid doing\n * additional parsing at runtime (for example, for directive matching). However in some cases (for\n * example, while bootstrapping a component), a string version of the selector is required to query\n * for the host element on the page. This function takes the parsed form of a selector and returns\n * its string representation.\n *\n * @param selectorList selector in parsed form\n * @returns string representation of a given selector\n */\nfunction stringifyCSSSelectorList(selectorList) {\n return selectorList.map(stringifyCSSSelector).join(',');\n}\n/**\n * Extracts attributes and classes information from a given CSS selector.\n *\n * This function is used while creating a component dynamically. In this case, the host element\n * (that is created dynamically) should contain attributes and classes specified in component's CSS\n * selector.\n *\n * @param selector CSS selector in parsed form (in a form of array)\n * @returns object with `attrs` and `classes` fields that contain extracted information\n */\nfunction extractAttrsAndClassesFromSelector(selector) {\n const attrs = [];\n const classes = [];\n let i = 1;\n let mode = 2 /* SelectorFlags.ATTRIBUTE */;\n while (i < selector.length) {\n let valueOrMarker = selector[i];\n if (typeof valueOrMarker === 'string') {\n if (mode === 2 /* SelectorFlags.ATTRIBUTE */) {\n if (valueOrMarker !== '') {\n attrs.push(valueOrMarker, selector[++i]);\n }\n } else if (mode === 8 /* SelectorFlags.CLASS */) {\n classes.push(valueOrMarker);\n }\n } else {\n // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n // mode is maintained for remaining chunks of a selector. Since attributes and classes are\n // extracted only for \"positive\" part of the selector, we can stop here.\n if (!isPositive(mode)) break;\n mode = valueOrMarker;\n }\n i++;\n }\n return {\n attrs,\n classes\n };\n}\n\n/**\n * Create a component definition object.\n *\n *\n * # Example\n * ```\n * class MyComponent {\n * // Generated by Angular Template Compiler\n * // [Symbol] syntax will not be supported by TypeScript until v2.7\n * static ɵcmp = defineComponent({\n * ...\n * });\n * }\n * ```\n * @codeGenApi\n */\nfunction ɵɵdefineComponent(componentDefinition) {\n return noSideEffects(() => {\n // Initialize ngDevMode. This must be the first statement in ɵɵdefineComponent.\n // See the `initNgDevMode` docstring for more information.\n (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode();\n const baseDef = getNgDirectiveDef(componentDefinition);\n const def = {\n ...baseDef,\n decls: componentDefinition.decls,\n vars: componentDefinition.vars,\n template: componentDefinition.template,\n consts: componentDefinition.consts || null,\n ngContentSelectors: componentDefinition.ngContentSelectors,\n onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,\n directiveDefs: null,\n // assigned in noSideEffects\n pipeDefs: null,\n // assigned in noSideEffects\n dependencies: baseDef.standalone && componentDefinition.dependencies || null,\n getStandaloneInjector: null,\n signals: componentDefinition.signals ?? false,\n data: componentDefinition.data || {},\n encapsulation: componentDefinition.encapsulation || ViewEncapsulation$1.Emulated,\n styles: componentDefinition.styles || EMPTY_ARRAY,\n _: null,\n schemas: componentDefinition.schemas || null,\n tView: null,\n id: ''\n };\n initFeatures(def);\n const dependencies = componentDefinition.dependencies;\n def.directiveDefs = extractDefListOrFactory(dependencies, /* pipeDef */false);\n def.pipeDefs = extractDefListOrFactory(dependencies, /* pipeDef */true);\n def.id = getComponentId(def);\n return def;\n });\n}\nfunction extractDirectiveDef(type) {\n return getComponentDef(type) || getDirectiveDef(type);\n}\nfunction nonNull(value) {\n return value !== null;\n}\n/**\n * @codeGenApi\n */\nfunction ɵɵdefineNgModule(def) {\n return noSideEffects(() => {\n const res = {\n type: def.type,\n bootstrap: def.bootstrap || EMPTY_ARRAY,\n declarations: def.declarations || EMPTY_ARRAY,\n imports: def.imports || EMPTY_ARRAY,\n exports: def.exports || EMPTY_ARRAY,\n transitiveCompileScopes: null,\n schemas: def.schemas || null,\n id: def.id || null\n };\n return res;\n });\n}\nfunction parseAndConvertBindingsForDefinition(obj, declaredInputs) {\n if (obj == null) return EMPTY_OBJ;\n const newLookup = {};\n for (const minifiedKey in obj) {\n if (obj.hasOwnProperty(minifiedKey)) {\n const value = obj[minifiedKey];\n let publicName;\n let declaredName;\n let inputFlags = InputFlags.None;\n if (Array.isArray(value)) {\n inputFlags = value[0];\n publicName = value[1];\n declaredName = value[2] ?? publicName; // declared name might not be set to save bytes.\n } else {\n publicName = value;\n declaredName = value;\n }\n // For inputs, capture the declared name, or if some flags are set.\n if (declaredInputs) {\n // Perf note: An array is only allocated for the input if there are flags.\n newLookup[publicName] = inputFlags !== InputFlags.None ? [minifiedKey, inputFlags] : minifiedKey;\n declaredInputs[publicName] = declaredName;\n } else {\n newLookup[publicName] = minifiedKey;\n }\n }\n }\n return newLookup;\n}\n/**\n * Create a directive definition object.\n *\n * # Example\n * ```ts\n * class MyDirective {\n * // Generated by Angular Template Compiler\n * // [Symbol] syntax will not be supported by TypeScript until v2.7\n * static ɵdir = ɵɵdefineDirective({\n * ...\n * });\n * }\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵdefineDirective(directiveDefinition) {\n return noSideEffects(() => {\n const def = getNgDirectiveDef(directiveDefinition);\n initFeatures(def);\n return def;\n });\n}\n/**\n * Create a pipe definition object.\n *\n * # Example\n * ```\n * class MyPipe implements PipeTransform {\n * // Generated by Angular Template Compiler\n * static ɵpipe = definePipe({\n * ...\n * });\n * }\n * ```\n * @param pipeDef Pipe definition generated by the compiler\n *\n * @codeGenApi\n */\nfunction ɵɵdefinePipe(pipeDef) {\n return {\n type: pipeDef.type,\n name: pipeDef.name,\n factory: null,\n pure: pipeDef.pure !== false,\n standalone: pipeDef.standalone === true,\n onDestroy: pipeDef.type.prototype.ngOnDestroy || null\n };\n}\n/**\n * The following getter methods retrieve the definition from the type. Currently the retrieval\n * honors inheritance, but in the future we may change the rule to require that definitions are\n * explicit. This would require some sort of migration strategy.\n */\nfunction getComponentDef(type) {\n return type[NG_COMP_DEF] || null;\n}\nfunction getDirectiveDef(type) {\n return type[NG_DIR_DEF] || null;\n}\nfunction getPipeDef$1(type) {\n return type[NG_PIPE_DEF] || null;\n}\n/**\n * Checks whether a given Component, Directive or Pipe is marked as standalone.\n * This will return false if passed anything other than a Component, Directive, or Pipe class\n * See [this guide](/guide/standalone-components) for additional information:\n *\n * @param type A reference to a Component, Directive or Pipe.\n * @publicApi\n */\nfunction isStandalone(type) {\n const def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef$1(type);\n return def !== null ? def.standalone : false;\n}\nfunction getNgModuleDef(type, throwNotFound) {\n const ngModuleDef = type[NG_MOD_DEF] || null;\n if (!ngModuleDef && throwNotFound === true) {\n throw new Error(`Type ${stringify(type)} does not have 'ɵmod' property.`);\n }\n return ngModuleDef;\n}\nfunction getNgDirectiveDef(directiveDefinition) {\n const declaredInputs = {};\n return {\n type: directiveDefinition.type,\n providersResolver: null,\n factory: null,\n hostBindings: directiveDefinition.hostBindings || null,\n hostVars: directiveDefinition.hostVars || 0,\n hostAttrs: directiveDefinition.hostAttrs || null,\n contentQueries: directiveDefinition.contentQueries || null,\n declaredInputs: declaredInputs,\n inputTransforms: null,\n inputConfig: directiveDefinition.inputs || EMPTY_OBJ,\n exportAs: directiveDefinition.exportAs || null,\n standalone: directiveDefinition.standalone === true,\n signals: directiveDefinition.signals === true,\n selectors: directiveDefinition.selectors || EMPTY_ARRAY,\n viewQuery: directiveDefinition.viewQuery || null,\n features: directiveDefinition.features || null,\n setInput: null,\n findHostDirectiveDefs: null,\n hostDirectives: null,\n inputs: parseAndConvertBindingsForDefinition(directiveDefinition.inputs, declaredInputs),\n outputs: parseAndConvertBindingsForDefinition(directiveDefinition.outputs),\n debugInfo: null\n };\n}\nfunction initFeatures(definition) {\n definition.features?.forEach(fn => fn(definition));\n}\nfunction extractDefListOrFactory(dependencies, pipeDef) {\n if (!dependencies) {\n return null;\n }\n const defExtractor = pipeDef ? getPipeDef$1 : extractDirectiveDef;\n return () => (typeof dependencies === 'function' ? dependencies() : dependencies).map(dep => defExtractor(dep)).filter(nonNull);\n}\n/**\n * A map that contains the generated component IDs and type.\n */\nconst GENERATED_COMP_IDS = /*#__PURE__*/new Map();\n/**\n * A method can returns a component ID from the component definition using a variant of DJB2 hash\n * algorithm.\n */\nfunction getComponentId(componentDef) {\n let hash = 0;\n // We cannot rely solely on the component selector as the same selector can be used in different\n // modules.