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Angular - the routing library
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.dev/license
*/
import { HashLocationStrategy, LOCATION_INITIALIZED, LocationStrategy, ViewportScroller, } from '@angular/common';
import { APP_BOOTSTRAP_LISTENER, APP_INITIALIZER, ApplicationRef, ENVIRONMENT_INITIALIZER, inject, InjectFlags, InjectionToken, Injector, makeEnvironmentProviders, NgZone, } from '@angular/core';
import { of, Subject } from 'rxjs';
import { INPUT_BINDER, RoutedComponentInputBinder } from './directives/router_outlet';
import { stringifyEvent } from './events';
import { NAVIGATION_ERROR_HANDLER, NavigationTransitions } from './navigation_transition';
import { Router } from './router';
import { ROUTER_CONFIGURATION } from './router_config';
import { ROUTES } from './router_config_loader';
import { PreloadingStrategy, RouterPreloader } from './router_preloader';
import { ROUTER_SCROLLER, RouterScroller } from './router_scroller';
import { ActivatedRoute } from './router_state';
import { UrlSerializer } from './url_tree';
import { afterNextNavigation } from './utils/navigations';
import { CREATE_VIEW_TRANSITION, createViewTransition, VIEW_TRANSITION_OPTIONS, } from './utils/view_transition';
/**
* Sets up providers necessary to enable `Router` functionality for the application.
* Allows to configure a set of routes as well as extra features that should be enabled.
*
* @usageNotes
*
* Basic example of how you can add a Router to your application:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent, {
* providers: [provideRouter(appRoutes)]
* });
* ```
*
* You can also enable optional features in the Router by adding functions from the `RouterFeatures`
* type:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes,
* withDebugTracing(),
* withRouterConfig({paramsInheritanceStrategy: 'always'}))
* ]
* }
* );
* ```
*
* @see {@link RouterFeatures}
*
* @publicApi
* @param routes A set of `Route`s to use for the application routing table.
* @param features Optional features to configure additional router behaviors.
* @returns A set of providers to setup a Router.
*/
export function provideRouter(routes, ...features) {
return makeEnvironmentProviders([
{ provide: ROUTES, multi: true, useValue: routes },
typeof ngDevMode === 'undefined' || ngDevMode
? { provide: ROUTER_IS_PROVIDED, useValue: true }
: [],
{ provide: ActivatedRoute, useFactory: rootRoute, deps: [Router] },
{ provide: APP_BOOTSTRAP_LISTENER, multi: true, useFactory: getBootstrapListener },
features.map((feature) => feature.ɵproviders),
]);
}
export function rootRoute(router) {
return router.routerState.root;
}
/**
* Helper function to create an object that represents a Router feature.
*/
function routerFeature(kind, providers) {
return { ɵkind: kind, ɵproviders: providers };
}
/**
* An Injection token used to indicate whether `provideRouter` or `RouterModule.forRoot` was ever
* called.
*/
export const ROUTER_IS_PROVIDED = new InjectionToken('', {
providedIn: 'root',
factory: () => false,
});
const routerIsProvidedDevModeCheck = {
provide: ENVIRONMENT_INITIALIZER,
multi: true,
useFactory() {
return () => {
if (!inject(ROUTER_IS_PROVIDED)) {
console.warn('`provideRoutes` was called without `provideRouter` or `RouterModule.forRoot`. ' +
'This is likely a mistake.');
}
};
},
};
/**
* Registers a DI provider for a set of routes.
* @param routes The route configuration to provide.
*
* @usageNotes
*
* ```
* @NgModule({
* providers: [provideRoutes(ROUTES)]
* })
* class LazyLoadedChildModule {}
* ```
*
* @deprecated If necessary, provide routes using the `ROUTES` `InjectionToken`.
* @see {@link ROUTES}
* @publicApi
*/
export function provideRoutes(routes) {
return [
{ provide: ROUTES, multi: true, useValue: routes },
typeof ngDevMode === 'undefined' || ngDevMode ? routerIsProvidedDevModeCheck : [],
];
}
/**
* Enables customizable scrolling behavior for router navigations.
*
* @usageNotes
*
* Basic example of how you can enable scrolling feature:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withInMemoryScrolling())
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
* @see {@link ViewportScroller}
*
* @publicApi
* @param options Set of configuration parameters to customize scrolling behavior, see
* `InMemoryScrollingOptions` for additional information.
* @returns A set of providers for use with `provideRouter`.
*/
export function withInMemoryScrolling(options = {}) {
const providers = [
{
provide: ROUTER_SCROLLER,
useFactory: () => {
const viewportScroller = inject(ViewportScroller);
const zone = inject(NgZone);
const transitions = inject(NavigationTransitions);
const urlSerializer = inject(UrlSerializer);
return new RouterScroller(urlSerializer, transitions, viewportScroller, zone, options);
},
},
];
return routerFeature(4 /* RouterFeatureKind.InMemoryScrollingFeature */, providers);
}
export function getBootstrapListener() {
const injector = inject(Injector);
return (bootstrappedComponentRef) => {
const ref = injector.get(ApplicationRef);
if (bootstrappedComponentRef !== ref.components[0]) {
return;
}
const router = injector.get(Router);
const bootstrapDone = injector.get(BOOTSTRAP_DONE);
if (injector.get(INITIAL_NAVIGATION) === 1 /* InitialNavigation.EnabledNonBlocking */) {
router.initialNavigation();
}
injector.get(ROUTER_PRELOADER, null, InjectFlags.Optional)?.setUpPreloading();
injector.get(ROUTER_SCROLLER, null, InjectFlags.Optional)?.init();
router.resetRootComponentType(ref.componentTypes[0]);
if (!bootstrapDone.closed) {
bootstrapDone.next();
bootstrapDone.complete();
bootstrapDone.unsubscribe();
}
};
}
/**
* A subject used to indicate that the bootstrapping phase is done. When initial navigation is
* `enabledBlocking`, the first navigation waits until bootstrapping is finished before continuing
* to the activation phase.
*/
const BOOTSTRAP_DONE = new InjectionToken(typeof ngDevMode === 'undefined' || ngDevMode ? 'bootstrap done indicator' : '', {
factory: () => {
return new Subject();
},
});
const INITIAL_NAVIGATION = new InjectionToken(typeof ngDevMode === 'undefined' || ngDevMode ? 'initial navigation' : '', { providedIn: 'root', factory: () => 1 /* InitialNavigation.EnabledNonBlocking */ });
/**
* Configures initial navigation to start before the root component is created.
*
* The bootstrap is blocked until the initial navigation is complete. This should be set in case
* you use [server-side rendering](guide/ssr), but do not enable [hydration](guide/hydration) for
* your application.
*
* @usageNotes
*
* Basic example of how you can enable this navigation behavior:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withEnabledBlockingInitialNavigation())
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
*
* @publicApi
* @returns A set of providers for use with `provideRouter`.
*/
export function withEnabledBlockingInitialNavigation() {
const providers = [
{ provide: INITIAL_NAVIGATION, useValue: 0 /* InitialNavigation.EnabledBlocking */ },
{
provide: APP_INITIALIZER,
multi: true,
deps: [Injector],
useFactory: (injector) => {
const locationInitialized = injector.get(LOCATION_INITIALIZED, Promise.resolve());
return () => {
return locationInitialized.then(() => {
return new Promise((resolve) => {
const router = injector.get(Router);
const bootstrapDone = injector.get(BOOTSTRAP_DONE);
afterNextNavigation(router, () => {
// Unblock APP_INITIALIZER in case the initial navigation was canceled or errored
// without a redirect.
resolve(true);
});
injector.get(NavigationTransitions).afterPreactivation = () => {
// Unblock APP_INITIALIZER once we get to `afterPreactivation`. At this point, we
// assume activation will complete successfully (even though this is not
// guaranteed).
resolve(true);
return bootstrapDone.closed ? of(void 0) : bootstrapDone;
};
router.initialNavigation();
});
});
};
},
},
];
return routerFeature(2 /* RouterFeatureKind.EnabledBlockingInitialNavigationFeature */, providers);
}
/**
* Disables initial navigation.
*
* Use if there is a reason to have more control over when the router starts its initial navigation
* due to some complex initialization logic.