\n //\n // `componentDef.style` is not used, due to it causing inconsistencies. Ex: when server\n // component styles has no sourcemaps and browsers do.\n //\n // Example:\n // https://github.com/angular/components/blob/d9f82c8f95309e77a6d82fd574c65871e91354c2/src/material/core/option/option.ts#L248\n // https://github.com/angular/components/blob/285f46dc2b4c5b127d356cb7c4714b221f03ce50/src/material/legacy-core/option/option.ts#L32\n const hashSelectors = [componentDef.selectors, componentDef.ngContentSelectors, componentDef.hostVars, componentDef.hostAttrs, componentDef.consts, componentDef.vars, componentDef.decls, componentDef.encapsulation, componentDef.standalone, componentDef.signals, componentDef.exportAs, JSON.stringify(componentDef.inputs), JSON.stringify(componentDef.outputs),\n // We cannot use 'componentDef.type.name' as the name of the symbol will change and will not\n // match in the server and browser bundles.\n Object.getOwnPropertyNames(componentDef.type.prototype), !!componentDef.contentQueries, !!componentDef.viewQuery].join('|');\n for (const char of hashSelectors) {\n hash = Math.imul(31, hash) + char.charCodeAt(0) << 0;\n }\n // Force positive number hash.\n // 2147483647 = equivalent of Integer.MAX_VALUE.\n hash += 2147483647 + 1;\n const compId = 'c' + hash;\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n if (GENERATED_COMP_IDS.has(compId)) {\n const previousCompDefType = GENERATED_COMP_IDS.get(compId);\n if (previousCompDefType !== componentDef.type) {\n console.warn(formatRuntimeError(-912 /* RuntimeErrorCode.COMPONENT_ID_COLLISION */, `Component ID generation collision detected. Components '${previousCompDefType.name}' and '${componentDef.type.name}' with selector '${stringifyCSSSelectorList(componentDef.selectors)}' generated the same component ID. To fix this, you can change the selector of one of those components or add an extra host attribute to force a different ID.`));\n }\n } else {\n GENERATED_COMP_IDS.set(compId, componentDef.type);\n }\n }\n return compId;\n}\n\n// Below are constants for LView indices to help us look up LView members\n// without having to remember the specific indices.\n// Uglify will inline these when minifying so there shouldn't be a cost.\nconst HOST = 0;\nconst TVIEW = 1;\n// Shared with LContainer\nconst FLAGS = 2;\nconst PARENT = 3;\nconst NEXT = 4;\nconst T_HOST = 5;\n// End shared with LContainer\nconst HYDRATION = 6;\nconst CLEANUP = 7;\nconst CONTEXT = 8;\nconst INJECTOR$1 = 9;\nconst ENVIRONMENT = 10;\nconst RENDERER = 11;\nconst CHILD_HEAD = 12;\nconst CHILD_TAIL = 13;\n// FIXME(misko): Investigate if the three declarations aren't all same thing.\nconst DECLARATION_VIEW = 14;\nconst DECLARATION_COMPONENT_VIEW = 15;\nconst DECLARATION_LCONTAINER = 16;\nconst PREORDER_HOOK_FLAGS = 17;\nconst QUERIES = 18;\nconst ID = 19;\nconst EMBEDDED_VIEW_INJECTOR = 20;\nconst ON_DESTROY_HOOKS = 21;\nconst EFFECTS_TO_SCHEDULE = 22;\nconst REACTIVE_TEMPLATE_CONSUMER = 23;\n/**\n * Size of LView's header. Necessary to adjust for it when setting slots.\n *\n * IMPORTANT: `HEADER_OFFSET` should only be referred to the in the `ɵɵ*` instructions to translate\n * instruction index into `LView` index. All other indexes should be in the `LView` index space and\n * there should be no need to refer to `HEADER_OFFSET` anywhere else.\n */\nconst HEADER_OFFSET = 25;\n\n/**\n * Special location which allows easy identification of type. If we have an array which was\n * retrieved from the `LView` and that array has `true` at `TYPE` location, we know it is\n * `LContainer`.\n */\nconst TYPE = 1;\n/**\n * Below are constants for LContainer indices to help us look up LContainer members\n * without having to remember the specific indices.\n * Uglify will inline these when minifying so there shouldn't be a cost.\n */\n// FLAGS, PARENT, NEXT, and T_HOST are indices 2, 3, 4, and 5\n// As we already have these constants in LView, we don't need to re-create them.\nconst DEHYDRATED_VIEWS = 6;\nconst NATIVE = 7;\nconst VIEW_REFS = 8;\nconst MOVED_VIEWS = 9;\n/**\n * Size of LContainer's header. Represents the index after which all views in the\n * container will be inserted. We need to keep a record of current views so we know\n * which views are already in the DOM (and don't need to be re-added) and so we can\n * remove views from the DOM when they are no longer required.\n */\nconst CONTAINER_HEADER_OFFSET = 10;\n/** Flags associated with an LContainer (saved in LContainer[FLAGS]) */\nvar LContainerFlags = /*#__PURE__*/function (LContainerFlags) {\n LContainerFlags[LContainerFlags[\"None\"] = 0] = \"None\";\n /**\n * Flag to signify that this `LContainer` may have transplanted views which need to be change\n * detected. (see: `LView[DECLARATION_COMPONENT_VIEW])`.\n *\n * This flag, once set, is never unset for the `LContainer`.\n */\n LContainerFlags[LContainerFlags[\"HasTransplantedViews\"] = 2] = \"HasTransplantedViews\";\n return LContainerFlags;\n}(LContainerFlags || {});\n/**\n * True if `value` is `LView`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction isLView(value) {\n return Array.isArray(value) && typeof value[TYPE] === 'object';\n}\n/**\n * True if `value` is `LContainer`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction isLContainer(value) {\n return Array.isArray(value) && value[TYPE] === true;\n}\nfunction isContentQueryHost(tNode) {\n return (tNode.flags & 4 /* TNodeFlags.hasContentQuery */) !== 0;\n}\nfunction isComponentHost(tNode) {\n return tNode.componentOffset > -1;\n}\nfunction isDirectiveHost(tNode) {\n return (tNode.flags & 1 /* TNodeFlags.isDirectiveHost */) === 1 /* TNodeFlags.isDirectiveHost */;\n}\nfunction isComponentDef(def) {\n return !!def.template;\n}\nfunction isRootView(target) {\n return (target[FLAGS] & 512 /* LViewFlags.IsRoot */) !== 0;\n}\nfunction isProjectionTNode(tNode) {\n return (tNode.type & 16 /* TNodeType.Projection */) === 16 /* TNodeType.Projection */;\n}\nfunction hasI18n(lView) {\n return (lView[FLAGS] & 32 /* LViewFlags.HasI18n */) === 32 /* LViewFlags.HasI18n */;\n}\nfunction isDestroyed(lView) {\n return (lView[FLAGS] & 256 /* LViewFlags.Destroyed */) === 256 /* LViewFlags.Destroyed */;\n}\n\n// [Assert functions do not constraint type when they are guarded by a truthy\n// expression.](https://github.com/microsoft/TypeScript/issues/37295)\nfunction assertTNodeForLView(tNode, lView) {\n assertTNodeForTView(tNode, lView[TVIEW]);\n}\nfunction assertTNodeForTView(tNode, tView) {\n assertTNode(tNode);\n const tData = tView.data;\n for (let i = HEADER_OFFSET; i < tData.length; i++) {\n if (tData[i] === tNode) {\n return;\n }\n }\n throwError('This TNode does not belong to this TView.');\n}\nfunction assertTNode(tNode) {\n assertDefined(tNode, 'TNode must be defined');\n if (!(tNode && typeof tNode === 'object' && tNode.hasOwnProperty('directiveStylingLast'))) {\n throwError('Not of type TNode, got: ' + tNode);\n }\n}\nfunction assertTIcu(tIcu) {\n assertDefined(tIcu, 'Expected TIcu to be defined');\n if (!(typeof tIcu.currentCaseLViewIndex === 'number')) {\n throwError('Object is not of TIcu type.');\n }\n}\nfunction assertComponentType(actual, msg = 'Type passed in is not ComponentType, it does not have \\'ɵcmp\\' property.') {\n if (!getComponentDef(actual)) {\n throwError(msg);\n }\n}\nfunction assertNgModuleType(actual, msg = 'Type passed in is not NgModuleType, it does not have \\'ɵmod\\' property.') {\n if (!getNgModuleDef(actual)) {\n throwError(msg);\n }\n}\nfunction assertCurrentTNodeIsParent(isParent) {\n assertEqual(isParent, true, 'currentTNode should be a parent');\n}\nfunction assertHasParent(tNode) {\n assertDefined(tNode, 'currentTNode should exist!');\n assertDefined(tNode.parent, 'currentTNode should have a parent');\n}\nfunction assertLContainer(value) {\n assertDefined(value, 'LContainer must be defined');\n assertEqual(isLContainer(value), true, 'Expecting LContainer');\n}\nfunction assertLViewOrUndefined(value) {\n value && assertEqual(isLView(value), true, 'Expecting LView or undefined or null');\n}\nfunction assertLView(value) {\n assertDefined(value, 'LView must be defined');\n assertEqual(isLView(value), true, 'Expecting LView');\n}\nfunction assertFirstCreatePass(tView, errMessage) {\n assertEqual(tView.firstCreatePass, true, errMessage || 'Should only be called in first create pass.');\n}\nfunction assertFirstUpdatePass(tView, errMessage) {\n assertEqual(tView.firstUpdatePass, true, errMessage || 'Should only be called in first update pass.');\n}\n/**\n * This is a basic sanity check that an object is probably a directive def. DirectiveDef is\n * an interface, so we can't do a direct instanceof check.\n */\nfunction assertDirectiveDef(obj) {\n if (obj.type === undefined || obj.selectors == undefined || obj.inputs === undefined) {\n throwError(`Expected a DirectiveDef/ComponentDef and this object does not seem to have the expected shape.`);\n }\n}\nfunction assertIndexInDeclRange(tView, index) {\n assertBetween(HEADER_OFFSET, tView.bindingStartIndex, index);\n}\nfunction assertIndexInExpandoRange(lView, index) {\n const tView = lView[1];\n assertBetween(tView.expandoStartIndex, lView.length, index);\n}\nfunction assertBetween(lower, upper, index) {\n if (!