*
* @usageNotes
*
* Basic example of how you can disable initial navigation:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withDisabledInitialNavigation())
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
*
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withDisabledInitialNavigation() {
const providers = [
{
provide: APP_INITIALIZER,
multi: true,
useFactory: () => {
const router = inject(Router);
return () => {
router.setUpLocationChangeListener();
};
},
},
{ provide: INITIAL_NAVIGATION, useValue: 2 /* InitialNavigation.Disabled */ },
];
return routerFeature(3 /* RouterFeatureKind.DisabledInitialNavigationFeature */, providers);
}
/**
* Enables logging of all internal navigation events to the console.
* Extra logging might be useful for debugging purposes to inspect Router event sequence.
*
* @usageNotes
*
* Basic example of how you can enable debug tracing:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withDebugTracing())
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
*
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withDebugTracing() {
let providers = [];
if (typeof ngDevMode === 'undefined' || ngDevMode) {
providers = [
{
provide: ENVIRONMENT_INITIALIZER,
multi: true,
useFactory: () => {
const router = inject(Router);
return () => router.events.subscribe((e) => {
// tslint:disable:no-console
console.group?.(`Router Event: ${e.constructor.name}`);
console.log(stringifyEvent(e));
console.log(e);
console.groupEnd?.();
// tslint:enable:no-console
});
},
},
];
}
else {
providers = [];
}
return routerFeature(1 /* RouterFeatureKind.DebugTracingFeature */, providers);
}
const ROUTER_PRELOADER = new InjectionToken(typeof ngDevMode === 'undefined' || ngDevMode ? 'router preloader' : '');
/**
* Allows to configure a preloading strategy to use. The strategy is configured by providing a
* reference to a class that implements a `PreloadingStrategy`.
*
* @usageNotes
*
* Basic example of how you can configure preloading:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withPreloading(PreloadAllModules))
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
*
* @param preloadingStrategy A reference to a class that implements a `PreloadingStrategy` that
* should be used.
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withPreloading(preloadingStrategy) {
const providers = [
{ provide: ROUTER_PRELOADER, useExisting: RouterPreloader },
{ provide: PreloadingStrategy, useExisting: preloadingStrategy },
];
return routerFeature(0 /* RouterFeatureKind.PreloadingFeature */, providers);
}
/**
* Allows to provide extra parameters to configure Router.
*
* @usageNotes
*
* Basic example of how you can provide extra configuration options:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withRouterConfig({
* onSameUrlNavigation: 'reload'
* }))
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
*
* @param options A set of parameters to configure Router, see `RouterConfigOptions` for
* additional information.
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withRouterConfig(options) {
const providers = [{ provide: ROUTER_CONFIGURATION, useValue: options }];
return routerFeature(5 /* RouterFeatureKind.RouterConfigurationFeature */, providers);
}
/**
* Provides the location strategy that uses the URL fragment instead of the history API.
*
* @usageNotes
*
* Basic example of how you can use the hash location option:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withHashLocation())
* ]
* }
* );
* ```
*
* @see {@link provideRouter}
* @see {@link HashLocationStrategy}
*
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withHashLocation() {
const providers = [{ provide: LocationStrategy, useClass: HashLocationStrategy }];
return routerFeature(6 /* RouterFeatureKind.RouterHashLocationFeature */, providers);
}
/**
* Provides a function which is called when a navigation error occurs.
*
* This function is run inside application's [injection context](guide/di/dependency-injection-context)
* so you can use the [`inject`](api/core/inject) function.
*
* This function can return a `RedirectCommand` to convert the error to a redirect, similar to returning
* a `UrlTree` or `RedirectCommand` from a guard. This will also prevent the `Router` from emitting
* `NavigationError`; it will instead emit `NavigationCancel` with code NavigationCancellationCode.Redirect.
* Return values other than `RedirectCommand` are ignored and do not change any behavior with respect to
* how the `Router` handles the error.
*
* @usageNotes
*
* Basic example of how you can use the error handler option:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withNavigationErrorHandler((e: NavigationError) =>
* inject(MyErrorTracker).trackError(e)))
* ]
* }
* );
* ```
*
* @see {@link NavigationError}
* @see {@link core/inject}
* @see {@link runInInjectionContext}
*
* @returns A set of providers for use with `provideRouter`.