(lower <= index && index < upper)) {\n throwError(`Index out of range (expecting ${lower} <= ${index} < ${upper})`);\n }\n}\nfunction assertProjectionSlots(lView, errMessage) {\n assertDefined(lView[DECLARATION_COMPONENT_VIEW], 'Component views should exist.');\n assertDefined(lView[DECLARATION_COMPONENT_VIEW][T_HOST].projection, errMessage || 'Components with projection nodes () must have projection slots defined.');\n}\nfunction assertParentView(lView, errMessage) {\n assertDefined(lView, errMessage || 'Component views should always have a parent view (component\\'s host view)');\n}\nfunction assertNoDuplicateDirectives(directives) {\n // The array needs at least two elements in order to have duplicates.\n if (directives.length < 2) {\n return;\n }\n const seenDirectives = new Set();\n for (const current of directives) {\n if (seenDirectives.has(current)) {\n throw new RuntimeError(309 /* RuntimeErrorCode.DUPLICATE_DIRECTIVE */, `Directive ${current.type.name} matches multiple times on the same element. ` + `Directives can only match an element once.`);\n }\n seenDirectives.add(current);\n }\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 */\nfunction assertNodeInjector(lView, injectorIndex) {\n assertIndexInExpandoRange(lView, injectorIndex);\n assertIndexInExpandoRange(lView, injectorIndex + 8 /* NodeInjectorOffset.PARENT */);\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 /* NodeInjectorOffset.PARENT */], 'injectorIndex should point to parent injector');\n}\nconst SVG_NAMESPACE = 'svg';\nconst MATH_ML_NAMESPACE = 'math';\n\n// TODO(atscott): flip default internally ASAP and externally for v18 (#52928)\nlet _ensureDirtyViewsAreAlwaysReachable = false;\nfunction getEnsureDirtyViewsAreAlwaysReachable() {\n return _ensureDirtyViewsAreAlwaysReachable;\n}\nfunction setEnsureDirtyViewsAreAlwaysReachable(v) {\n _ensureDirtyViewsAreAlwaysReachable = v;\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 * Returns `RNode`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction unwrapRNode(value) {\n while (Array.isArray(value)) {\n value = value[HOST];\n }\n return value;\n}\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\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 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 */\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 */\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 */\nfunction getNativeByTNodeOrNull(tNode, lView) {\n const index = tNode === null ? -1 : tNode.index;\n if (index !== -1) {\n ngDevMode && assertTNodeForLView(tNode, lView);\n const node = unwrapRNode(lView[index]);\n return node;\n }\n return null;\n}\n// fixme(misko): The return Type should be `TNode|null`\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`. */\nfunction load(view, index) {\n ngDevMode && assertIndexInRange(view, index);\n return view[index];\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 */\nfunction isCreationMode(view) {\n return (view[FLAGS] & 4 /* LViewFlags.CreationMode */) === 4 /* LViewFlags.CreationMode */;\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 */\nfunction viewAttachedToChangeDetector(view) {\n return (view[FLAGS] & 128 /* LViewFlags.Attached */) === 128 /* LViewFlags.Attached */;\n}\n/** Returns a boolean for whether the view is attached to a container. */\nfunction viewAttachedToContainer(view) {\n return isLContainer(view[PARENT]);\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 */\nfunction resetPreOrderHookFlags(lView) {\n lView[PREORDER_HOOK_FLAGS] = 0;\n}\n/**\n * Adds the `RefreshView` flag from the lView and updates HAS_CHILD_VIEWS_TO_REFRESH flag of\n * parents.\n */\nfunction markViewForRefresh(lView) {\n if (lView[FLAGS] & 1024 /* LViewFlags.RefreshView */) {\n return;\n }\n lView[FLAGS] |= 1024 /* LViewFlags.RefreshView */;\n if (viewAttachedToChangeDetector(lView)) {\n markAncestorsForTraversal(lView);\n }\n}\n/**\n * Walks up the LView hierarchy.\n * @param nestingLevel Number of times to walk up in hierarchy.\n * @param currentView View from which to start the lookup.\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 return currentView;\n}\nfunction requiresRefreshOrTraversal(lView) {\n return !!(lView[FLAGS] & (1024 /* LViewFlags.RefreshView */ | 8192 /* LViewFlags.HasChildViewsToRefresh */) || lView[REACTIVE_TEMPLATE_CONSUMER]?.dirty);\n}\n/**\n * Updates the `HasChildViewsToRefresh` flag on the parents of the `LView` as well as the\n * parents above.\n */\nfunction updateAncestorTraversalFlagsOnAttach(lView) {\n // TODO(atscott): Simplify if...else cases once getEnsureDirtyViewsAreAlwaysReachable is always\n // `true`. When we attach a view that's marked `Dirty`, we should ensure that it is reached during\n // the next CD traversal so we add the `RefreshView` flag and mark ancestors accordingly.\n if (requiresRefreshOrTraversal(lView)) {\n markAncestorsForTraversal(lView);\n } else if (lView[FLAGS] & 64 /* LViewFlags.Dirty */) {\n if (getEnsureDirtyViewsAreAlwaysReachable()) {\n lView[FLAGS] |= 1024 /* LViewFlags.RefreshView */;\n markAncestorsForTraversal(lView);\n } else {\n lView[ENVIRONMENT].changeDetectionScheduler?.notify();\n }\n }\n}\n/**\n * Ensures views above the given `lView` are traversed during change detection even when they are\n * not dirty.\n *\n * This is done by setting the `HAS_CHILD_VIEWS_TO_REFRESH` flag up to the root, stopping when the\n * flag is already `true` or the `lView` is detached.\n */\nfunction markAncestorsForTraversal(lView) {\n lView[ENVIRONMENT].changeDetectionScheduler?.notify();\n let parent = getLViewParent(lView);\n while (parent !== null) {\n // We stop adding markers to the ancestors once we reach one that already has the marker. This\n // is to avoid needlessly traversing all the way to the root when the marker already exists.\n if (parent[FLAGS] & 8192 /* LViewFlags.HasChildViewsToRefresh */) {\n break;\n }\n parent[FLAGS] |= 8192 /* LViewFlags.HasChildViewsToRefresh */;\n if (!viewAttachedToChangeDetector(parent)) {\n break;\n }\n parent = getLViewParent(parent);\n }\n}\n/**\n * Stores a LView-specific destroy callback.\n */\nfunction storeLViewOnDestroy(lView, onDestroyCallback) {\n if ((lView[FLAGS] & 256 /* LViewFlags.Destroyed */) === 256 /* LViewFlags.Destroyed */) {\n throw new RuntimeError(911 /* RuntimeErrorCode.VIEW_ALREADY_DESTROYED */, ngDevMode && 'View has already been destroyed.');\n }\n if (lView[ON_DESTROY_HOOKS] === null) {\n lView[ON_DESTROY_HOOKS] = [];\n }\n lView[ON_DESTROY_HOOKS].push(onDestroyCallback);\n}\n/**\n * Removes previously registered LView-specific destroy callback.\n */\nfunction removeLViewOnDestroy(lView, onDestroyCallback) {\n if (lView[ON_DESTROY_HOOKS] === null) return;\n const destroyCBIdx = lView[ON_DESTROY_HOOKS].indexOf(onDestroyCallback);\n if (destroyCBIdx !== -1) {\n lView[ON_DESTROY_HOOKS].splice(destroyCBIdx, 1);\n }\n}\n/**\n * Gets the parent LView of the passed LView, if the PARENT is an LContainer, will get the parent of\n * that LContainer, which is an LView\n * @param lView the lView whose parent to get\n */\nfunction getLViewParent(lView) {\n ngDevMode && assertLView(lView);\n const parent = lView[PARENT];\n return isLContainer(parent) ? parent[PARENT] : parent;\n}\nconst instructionState = {\n lFrame: /*#__PURE__*/createLFrame(null),\n bindingsEnabled: true,\n skipHydrationRootTNode: null\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 */\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 */\nfunction specOnlyIsInstructionStateEmpty() {\n return instructionState.lFrame.parent === null;\n}\nfunction getElementDepthCount() {\n return instructionState.lFrame.elementDepthCount;\n}\nfunction increaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount++;\n}\nfunction decreaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount--;\n}\nfunction getBindingsEnabled() {\n return instructionState.bindingsEnabled;\n}\n/**\n * Returns true if currently inside a skip hydration block.\n * @returns boolean\n */\nfunction isInSkipHydrationBlock$1() {\n return instructionState.skipHydrationRootTNode !== null;\n}\n/**\n * Returns true if this is the root TNode of the skip hydration block.\n * @param tNode the current TNode\n * @returns boolean\n */\nfunction isSkipHydrationRootTNode(tNode) {\n return instructionState.skipHydrationRootTNode === tNode;\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 */\nfunction ɵɵenableBindings() {\n instructionState.bindingsEnabled = true;\n}\n/**\n * Sets a flag to specify that the TNode is in a skip hydration block.\n * @param tNode the current TNode\n */\nfunction enterSkipHydrationBlock(tNode) {\n instructionState.skipHydrationRootTNode = tNode;\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 */\nfunction ɵɵdisableBindings() {\n instructionState.bindingsEnabled = false;\n}\n/**\n * Clears the root skip hydration node when leaving a skip hydration block.\n */\nfunction leaveSkipHydrationBlock() {\n instructionState.skipHydrationRootTNode = null;\n}\n/**\n * Return the current `LView`.\n */\nfunction getLView() {\n return instructionState.lFrame.lView;\n}\n/**\n * Return the current `TView`.\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 */\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 */\nfunction ɵɵresetView(value) {\n instructionState.lFrame.contextLView = null;\n return value;\n}\nfunction getCurrentTNode() {\n let currentTNode = getCurrentTNodePlaceholderOk();\n while (currentTNode !