*
* @publicApi
*/
export function withNavigationErrorHandler(handler) {
const providers = [
{
provide: NAVIGATION_ERROR_HANDLER,
useValue: handler,
},
];
return routerFeature(7 /* RouterFeatureKind.NavigationErrorHandlerFeature */, providers);
}
/**
* Enables binding information from the `Router` state directly to the inputs of the component in
* `Route` configurations.
*
* @usageNotes
*
* Basic example of how you can enable the feature:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withComponentInputBinding())
* ]
* }
* );
* ```
*
* The router bindings information from any of the following sources:
*
* - query parameters
* - path and matrix parameters
* - static route data
* - data from resolvers
*
* Duplicate keys are resolved in the same order from above, from least to greatest,
* meaning that resolvers have the highest precedence and override any of the other information
* from the route.
*
* Importantly, when an input does not have an item in the route data with a matching key, this
* input is set to `undefined`. This prevents previous information from being
* retained if the data got removed from the route (i.e. if a query parameter is removed).
* Default values can be provided with a resolver on the route to ensure the value is always present
* or an input and use an input transform in the component.
*
* @see {@link guide/components/inputs#input-transforms input transforms}
* @returns A set of providers for use with `provideRouter`.
*/
export function withComponentInputBinding() {
const providers = [
RoutedComponentInputBinder,
{ provide: INPUT_BINDER, useExisting: RoutedComponentInputBinder },
];
return routerFeature(8 /* RouterFeatureKind.ComponentInputBindingFeature */, providers);
}
/**
* Enables view transitions in the Router by running the route activation and deactivation inside of
* `document.startViewTransition`.
*
* Note: The View Transitions API is not available in all browsers. If the browser does not support
* view transitions, the Router will not attempt to start a view transition and continue processing
* the navigation as usual.
*
* @usageNotes
*
* Basic example of how you can enable the feature:
* ```
* const appRoutes: Routes = [];
* bootstrapApplication(AppComponent,
* {
* providers: [
* provideRouter(appRoutes, withViewTransitions())
* ]
* }
* );
* ```
*
* @returns A set of providers for use with `provideRouter`.
* @see https://developer.chrome.com/docs/web-platform/view-transitions/
* @see https://developer.mozilla.org/en-US/docs/Web/API/View_Transitions_API
* @developerPreview
*/
export function withViewTransitions(options) {
const providers = [
{ provide: CREATE_VIEW_TRANSITION, useValue: createViewTransition },
{
provide: VIEW_TRANSITION_OPTIONS,
useValue: { skipNextTransition: !!options?.skipInitialTransition, ...options },
},
];
return routerFeature(9 /* RouterFeatureKind.ViewTransitionsFeature */, providers);
}
//# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {\n  HashLocationStrategy,\n  LOCATION_INITIALIZED,\n  LocationStrategy,\n  ViewportScroller,\n} from '@angular/common';\nimport {\n  APP_BOOTSTRAP_LISTENER,\n  APP_INITIALIZER,\n  ApplicationRef,\n  ComponentRef,\n  ENVIRONMENT_INITIALIZER,\n  EnvironmentProviders,\n  inject,\n  InjectFlags,\n  InjectionToken,\n  Injector,\n  makeEnvironmentProviders,\n  NgZone,\n  Provider,\n  runInInjectionContext,\n  Type,\n} from '@angular/core';\nimport {of, Subject} from 'rxjs';\n\nimport {INPUT_BINDER, RoutedComponentInputBinder} from './directives/router_outlet';\nimport {Event, NavigationError, stringifyEvent} from './events';\nimport {RedirectCommand, Routes} from './models';\nimport {NAVIGATION_ERROR_HANDLER, NavigationTransitions} from './navigation_transition';\nimport {Router} from './router';\nimport {InMemoryScrollingOptions, ROUTER_CONFIGURATION, RouterConfigOptions} from './router_config';\nimport {ROUTES} from './router_config_loader';\nimport {PreloadingStrategy, RouterPreloader} from './router_preloader';\nimport {ROUTER_SCROLLER, RouterScroller} from './router_scroller';\nimport {ActivatedRoute} from './router_state';\nimport {UrlSerializer} from './url_tree';\nimport {afterNextNavigation} from './utils/navigations';\nimport {\n  CREATE_VIEW_TRANSITION,\n  createViewTransition,\n  VIEW_TRANSITION_OPTIONS,\n  ViewTransitionsFeatureOptions,\n} from './utils/view_transition';\n\n/**\n * Sets up providers necessary to enable `Router` functionality for the application.