== null && currentTNode.type === 64 /* TNodeType.Placeholder */) {\n currentTNode = currentTNode.parent;\n }\n return currentTNode;\n}\nfunction getCurrentTNodePlaceholderOk() {\n return instructionState.lFrame.currentTNode;\n}\nfunction getCurrentParentTNode() {\n const lFrame = instructionState.lFrame;\n const currentTNode = lFrame.currentTNode;\n return lFrame.isParent ? currentTNode : currentTNode.parent;\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}\nfunction isCurrentTNodeParent() {\n return instructionState.lFrame.isParent;\n}\nfunction setCurrentTNodeAsNotParent() {\n instructionState.lFrame.isParent = false;\n}\nfunction getContextLView() {\n const contextLView = instructionState.lFrame.contextLView;\n ngDevMode && assertDefined(contextLView, 'contextLView must be defined.');\n return contextLView;\n}\nfunction isInCheckNoChangesMode() {\n !ngDevMode && throwError('Must never be called in production mode');\n return _isInCheckNoChangesMode;\n}\nfunction setIsInCheckNoChangesMode(mode) {\n !ngDevMode && throwError('Must never be called in production mode');\n _isInCheckNoChangesMode = mode;\n}\n// top level variables should not be exported for performance reasons (PERF_NOTES.md)\nfunction getBindingRoot() {\n const lFrame = instructionState.lFrame;\n let index = lFrame.bindingRootIndex;\n if (index === -1) {\n index = lFrame.bindingRootIndex = lFrame.tView.bindingStartIndex;\n }\n return index;\n}\nfunction getBindingIndex() {\n return instructionState.lFrame.bindingIndex;\n}\nfunction setBindingIndex(value) {\n return instructionState.lFrame.bindingIndex = value;\n}\nfunction nextBindingIndex() {\n return instructionState.lFrame.bindingIndex++;\n}\nfunction incrementBindingIndex(count) {\n const lFrame = instructionState.lFrame;\n const index = lFrame.bindingIndex;\n lFrame.bindingIndex = lFrame.bindingIndex + count;\n return index;\n}\nfunction isInI18nBlock() {\n return instructionState.lFrame.inI18n;\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 */\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 */\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 */\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 */\nfunction getCurrentDirectiveDef(tData) {\n const currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex];\n}\nfunction getCurrentQueryIndex() {\n return instructionState.lFrame.currentQueryIndex;\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 */\nfunction getDeclarationTNode(lView) {\n const tView = lView[TVIEW];\n // Return the declaration parent for embedded views\n if (tView.type === 2 /* TViewType.Embedded */) {\n ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n return tView.declTNode;\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 // Falling back to `T_HOST` in case we cross component boundary.\n if (tView.type === 1 /* TViewType.Component */) {\n return lView[T_HOST];\n }\n // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\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 */\nfunction enterDI(lView, tNode, flags) {\n ngDevMode && assertLViewOrUndefined(lView);\n if (flags & InjectFlags.SkipSelf) {\n ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n let parentTNode = tNode;\n let parentLView = lView;\n while (true) {\n ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n parentTNode = parentTNode.parent;\n if (parentTNode === null && !(flags & InjectFlags.Host)) {\n parentTNode = getDeclarationTNode(parentLView);\n if (parentTNode === null) break;\n // 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 ngDevMode && assertDefined(parentLView, 'Parent LView should be defined');\n parentLView = parentLView[DECLARATION_VIEW];\n // 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 if (parentTNode.type & (2 /* TNodeType.Element */ | 8 /* TNodeType.ElementContainer */)) {\n break;\n }\n } else {\n break;\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 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 */\nfunction enterView(newView) {\n ngDevMode && assertNotEqual(newView[0], newView[1], '????');\n ngDevMode && assertLViewOrUndefined(newView);\n const newLFrame = allocLFrame();\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 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 */\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}\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 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 */\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 */\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 */\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}\nfunction nextContextImpl(level) {\n const contextLView = instructionState.lFrame.contextLView = walkUpViews(level, instructionState.lFrame.contextLView);\n return contextLView[CONTEXT];\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 */\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 */\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 */\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 */\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 */\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 */\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 */\nfunction namespaceHTMLInternal() {\n instructionState.lFrame.currentNamespace = null;\n}\nfunction getNamespace$1() {\n return instructionState.lFrame.currentNamespace;\n}\nlet _wasLastNodeCreated = true;\n/**\n * Retrieves a global flag that indicates whether the most recent DOM node\n * was created or hydrated.\n */\nfunction wasLastNodeCreated() {\n return _wasLastNodeCreated;\n}\n/**\n * Sets a global flag to indicate whether the most recent DOM node\n * was created or hydrated.\n */\nfunction lastNodeWasCreated(flag) {\n _wasLastNodeCreated = flag;\n}\n\n/**\n * Creates an ElementRef from the most recent node.\n *\n * @returns The ElementRef instance to use\n */\nfunction injectElementRef() {\n return createElementRef(getCurrentTNode(), getLView());\n}\n/**\n * Creates an ElementRef given a node.\n *\n * @param tNode The node for which you'd like an ElementRef\n * @param lView The view to which the node belongs\n * @returns The ElementRef instance to use\n */\nfunction createElementRef(tNode, lView) {\n return new ElementRef(getNativeByTNode(tNode, lView));\n}\n/**\n * A wrapper around a native element inside of a View.\n *\n * An `ElementRef` is backed by a render-specific element. In the browser, this is usually a DOM\n * element.\n *\n * @security Permitting direct access to the DOM can make your application more vulnerable to\n * XSS attacks. Carefully review any use of `ElementRef` in your code. For more detail, see the\n * [Security Guide](https://g.co/ng/security).\n *\n * @publicApi\n */\n// Note: We don't expose things like `Injector`, `ViewContainer`, ... here,\n// i.e. users have to ask for what they need. With that, we can build better analysis tools\n// and could do better codegen in the future.\nlet ElementRef = /*#__PURE__*/(() => {\n class ElementRef {\n constructor(nativeElement) {\n this.nativeElement = nativeElement;\n }\n /**\n * @internal\n * @nocollapse\n */\n static {\n this.__NG_ELEMENT_ID__ = injectElementRef;\n }\n }\n return ElementRef;\n})();\n/**\n * Unwraps `ElementRef` and return the `nativeElement`.\n *\n * @param value value to unwrap\n * @returns `nativeElement` if `ElementRef` otherwise returns value as is.\n */\nfunction unwrapElementRef(value) {\n return value instanceof ElementRef ? value.nativeElement : value;\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 */\nfunction arrayEquals(a, b, identityAccessor) {\n if (a.length !== b.length) return false;\n for (let i = 0; i < a.length; i++) {\n let valueA = a[i];\n let valueB = b[i];\n if (identityAccessor) {\n valueA = identityAccessor(valueA);\n valueB = identityAccessor(valueB);\n }\n if (valueB !== valueA) {\n return false;\n }\n }\n return true;\n}\n/**\n * Flattens an array.\n */\nfunction flatten(list) {\n return list.flat(Number.POSITIVE_INFINITY);\n}\nfunction deepForEach(input, fn) {\n input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));\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}\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}\nfunction newArray(size, value) {\n const list = [];\n for (let i = 0; i < size; i++) {\n list.push(value);\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 */\nfunction arraySplice(array, index, count) {\n const length = array.length - count;\n while (index < length) {\n array[index] = array[index + count];\n index++;\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 */\nfunction arrayInsert(array, index, value) {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\n while (end > index) {\n const previousEnd = end - 1;\n array[end] = array[previousEnd];\n end = previousEnd;\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 */\nfunction arrayInsert2(array, index, value1, value2) {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\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 while (end > index) {\n const previousEnd = end - 2;\n array[end] = array[previousEnd];\n end--;\n }\n array[index] = value1;\n array[index + 1] = value2;\n }\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 */\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 */\nfunction keyValueArraySet(keyValueArray, key, value) {\n let index = keyValueArrayIndexOf(keyValueArray, key);\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 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 */\nfunction keyValueArrayGet(keyValueArray, key) {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it retrieve it.