\n * Allows to configure a set of routes as well as extra features that should be enabled.\n *\n * @usageNotes\n *\n * Basic example of how you can add a Router to your application:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent, {\n *   providers: [provideRouter(appRoutes)]\n * });\n * ```\n *\n * You can also enable optional features in the Router by adding functions from the `RouterFeatures`\n * type:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes,\n *         withDebugTracing(),\n *         withRouterConfig({paramsInheritanceStrategy: 'always'}))\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link RouterFeatures}\n *\n * @publicApi\n * @param routes A set of `Route`s to use for the application routing table.\n * @param features Optional features to configure additional router behaviors.\n * @returns A set of providers to setup a Router.\n */\nexport function provideRouter(routes: Routes, ...features: RouterFeatures[]): EnvironmentProviders {\n  return makeEnvironmentProviders([\n    {provide: ROUTES, multi: true, useValue: routes},\n    typeof ngDevMode === 'undefined' || ngDevMode\n      ? {provide: ROUTER_IS_PROVIDED, useValue: true}\n      : [],\n    {provide: ActivatedRoute, useFactory: rootRoute, deps: [Router]},\n    {provide: APP_BOOTSTRAP_LISTENER, multi: true, useFactory: getBootstrapListener},\n    features.map((feature) => feature.ɵproviders),\n  ]);\n}\n\nexport function rootRoute(router: Router): ActivatedRoute {\n  return router.routerState.root;\n}\n\n/**\n * Helper type to represent a Router feature.\n *\n * @publicApi\n */\nexport interface RouterFeature<FeatureKind extends RouterFeatureKind> {\n  ɵkind: FeatureKind;\n  ɵproviders: Provider[];\n}\n\n/**\n * Helper function to create an object that represents a Router feature.\n */\nfunction routerFeature<FeatureKind extends RouterFeatureKind>(\n  kind: FeatureKind,\n  providers: Provider[],\n): RouterFeature<FeatureKind> {\n  return {ɵkind: kind, ɵproviders: providers};\n}\n\n/**\n * An Injection token used to indicate whether `provideRouter` or `RouterModule.forRoot` was ever\n * called.\n */\nexport const ROUTER_IS_PROVIDED = new InjectionToken<boolean>('', {\n  providedIn: 'root',\n  factory: () => false,\n});\n\nconst routerIsProvidedDevModeCheck = {\n  provide: ENVIRONMENT_INITIALIZER,\n  multi: true,\n  useFactory() {\n    return () => {\n      if (!inject(ROUTER_IS_PROVIDED)) {\n        console.warn(\n          '`provideRoutes` was called without `provideRouter` or `RouterModule.forRoot`. ' +\n            'This is likely a mistake.',\n        );\n      }\n    };\n  },\n};\n\n/**\n * Registers a DI provider for a set of routes.\n * @param routes The route configuration to provide.\n *\n * @usageNotes\n *\n * ```\n * @NgModule({\n *   providers: [provideRoutes(ROUTES)]\n * })\n * class LazyLoadedChildModule {}\n * ```\n *\n * @deprecated If necessary, provide routes using the `ROUTES` `InjectionToken`.\n * @see {@link ROUTES}\n * @publicApi\n */\nexport function provideRoutes(routes: Routes): Provider[] {\n  return [\n    {provide: ROUTES, multi: true, useValue: routes},\n    typeof ngDevMode === 'undefined' || ngDevMode ? routerIsProvidedDevModeCheck : [],\n  ];\n}\n\n/**\n * A type alias for providers returned by `withInMemoryScrolling` for use with `provideRouter`.\n *\n * @see {@link withInMemoryScrolling}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type InMemoryScrollingFeature = RouterFeature<RouterFeatureKind.InMemoryScrollingFeature>;\n\n/**\n * Enables customizable scrolling behavior for router navigations.\n *\n * @usageNotes\n *\n * Basic example of how you can enable scrolling feature:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withInMemoryScrolling())\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n * @see {@link ViewportScroller}\n *\n * @publicApi\n * @param options Set of configuration parameters to customize scrolling behavior, see\n *     `InMemoryScrollingOptions` for additional information.\n * @returns A set of providers for use with `provideRouter`.