\n return keyValueArray[index | 1];\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 */\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 */\nfunction keyValueArrayDelete(keyValueArray, key) {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it remove it.\n arraySplice(keyValueArray, index, 2);\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 */\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 while (end !== start) {\n const middle = start + (end - start >> 1); // find the middle.\n const current = array[middle << shift];\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 return ~(end << shift);\n}\nfunction symbolIterator() {\n // @ts-expect-error accessing a private member\n return this._results[Symbol.iterator]();\n}\n/**\n * An unmodifiable list of items that Angular keeps up to date when the state\n * of the application changes.\n *\n * The type of object that {@link ViewChildren}, {@link ContentChildren}, and {@link QueryList}\n * provide.\n *\n * Implements an iterable interface, therefore it can be used in both ES6\n * javascript `for (var i of items)` loops as well as in Angular templates with\n * `*ngFor=\"let i of myList\"`.\n *\n * Changes can be observed by subscribing to the changes `Observable`.\n *\n * NOTE: In the future this class will implement an `Observable` interface.\n *\n * @usageNotes\n * ### Example\n * ```typescript\n * @Component({...})\n * class Container {\n * @ViewChildren(Item) items:QueryList;\n * }\n * ```\n *\n * @publicApi\n */\nclass QueryList {\n static {\n Symbol.iterator;\n }\n /**\n * Returns `Observable` of `QueryList` notifying the subscriber of changes.\n */\n get changes() {\n return this._changes ??= new EventEmitter();\n }\n /**\n * @param emitDistinctChangesOnly Whether `QueryList.changes` should fire only when actual change\n * has occurred. Or if it should fire when query is recomputed. (recomputing could resolve in\n * the same result)\n */\n constructor(_emitDistinctChangesOnly = false) {\n this._emitDistinctChangesOnly = _emitDistinctChangesOnly;\n this.dirty = true;\n this._onDirty = undefined;\n this._results = [];\n this._changesDetected = false;\n this._changes = undefined;\n this.length = 0;\n this.first = undefined;\n this.last = undefined;\n // This function should be declared on the prototype, but doing so there will cause the class\n // declaration to have side-effects and become not tree-shakable. For this reason we do it in\n // the constructor.\n // [Symbol.iterator](): Iterator { ... }\n const proto = QueryList.prototype;\n if (!proto[Symbol.iterator]) proto[Symbol.iterator] = symbolIterator;\n }\n /**\n * Returns the QueryList entry at `index`.\n */\n get(index) {\n return this._results[index];\n }\n /**\n * See\n * [Array.map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n */\n map(fn) {\n return this._results.map(fn);\n }\n filter(fn) {\n return this._results.filter(fn);\n }\n /**\n * See\n * [Array.find](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find)\n */\n find(fn) {\n return this._results.find(fn);\n }\n /**\n * See\n * [Array.reduce](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n */\n reduce(fn, init) {\n return this._results.reduce(fn, init);\n }\n /**\n * See\n * [Array.forEach](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)\n */\n forEach(fn) {\n this._results.forEach(fn);\n }\n /**\n * See\n * [Array.some](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some)\n */\n some(fn) {\n return this._results.some(fn);\n }\n /**\n * Returns a copy of the internal results list as an Array.\n */\n toArray() {\n return this._results.slice();\n }\n toString() {\n return this._results.toString();\n }\n /**\n * Updates the stored data of the query list, and resets the `dirty` flag to `false`, so that\n * on change detection, it will not notify of changes to the queries, unless a new change\n * occurs.\n *\n * @param resultsTree The query results to store\n * @param identityAccessor Optional function for extracting stable object identity from a value\n * in the array. This function is executed for each element of the query result list while\n * comparing current query list with the new one (provided as a first argument of the `reset`\n * function) to detect if the lists are different. If the function is not provided, elements\n * are compared as is (without any pre-processing).\n */\n reset(resultsTree, identityAccessor) {\n this.dirty = false;\n const newResultFlat = flatten(resultsTree);\n if (this._changesDetected = !arrayEquals(this._results, newResultFlat, identityAccessor)) {\n this._results = newResultFlat;\n this.length = newResultFlat.length;\n this.last = newResultFlat[this.length - 1];\n this.first = newResultFlat[0];\n }\n }\n /**\n * Triggers a change event by emitting on the `changes` {@link EventEmitter}.\n */\n notifyOnChanges() {\n if (this._changes !== undefined && (this._changesDetected || !this._emitDistinctChangesOnly)) this._changes.emit(this);\n }\n /** @internal */\n onDirty(cb) {\n this._onDirty = cb;\n }\n /** internal */\n setDirty() {\n this.dirty = true;\n this._onDirty?.();\n }\n /** internal */\n destroy() {\n if (this._changes !== undefined) {\n this._changes.complete();\n this._changes.unsubscribe();\n }\n }\n}\n\n/**\n * The name of an attribute that can be added to the hydration boundary node\n * (component host node) to disable hydration for the content within that boundary.\n */\nconst SKIP_HYDRATION_ATTR_NAME = 'ngSkipHydration';\n/** Lowercase name of the `ngSkipHydration` attribute used for case-insensitive comparisons. */\nconst SKIP_HYDRATION_ATTR_NAME_LOWER_CASE = 'ngskiphydration';\n/**\n * Helper function to check if a given TNode has the 'ngSkipHydration' attribute.\n */\nfunction hasSkipHydrationAttrOnTNode(tNode) {\n const attrs = tNode.mergedAttrs;\n if (attrs === null) return false;\n // only ever look at the attribute name and skip the values\n for (let i = 0; i < attrs.length; i += 2) {\n const value = attrs[i];\n // This is a marker, which means that the static attributes section is over,\n // so we can exit early.\n if (typeof value === 'number') return false;\n if (typeof value === 'string' && value.toLowerCase() === SKIP_HYDRATION_ATTR_NAME_LOWER_CASE) {\n return true;\n }\n }\n return false;\n}\n/**\n * Helper function to check if a given RElement has the 'ngSkipHydration' attribute.\n */\nfunction hasSkipHydrationAttrOnRElement(rNode) {\n return rNode.hasAttribute(SKIP_HYDRATION_ATTR_NAME);\n}\n/**\n * Checks whether a TNode has a flag to indicate that it's a part of\n * a skip hydration block.\n */\nfunction hasInSkipHydrationBlockFlag(tNode) {\n return (tNode.flags & 128 /* TNodeFlags.inSkipHydrationBlock */) === 128 /* TNodeFlags.inSkipHydrationBlock */;\n}\n/**\n * Helper function that determines if a given node is within a skip hydration block\n * by navigating up the TNode tree to see if any parent nodes have skip hydration\n * attribute.\n */\nfunction isInSkipHydrationBlock(tNode) {\n if (hasInSkipHydrationBlockFlag(tNode)) {\n return true;\n }\n let currentTNode = tNode.parent;\n while (currentTNode) {\n if (hasInSkipHydrationBlockFlag(tNode) || hasSkipHydrationAttrOnTNode(currentTNode)) {\n return true;\n }\n currentTNode = currentTNode.parent;\n }\n return false;\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` and `Server`)\n * by calling `setDocument()` when providing the `DOCUMENT` token.\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 */\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 */\nfunction getDocument() {\n if (DOCUMENT !== undefined) {\n return DOCUMENT;\n } else if (typeof document !== 'undefined') {\n return document;\n }\n throw new RuntimeError(210 /* RuntimeErrorCode.MISSING_DOCUMENT */, (typeof ngDevMode === 'undefined' || ngDevMode) && `The document object is not available in this context. Make sure the DOCUMENT injection token is provided.`);\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.\n}\n\n/**\n * Construct an injectable definition which defines how a token will be constructed by the DI\n * system, and in which injectors (if any) it will be available.\n *\n * This should be assigned to a static `ɵprov` field on a type, which will then be an\n * `InjectableType`.\n *\n * Options:\n * * `providedIn` determines which injectors will include the injectable, by either associating it\n * with an `@NgModule` or other `InjectorType`, or by specifying that this injectable should be\n * provided in the `'root'` injector, which will be the application-level injector in most apps.\n * * `factory` gives the zero argument function which will create an instance of the injectable.\n * The factory can call [`inject`](api/core/inject) to access the `Injector` and request injection\n * of dependencies.\n *\n * @codeGenApi\n * @publicApi This instruction has been emitted by ViewEngine for some time and is deployed to npm.\n */\nfunction ɵɵdefineInjectable(opts) {\n return {\n token: opts.token,\n providedIn: opts.providedIn || null,\n factory: opts.factory,\n value: undefined\n };\n}\n/**\n * @deprecated in v8, delete after v10. This API should be used only by generated code, and that\n * code should now use ɵɵdefineInjectable instead.\n * @publicApi\n */\nconst defineInjectable = ɵɵdefineInjectable;\n/**\n * Construct an `InjectorDef` which configures an injector.\n *\n * This should be assigned to a static injector def (`ɵinj`) field on a type, which will then be an\n * `InjectorType`.\n *\n * Options:\n *\n * * `providers`: an optional array of providers to add to the injector. Each provider must\n * either have a factory or point to a type which has a `ɵprov` static property (the\n * type must be an `InjectableType`).\n * * `imports`: an optional array of imports of other `InjectorType`s or `InjectorTypeWithModule`s\n * whose providers will also be added to the injector. Locally provided types will override\n * providers from imports.\n *\n * @codeGenApi\n */\nfunction ɵɵdefineInjector(options) {\n return {\n providers: options.providers || [],\n imports: options.imports || []\n };\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` in a way which is immune to accidentally reading\n * inherited value.\n *\n * @param type A type which may have its own (non-inherited) `ɵprov`.\n */\nfunction getInjectableDef(type) {\n return getOwnDefinition(type, NG_PROV_DEF) || getOwnDefinition(type, NG_INJECTABLE_DEF);\n}\nfunction isInjectable(type) {\n return getInjectableDef(type) !== null;\n}\n/**\n * Return definition only if it is defined directly on `type` and is not inherited from a base\n * class of `type`.\n */\nfunction getOwnDefinition(type, field) {\n return type.hasOwnProperty(field) ? type[field] : null;\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` or read the `ɵprov` from one of its ancestors.\n *\n * @param type A type which may have `ɵprov`, via inheritance.\n *\n * @deprecated Will be removed in a future version of Angular, where an error will occur in the\n * scenario if we find the `ɵprov` on an ancestor only.\n */\nfunction getInheritedInjectableDef(type) {\n const def = type && (type[NG_PROV_DEF] || type[NG_INJECTABLE_DEF]);\n if (def) {\n ngDevMode && console.warn(`DEPRECATED: DI is instantiating a token \"${type.name}\" that inherits its @Injectable decorator but does not provide one itself.\\n` + `This will become an error in a future version of Angular. Please add @Injectable() to the \"${type.name}\" class.`);\n return def;\n } else {\n return null;\n }\n}\n/**\n * Read the injector def type in a way which is immune to accidentally reading inherited value.\n *\n * @param type type which may have an injector def (`ɵinj`)\n */\nfunction getInjectorDef(type) {\n return type && (type.hasOwnProperty(NG_INJ_DEF) || type.hasOwnProperty(NG_INJECTOR_DEF)) ? type[NG_INJ_DEF] : null;\n}\nconst NG_PROV_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵprov: getClosureSafeProperty\n});\nconst NG_INJ_DEF = /*#__PURE__*/getClosureSafeProperty({\n ɵinj: getClosureSafeProperty\n});\n// We need to keep these around so we can read off old defs if new defs are unavailable\nconst NG_INJECTABLE_DEF = /*#__PURE__*/getClosureSafeProperty({\n ngInjectableDef: getClosureSafeProperty\n});\nconst NG_INJECTOR_DEF = /*#__PURE__*/getClosureSafeProperty({\n ngInjectorDef: getClosureSafeProperty\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 *\n * **Important Note**: Ensure that you use the same instance of the `InjectionToken` in both the\n * provider and the injection call. Creating a new instance of `InjectionToken` in different places,\n * even with the same description, will be treated as different tokens by Angular's DI system,\n * leading to a `NullInjectorError`.\n *\n *
\n *\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`](api/core/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` (note:\n * this option is now deprecated). As mentioned above, `'root'` is the default value for\n * `providedIn`.\n *\n * The `providedIn: NgModule` and `providedIn: 'any'` options are deprecated.\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 * @publicApi\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 this.ngMetadataName = 'InjectionToken';\n this.ɵprov = undefined;\n if (typeof options == 'number') {\n (typeof ngDevMode === 'undefined' || ngDevMode) && assertLessThan(options, 0, 'Only negative numbers are supported here');\n // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.\n // See `InjectorMarkers`\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 get multi() {\n return this;\n }\n toString() {\n return `InjectionToken ${this._desc}`;\n }\n}\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") representing a string ID, used\n * primarily for prefixing application attributes and CSS styles when\n * {@link ViewEncapsulation#Emulated} is being used.\n *\n * The token is needed in cases when multiple applications are bootstrapped on a page\n * (for example, using `bootstrapApplication` calls). In this case, ensure that those applications\n * have different `APP_ID` value setup. For example:\n *\n * ```\n * bootstrapApplication(ComponentA, {\n * providers: [\n * { provide: APP_ID, useValue: 'app-a' },\n * // ... other providers ...\n * ]\n * });\n *\n * bootstrapApplication(ComponentB, {\n * providers: [\n * { provide: APP_ID, useValue: 'app-b' },\n * // ... other providers ...\n * ]\n * });\n * ```\n *\n * By default, when there is only one application bootstrapped, you don't need to provide the\n * `APP_ID` token (the `ng` will be used as an app ID).\n *\n * @publicApi\n */\nconst APP_ID = /*#__PURE__*/new InjectionToken(ngDevMode ? 'AppId' : '', {\n providedIn: 'root',\n factory: () => DEFAULT_APP_ID\n});\n/** Default value of the `APP_ID` token. */\nconst DEFAULT_APP_ID = 'ng';\n/**\n * A function that is executed when a platform is initialized.\n * @publicApi\n */\nconst PLATFORM_INITIALIZER = /*#__PURE__*/new InjectionToken(ngDevMode ? 'Platform Initializer' : '');\n/**\n * A token that indicates an opaque platform ID.\n * @publicApi\n */\nconst PLATFORM_ID = /*#__PURE__*/new InjectionToken(ngDevMode ? 'Platform ID' : '', {\n providedIn: 'platform',\n factory: () => 'unknown' // set a default platform name, when none set explicitly\n});\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that indicates the root directory of\n * the application\n * @publicApi\n * @deprecated\n */\nconst PACKAGE_ROOT_URL = /*#__PURE__*/new InjectionToken(ngDevMode ? 'Application Packages Root URL' : '');\n// We keep this token here, rather than the animations package, so that modules that only care\n// about which animations module is loaded (e.g. the CDK) can retrieve it without having to\n// include extra dependencies. See #44970 for more context.\n/**\n * A [DI token](api/core/InjectionToken) that indicates which animations\n * module has been loaded.\n * @publicApi\n */\nconst ANIMATION_MODULE_TYPE = /*#__PURE__*/new InjectionToken(ngDevMode ? 'AnimationModuleType' : '');\n// TODO(crisbeto): link to CSP guide here.\n/**\n * Token used to configure the [Content Security Policy](https://web.dev/strict-csp/) nonce that\n * Angular will apply when inserting inline styles. If not provided, Angular will look up its value\n * from the `ngCspNonce` attribute of the application root node.\n *\n * @publicApi\n */\nconst CSP_NONCE = /*#__PURE__*/new InjectionToken(ngDevMode ? 'CSP nonce' : '', {\n providedIn: 'root',\n factory: () => {\n // Ideally we wouldn't have to use `querySelector` here since we know that the nonce will be on\n // the root node, but because the token value is used in renderers, it has to be available\n // *very* early in the bootstrapping process. This should be a fairly shallow search, because\n // the app won't have been added to the DOM yet. Some approaches that were considered:\n // 1. Find the root node through `ApplicationRef.components[i].location` - normally this would\n // be enough for our purposes, but the token is injected very early so the `components` array\n // isn't populated yet.\n // 2. Find the root `LView` through the current `LView` - renderers are a prerequisite to\n // creating the `LView`. This means that no `LView` will have been entered when this factory is\n // invoked for the root component.\n // 3. Have the token factory return `() => string` which is invoked when a nonce is requested -\n // the slightly later execution does allow us to get an `LView` reference, but the fact that\n // it is a function means that it could be executed at *any* time (including immediately) which\n // may lead to weird bugs.\n // 4. Have the `ComponentFactory` read the attribute and provide it to the injector under the\n // hood - has the same problem as #1 and #2 in that the renderer is used to query for the root\n // node and the nonce value needs to be available when the renderer is created.\n return getDocument().body?.querySelector('[ngCspNonce]')?.getAttribute('ngCspNonce') || null;\n }\n});\nconst IMAGE_CONFIG_DEFAULTS = {\n breakpoints: [16, 32, 48, 64, 96, 128, 256, 384, 640, 750, 828, 1080, 1200, 1920, 2048, 3840],\n placeholderResolution: 30,\n disableImageSizeWarning: false,\n disableImageLazyLoadWarning: false\n};\n/**\n * Injection token that configures the image optimized image functionality.\n * See {@link ImageConfig} for additional information about parameters that\n * can be used.\n *\n * @see {@link NgOptimizedImage}\n * @see {@link ImageConfig}\n * @publicApi\n */\nconst IMAGE_CONFIG = /*#__PURE__*/new InjectionToken(ngDevMode ? 