\n */\nexport function withInMemoryScrolling(\n  options: InMemoryScrollingOptions = {},\n): InMemoryScrollingFeature {\n  const providers = [\n    {\n      provide: ROUTER_SCROLLER,\n      useFactory: () => {\n        const viewportScroller = inject(ViewportScroller);\n        const zone = inject(NgZone);\n        const transitions = inject(NavigationTransitions);\n        const urlSerializer = inject(UrlSerializer);\n        return new RouterScroller(urlSerializer, transitions, viewportScroller, zone, options);\n      },\n    },\n  ];\n  return routerFeature(RouterFeatureKind.InMemoryScrollingFeature, providers);\n}\n\nexport function getBootstrapListener() {\n  const injector = inject(Injector);\n  return (bootstrappedComponentRef: ComponentRef<unknown>) => {\n    const ref = injector.get(ApplicationRef);\n\n    if (bootstrappedComponentRef !== ref.components[0]) {\n      return;\n    }\n\n    const router = injector.get(Router);\n    const bootstrapDone = injector.get(BOOTSTRAP_DONE);\n\n    if (injector.get(INITIAL_NAVIGATION) === InitialNavigation.EnabledNonBlocking) {\n      router.initialNavigation();\n    }\n\n    injector.get(ROUTER_PRELOADER, null, InjectFlags.Optional)?.setUpPreloading();\n    injector.get(ROUTER_SCROLLER, null, InjectFlags.Optional)?.init();\n    router.resetRootComponentType(ref.componentTypes[0]);\n    if (!bootstrapDone.closed) {\n      bootstrapDone.next();\n      bootstrapDone.complete();\n      bootstrapDone.unsubscribe();\n    }\n  };\n}\n\n/**\n * A subject used to indicate that the bootstrapping phase is done. When initial navigation is\n * `enabledBlocking`, the first navigation waits until bootstrapping is finished before continuing\n * to the activation phase.\n */\nconst BOOTSTRAP_DONE = new InjectionToken<Subject<void>>(\n  typeof ngDevMode === 'undefined' || ngDevMode ? 'bootstrap done indicator' : '',\n  {\n    factory: () => {\n      return new Subject<void>();\n    },\n  },\n);\n\n/**\n * This and the INITIAL_NAVIGATION token are used internally only. The public API side of this is\n * configured through the `ExtraOptions`.\n *\n * When set to `EnabledBlocking`, the initial navigation starts before the root\n * component is created. The bootstrap is blocked until the initial navigation is complete. This\n * value should be set in case you use [server-side rendering](guide/ssr), but do not enable\n * [hydration](guide/hydration) for your application.\n *\n * When set to `EnabledNonBlocking`, the initial navigation starts after the root component has been\n * created. The bootstrap is not blocked on the completion of the initial navigation.\n *\n * When set to `Disabled`, the initial navigation is not performed. The location listener is set up\n * before the root component gets created. Use if there is a reason to have more control over when\n * the router starts its initial navigation due to some complex initialization logic.\n *\n * @see {@link ExtraOptions}\n */\nconst enum InitialNavigation {\n  EnabledBlocking,\n  EnabledNonBlocking,\n  Disabled,\n}\n\nconst INITIAL_NAVIGATION = new InjectionToken<InitialNavigation>(\n  typeof ngDevMode === 'undefined' || ngDevMode ? 'initial navigation' : '',\n  {providedIn: 'root', factory: () => InitialNavigation.EnabledNonBlocking},\n);\n\n/**\n * A type alias for providers returned by `withEnabledBlockingInitialNavigation` for use with\n * `provideRouter`.\n *\n * @see {@link withEnabledBlockingInitialNavigation}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type EnabledBlockingInitialNavigationFeature =\n  RouterFeature<RouterFeatureKind.EnabledBlockingInitialNavigationFeature>;\n\n/**\n * A type alias for providers returned by `withEnabledBlockingInitialNavigation` or\n * `withDisabledInitialNavigation` functions for use with `provideRouter`.\n *\n * @see {@link withEnabledBlockingInitialNavigation}\n * @see {@link withDisabledInitialNavigation}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type InitialNavigationFeature =\n  | EnabledBlockingInitialNavigationFeature\n  | DisabledInitialNavigationFeature;\n\n/**\n * Configures initial navigation to start before the root component is created.\n *\n * The bootstrap is blocked until the initial navigation is complete. This should be set in case\n * you use [server-side rendering](guide/ssr), but do not enable [hydration](guide/hydration) for\n * your application.\n *\n * @usageNotes\n *\n * Basic example of how you can enable this navigation behavior:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withEnabledBlockingInitialNavigation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n *\n * @publicApi\n * @returns A set of providers for use with `provideRouter`.\n */\nexport function withEnabledBlockingInitialNavigation(): EnabledBlockingInitialNavigationFeature {\n  const providers = [\n    {provide: INITIAL_NAVIGATION, useValue: InitialNavigation.EnabledBlocking},\n    {\n      provide: APP_INITIALIZER,\n      multi: true,\n      deps: [Injector],\n      useFactory: (injector: Injector) => {\n        const locationInitialized: Promise<any> = injector.get(\n          LOCATION_INITIALIZED,\n          Promise.resolve(),\n        );\n\n        return () => {\n          return locationInitialized.then(() => {\n            return new Promise((resolve) => {\n              const router = injector.get(Router);\n              const bootstrapDone = injector.get(BOOTSTRAP_DONE);\n              afterNextNavigation(router, () => {\n                // Unblock APP_INITIALIZER in case the initial navigation was canceled or errored\n                // without a redirect.\n                resolve(true);\n              });\n\n              injector.get(NavigationTransitions).afterPreactivation = () => {\n                // Unblock APP_INITIALIZER once we get to `afterPreactivation`. At this point, we\n                // assume activation will complete successfully (even though this is not\n                // guaranteed).\n                resolve(true);\n                return bootstrapDone.closed ? of(void 0) : bootstrapDone;\n              };\n              router.initialNavigation();\n            });\n          });\n        };\n      },\n    },\n  ];\n  return routerFeature(RouterFeatureKind.EnabledBlockingInitialNavigationFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withDisabledInitialNavigation` for use with\n * `provideRouter`.\n *\n * @see {@link withDisabledInitialNavigation}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type DisabledInitialNavigationFeature =\n  RouterFeature<RouterFeatureKind.DisabledInitialNavigationFeature>;\n\n/**\n * Disables initial navigation.\n *\n * Use if there is a reason to have more control over when the router starts its initial navigation\n * due to some complex initialization logic.\n *\n * @usageNotes\n *\n * Basic example of how you can disable initial navigation:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withDisabledInitialNavigation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withDisabledInitialNavigation(): DisabledInitialNavigationFeature {\n  const providers = [\n    {\n      provide: APP_INITIALIZER,\n      multi: true,\n      useFactory: () => {\n        const router = inject(Router);\n        return () => {\n          router.setUpLocationChangeListener();\n        };\n      },\n    },\n    {provide: INITIAL_NAVIGATION, useValue: InitialNavigation.Disabled},\n  ];\n  return routerFeature(RouterFeatureKind.DisabledInitialNavigationFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withDebugTracing` for use with `provideRouter`.\n *\n * @see {@link withDebugTracing}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type DebugTracingFeature = RouterFeature<RouterFeatureKind.DebugTracingFeature>;\n\n/**\n * Enables logging of all internal navigation events to the console.\n * Extra logging might be useful for debugging purposes to inspect Router event sequence.\n *\n * @usageNotes\n *\n * Basic example of how you can enable debug tracing:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withDebugTracing())\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withDebugTracing(): DebugTracingFeature {\n  let providers: Provider[] = [];\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    providers = [\n      {\n        provide: ENVIRONMENT_INITIALIZER,\n        multi: true,\n        useFactory: () => {\n          const router = inject(Router);\n          return () =>\n            router.events.subscribe((e: Event) => {\n              // tslint:disable:no-console\n              console.group?.(`Router Event: ${(<any>e.constructor).name}`);\n              console.log(stringifyEvent(e));\n              console.log(e);\n              console.groupEnd?.();\n              // tslint:enable:no-console\n            });\n        },\n      },\n    ];\n  } else {\n    providers = [];\n  }\n  return routerFeature(RouterFeatureKind.DebugTracingFeature, providers);\n}\n\nconst ROUTER_PRELOADER = new InjectionToken<RouterPreloader>(\n  typeof ngDevMode === 'undefined' || ngDevMode ? 'router preloader' : '',\n);\n\n/**\n * A type alias that represents a feature which enables preloading in Router.