'ImageConfig' : '', {\n providedIn: 'root',\n factory: () => IMAGE_CONFIG_DEFAULTS\n});\nconst __forward_ref__ = /*#__PURE__*/getClosureSafeProperty({\n __forward_ref__: getClosureSafeProperty\n});\n/**\n * Allows to refer to references which are not yet defined.\n *\n * For instance, `forwardRef` is used when the `token` which we need to refer to for the purposes of\n * DI is declared, but not yet defined. It is also used when the `token` which we use when creating\n * a query is not yet defined.\n *\n * `forwardRef` is also used to break circularities in standalone components imports.\n *\n * @usageNotes\n * ### Circular dependency example\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref'}\n *\n * ### Circular standalone reference import example\n * ```ts\n * @Component({\n * standalone: true,\n * imports: [ChildComponent],\n * selector: 'app-parent',\n * template: ``,\n * })\n * export class ParentComponent {\n * @Input() hideParent: boolean;\n * }\n *\n *\n * @Component({\n * standalone: true,\n * imports: [CommonModule, forwardRef(() => ParentComponent)],\n * selector: 'app-child',\n * template: ``,\n * })\n * export class ChildComponent {\n * @Input() hideParent: boolean;\n * }\n * ```\n *\n * @publicApi\n */\nfunction forwardRef(forwardRefFn) {\n forwardRefFn.__forward_ref__ = forwardRef;\n forwardRefFn.toString = function () {\n return stringify(this());\n };\n return forwardRefFn;\n}\n/**\n * Lazily retrieves the reference value from a forwardRef.\n *\n * Acts as the identity function when given a non-forward-ref value.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='resolve_forward_ref'}\n *\n * @see {@link forwardRef}\n * @publicApi\n */\nfunction resolveForwardRef(type) {\n return isForwardRef(type) ? type() : type;\n}\n/** Checks whether a function is wrapped by a `forwardRef`. */\nfunction isForwardRef(fn) {\n return typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) && fn.__forward_ref__ === forwardRef;\n}\nlet _injectorProfilerContext;\nfunction getInjectorProfilerContext() {\n !ngDevMode && throwError('getInjectorProfilerContext should never be called in production mode');\n return _injectorProfilerContext;\n}\nfunction setInjectorProfilerContext(context) {\n !ngDevMode && throwError('setInjectorProfilerContext should never be called in production mode');\n const previous = _injectorProfilerContext;\n _injectorProfilerContext = context;\n return previous;\n}\nlet injectorProfilerCallback = null;\n/**\n * Sets the callback function which will be invoked during certain DI events within the\n * runtime (for example: injecting services, creating injectable instances, configuring providers)\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 */\nconst setInjectorProfiler = injectorProfiler => {\n !ngDevMode && throwError('setInjectorProfiler should never be called in production mode');\n injectorProfilerCallback = injectorProfiler;\n};\n/**\n * Injector profiler function which emits on DI events executed by the runtime.\n *\n * @param event InjectorProfilerEvent corresponding to the DI event being emitted\n */\nfunction injectorProfiler(event) {\n !ngDevMode && throwError('Injector profiler should never be called in production mode');\n if (injectorProfilerCallback != null /* both `null` and `undefined` */) {\n injectorProfilerCallback(event);\n }\n}\n/**\n * Emits an InjectorProfilerEventType.ProviderConfigured to the injector profiler. The data in the\n * emitted event includes the raw provider, as well as the token that provider is providing.\n *\n * @param eventProvider A provider object\n */\nfunction emitProviderConfiguredEvent(eventProvider, isViewProvider = false) {\n !ngDevMode && throwError('Injector profiler should never be called in production mode');\n let token;\n // if the provider is a TypeProvider (typeof provider is function) then the token is the\n // provider itself\n if (typeof eventProvider === 'function') {\n token = eventProvider;\n }\n // if the provider is an injection token, then the token is the injection token.\n else if (eventProvider instanceof InjectionToken) {\n token = eventProvider;\n }\n // in all other cases we can access the token via the `provide` property of the provider\n else {\n token = resolveForwardRef(eventProvider.provide);\n }\n let provider = eventProvider;\n // Injection tokens may define their own default provider which gets attached to the token itself\n // as `ɵprov`. In this case, we want to emit the provider that is attached to the token, not the\n // token itself.\n if (eventProvider instanceof InjectionToken) {\n provider = eventProvider.ɵprov || eventProvider;\n }\n injectorProfiler({\n type: 2 /* InjectorProfilerEventType.ProviderConfigured */,\n context: getInjectorProfilerContext(),\n providerRecord: {\n token,\n provider,\n isViewProvider\n }\n });\n}\n/**\n * Emits an event to the injector profiler with the instance that was created. Note that\n * the injector associated with this emission can be accessed by using getDebugInjectContext()\n *\n * @param instance an object created by an injector\n */\nfunction emitInstanceCreatedByInjectorEvent(instance) {\n !ngDevMode && throwError('Injector profiler should never be called in production mode');\n injectorProfiler({\n type: 1 /* InjectorProfilerEventType.InstanceCreatedByInjector */,\n context: getInjectorProfilerContext(),\n instance: {\n value: instance\n }\n });\n}\n/**\n * @param token DI token associated with injected service\n * @param value the instance of the injected service (i.e the result of `inject(token)`)\n * @param flags the flags that the token was injected with\n */\nfunction emitInjectEvent(token, value, flags) {\n !ngDevMode && throwError('Injector profiler should never be called in production mode');\n injectorProfiler({\n type: 0 /* InjectorProfilerEventType.Inject */,\n context: getInjectorProfilerContext(),\n service: {\n token,\n value,\n flags\n }\n });\n}\nfunction runInInjectorProfilerContext(injector, token, callback) {\n !ngDevMode && throwError('runInInjectorProfilerContext should never be called in production mode');\n const prevInjectContext = setInjectorProfilerContext({\n injector,\n token\n });\n try {\n callback();\n } finally {\n setInjectorProfilerContext(prevInjectContext);\n }\n}\nfunction isEnvironmentProviders(value) {\n return value && !!value.ɵproviders;\n}\n\n/**\n * Used for stringify render output in Ivy.\n * Important! This function is very performance-sensitive and we should\n * be extra careful not to introduce megamorphic reads in it.\n * Check `core/test/render3/perf/render_stringify` for benchmarks and alternate implementations.\n */\nfunction renderStringify(value) {\n if (typeof value === 'string') return value;\n if (value == null) return '';\n // Use `String` so that it invokes the `toString` method of the value. Note that this\n // appears to be faster than calling `value.toString` (see `render_stringify` benchmark).\n return String(value);\n}\n/**\n * Used to stringify a value so that it can be displayed in an error message.\n *\n * Important! This function contains a megamorphic read and should only be\n * used for error messages.\n */\nfunction stringifyForError(value) {\n if (typeof value === 'function') return value.name || value.toString();\n if (typeof value === 'object' && value != null && typeof value.type === 'function') {\n return value.type.name || value.type.toString();\n }\n return renderStringify(value);\n}\n/**\n * Used to stringify a `Type` and including the file path and line number in which it is defined, if\n * possible, for better debugging experience.\n *\n * Important! This function contains a megamorphic read and should only be used for error messages.\n */\nfunction debugStringifyTypeForError(type) {\n // TODO(pmvald): Do some refactoring so that we can use getComponentDef here without creating\n // circular deps.\n let componentDef = type[NG_COMP_DEF] || null;\n if (componentDef !== null && componentDef.debugInfo) {\n return stringifyTypeFromDebugInfo(componentDef.debugInfo);\n }\n return stringifyForError(type);\n}\n// TODO(pmvald): Do some refactoring so that we can use the type ClassDebugInfo for the param\n// debugInfo here without creating circular deps.\nfunction stringifyTypeFromDebugInfo(debugInfo) {\n if (!debugInfo.filePath || !debugInfo.lineNumber) {\n return debugInfo.className;\n } else {\n return `${debugInfo.className} (at ${debugInfo.filePath}:${debugInfo.lineNumber})`;\n }\n}\n\n/** Called when directives inject each other (creating a circular dependency) */\nfunction throwCyclicDependencyError(token, path) {\n const depPath = path ? `. Dependency path: ${path.join(' > ')} > ${token}` : '';\n throw new RuntimeError(-200 /* RuntimeErrorCode.CYCLIC_DI_DEPENDENCY */, ngDevMode ? `Circular dependency in DI detected for ${token}${depPath}` : token);\n}\nfunction throwMixedMultiProviderError() {\n throw new Error(`Cannot mix multi providers and regular providers`);\n}\nfunction throwInvalidProviderError(ngModuleType, providers, provider) {\n if (ngModuleType && providers) {\n const providerDetail = providers.map(v => v == provider ? '?' + provider + '?' : '...');\n throw new Error(`Invalid provider for the NgModule '${stringify(ngModuleType)}' - only instances of Provider and Type are allowed, got: [${providerDetail.join(', ')}]`);\n } else if (isEnvironmentProviders(provider)) {\n if (provider.ɵfromNgModule) {\n throw new RuntimeError(207 /* RuntimeErrorCode.PROVIDER_IN_WRONG_CONTEXT */, `Invalid providers from 'importProvidersFrom' present in a non-environment injector. 'importProvidersFrom' can't be used for component providers.`);\n } else {\n throw new RuntimeError(207 /* RuntimeErrorCode.PROVIDER_IN_WRONG_CONTEXT */, `Invalid providers present in a non-environment injector. 'EnvironmentProviders' can't be used for component providers.`);\n }\n } else {\n throw new Error('Invalid provider');\n }\n}\n/** Throws an error when a token is not found in DI. */\nfunction throwProviderNotFoundError(token, injectorName) {\n const errorMessage = ngDevMode && `No provider for ${stringifyForError(token)} found${injectorName ? ` in ${injectorName}` : ''}`;\n throw new RuntimeError(-201 /* RuntimeErrorCode.PROVIDER_NOT_FOUND */, errorMessage);\n}\n\n/**\n * Current implementation of inject.\n *\n * By default, it is `injectInjectorOnly`, which makes it `Injector`-only aware. It can be changed\n * to `directiveInject`, which brings in the `NodeInjector` system of ivy. It is designed this\n * way for two reasons:\n * 1. `Injector` should not depend on ivy logic.\n * 2. To maintain tree shake-ability we don't want to bring in unnecessary code.\n */\nlet _injectImplementation;\nfunction getInjectImplementation() {\n return _injectImplementation;\n}\n/**\n * Sets the current inject implementation.\n */\nfunction setInjectImplementation(impl) {\n const previous = _injectImplementation;\n _injectImplementation = impl;\n return previous;\n}\n/**\n * Injects `root` tokens in limp mode.\n *\n * If no injector exists, we can still inject tree-shakable providers which have `providedIn` set to\n * `\"root\"`. This is known as the limp mode injection. In such case the value is stored in the\n * injectable definition.\n */\nfunction injectRootLimpMode(token, notFoundValue, flags) {\n const injectableDef = getInjectableDef(token);\n if (injectableDef && injectableDef.providedIn == 'root') {\n return injectableDef.value === undefined ? injectableDef.value = injectableDef.factory() : injectableDef.value;\n }\n if (flags & InjectFlags.Optional) return null;\n if (notFoundValue !== undefined) return notFoundValue;\n throwProviderNotFoundError(token, 'Injector');\n}\n/**\n * Assert that `_injectImplementation` is not `fn`.\n *\n * This is useful, to prevent infinite recursion.\n *\n * @param fn Function which it should not equal to\n */\nfunction assertInjectImplementationNotEqual(fn) {\n ngDevMode && assertNotEqual(_injectImplementation, fn, 'Calling ɵɵinject would cause infinite recursion');\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 */\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 */\nlet _currentInjector = undefined;\nfunction getCurrentInjector() {\n return _currentInjector;\n}\nfunction setCurrentInjector(injector) {\n const former = _currentInjector;\n _currentInjector = injector;\n return former;\n}\nfunction injectInjectorOnly(token, flags = InjectFlags.Default) {\n if (_currentInjector === undefined) {\n throw new RuntimeError(-203 /* RuntimeErrorCode.MISSING_INJECTION_CONTEXT */, ngDevMode && `inject() must be called from an injection context such as a constructor, a factory function, a field initializer, or a function used with \\`runInInjectionContext\\`.`);\n } else if (_currentInjector === null) {\n return injectRootLimpMode(token, undefined, flags);\n } else {\n const value = _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);\n ngDevMode && emitInjectEvent(token, value, flags);\n return value;\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 */\nfunction ɵɵinvalidFactoryDep(index) {\n throw new RuntimeError(202 /* RuntimeErrorCode.INVALID_FACTORY_DEPENDENCY */, 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 in an [injection context](/guide/dependency-injection-context). It can\n * be used 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 * - In a stackframe of a function call in a DI context\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`, `@SkipSelf`, 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 */\nfunction inject(token, flags = InjectFlags.Default) {\n return ɵɵinject(token, convertToBitFlags(flags));\n}\n// Converts object-based DI flags (`InjectOptions`) to bit flags (`InjectFlags`).\nfunction convertToBitFlags(flags) {\n if (typeof flags === 'undefined' || typeof flags === 'number') {\n return flags;\n }\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 return 0 /* InternalInjectFlags.Default */ | (\n // comment to force a line break in the formatter\n flags.optional && 8 /* InternalInjectFlags.Optional */) | (flags.host && 1 /* InternalInjectFlags.Host */) | (flags.self && 2 /* InternalInjectFlags.Self */) | (flags.skipSelf && 4 /* InternalInjectFlags.SkipSelf */);\n}\nfunction injectArgs(types) {\n const args = [];\n for (let i = 0; i < types.length; i++) {\n const arg = resolveForwardRef(types[i]);\n if (Array.isArray(arg)) {\n if (arg.length === 0) {\n throw new RuntimeError(900 /* RuntimeErrorCode.INVALID_DIFFER_INPUT */, ngDevMode && 'Arguments array must have arguments.');\n }\n let type = undefined;\n let flags = InjectFlags.Default;\n for (let j = 0; j < arg.length; j++) {\n const meta = arg[j];\n const flag = getInjectFlag(meta);\n if (typeof flag === 'number') {\n // Special case when we handle @Inject decorator.\n if (flag === -1 /* DecoratorFlags.Inject */) {\n type = meta.token;\n } else {\n flags |= flag;\n }\n } else {\n type = meta;\n }\n }\n args.push(ɵɵinject(type, flags));\n } else {\n args.push(ɵɵinject(arg));\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 */\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 */\nfunction getInjectFlag(token) {\n return token[DI_DECORATOR_FLAG];\n}\nfunction catchInjectorError(e, token, injectorErrorName, source) {\n const tokenPath = e[NG_TEMP_TOKEN_PATH];\n if (token[SOURCE]) {\n tokenPath.unshift(token[SOURCE]);\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}\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 if (Array.isArray(obj)) {\n context = obj.map(stringify).join(' -> ');\n } else if (typeof obj === 'object') {\n let parts = [];\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 context = `{${parts.join(', ')}}`;\n }\n return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${text.replace(NEW_LINE, '\\n ')}`;\n}\n\n/**\n * Create a `StateKey` that can be used to store value of type T with `TransferState`.\n *\n * Example:\n *\n * ```\n * const COUNTER_KEY = makeStateKey('counter');\n * let value = 10;\n *\n * transferState.set(COUNTER_KEY, value);\n * ```\n *\n * @publicApi\n */\nfunction makeStateKey(key) {\n return key;\n}\nfunction initTransferState() {\n const transferState = new TransferState();\n if (inject(PLATFORM_ID) === 'browser') {\n transferState.store = retrieveTransferredState(getDocument(), inject(APP_ID));\n }\n return transferState;\n}\n/**\n * A key value store that is transferred from the application on the server side to the application\n * on the client side.\n *\n * The `TransferState` is available as an injectable token.\n * On the client, just inject this token using DI and use it, it will be lazily initialized.\n * On the server it's already included if `renderApplication` function is used. Otherwise, import\n * the `ServerTransferStateModule` module to make the `TransferState` available.\n *\n * The values in the store are serialized/deserialized using JSON.stringify/JSON.parse. So only\n * boolean, number, string, null and non-class objects will be serialized and deserialized in a\n * non-lossy manner.\n *\n * @publicApi\n */\nlet TransferState = /*#__PURE__*/(() => {\n class TransferState {\n constructor() {\n /** @internal */\n this.store = {};\n this.onSerializeCallbacks = {};\n }\n /** @nocollapse */\n static {\n this.ɵprov = /** @pureOrBreakMyCode */ɵɵdefineInjectable({\n token: TransferState,\n providedIn: 'root',\n factory: initTransferState\n });\n }\n /**\n * Get the value corresponding to a key. Return `defaultValue` if key is not found.\n */\n get(key, defaultValue) {\n return this.store[key] !== undefined ? this.store[key] : defaultValue;\n }\n /**\n * Set the value corresponding to a key.\n */\n set(key, value) {\n this.store[key] = value;\n }\n /**\n * Remove a key from the store.\n */\n remove(key) {\n delete this.store[key];\n }\n /**\n * Test whether a key exists in the store.\n */\n hasKey(key) {\n return this.store.hasOwnProperty(key);\n }\n /**\n * Indicates whether the state is empty.\n */\n get isEmpty() {\n return Object.keys(this.store).length === 0;\n }\n /**\n * Register a callback to provide the value for a key when `toJson` is called.\n */\n onSerialize(key, callback) {\n this.onSerializeCallbacks[key] = callback;\n }\n /**\n * Serialize the current state of the store to JSON.\n */\n toJson() {\n // Call the onSerialize callbacks and put those values into the store.\n for (const key in this.onSerializeCallbacks) {\n if (this.onSerializeCallbacks.hasOwnProperty(key)) {\n try {\n this.store[key] = this.onSerializeCallbacks[key]();\n } catch (e) {\n console.warn('Exception in onSerialize callback: ', e);\n }\n }\n }\n // Escape script tag to avoid break out of