\n * The type is used to describe the return value of the `withPreloading` function.\n *\n * @see {@link withPreloading}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type PreloadingFeature = RouterFeature<RouterFeatureKind.PreloadingFeature>;\n\n/**\n * Allows to configure a preloading strategy to use. The strategy is configured by providing a\n * reference to a class that implements a `PreloadingStrategy`.\n *\n * @usageNotes\n *\n * Basic example of how you can configure preloading:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withPreloading(PreloadAllModules))\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n *\n * @param preloadingStrategy A reference to a class that implements a `PreloadingStrategy` that\n *     should be used.\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withPreloading(preloadingStrategy: Type<PreloadingStrategy>): PreloadingFeature {\n  const providers = [\n    {provide: ROUTER_PRELOADER, useExisting: RouterPreloader},\n    {provide: PreloadingStrategy, useExisting: preloadingStrategy},\n  ];\n  return routerFeature(RouterFeatureKind.PreloadingFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withRouterConfig` for use with `provideRouter`.\n *\n * @see {@link withRouterConfig}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type RouterConfigurationFeature =\n  RouterFeature<RouterFeatureKind.RouterConfigurationFeature>;\n\n/**\n * Allows to provide extra parameters to configure Router.\n *\n * @usageNotes\n *\n * Basic example of how you can provide extra configuration options:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withRouterConfig({\n *          onSameUrlNavigation: 'reload'\n *       }))\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n *\n * @param options A set of parameters to configure Router, see `RouterConfigOptions` for\n *     additional information.\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withRouterConfig(options: RouterConfigOptions): RouterConfigurationFeature {\n  const providers = [{provide: ROUTER_CONFIGURATION, useValue: options}];\n  return routerFeature(RouterFeatureKind.RouterConfigurationFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withHashLocation` for use with `provideRouter`.\n *\n * @see {@link withHashLocation}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type RouterHashLocationFeature = RouterFeature<RouterFeatureKind.RouterHashLocationFeature>;\n\n/**\n * Provides the location strategy that uses the URL fragment instead of the history API.\n *\n * @usageNotes\n *\n * Basic example of how you can use the hash location option:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withHashLocation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link provideRouter}\n * @see {@link HashLocationStrategy}\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withHashLocation(): RouterHashLocationFeature {\n  const providers = [{provide: LocationStrategy, useClass: HashLocationStrategy}];\n  return routerFeature(RouterFeatureKind.RouterHashLocationFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withNavigationErrorHandler` for use with `provideRouter`.\n *\n * @see {@link withNavigationErrorHandler}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type NavigationErrorHandlerFeature =\n  RouterFeature<RouterFeatureKind.NavigationErrorHandlerFeature>;\n\n/**\n * Provides a function which is called when a navigation error occurs.\n *\n * This function is run inside application's [injection context](guide/di/dependency-injection-context)\n * so you can use the [`inject`](api/core/inject) function.\n *\n * This function can return a `RedirectCommand` to convert the error to a redirect, similar to returning\n * a `UrlTree` or `RedirectCommand` from a guard. This will also prevent the `Router` from emitting\n * `NavigationError`; it will instead emit `NavigationCancel` with code NavigationCancellationCode.Redirect.\n * Return values other than `RedirectCommand` are ignored and do not change any behavior with respect to\n * how the `Router` handles the error.\n *\n * @usageNotes\n *\n * Basic example of how you can use the error handler option:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withNavigationErrorHandler((e: NavigationError) =>\n * inject(MyErrorTracker).trackError(e)))\n *     ]\n *   }\n * );\n * ```\n *\n * @see {@link NavigationError}\n * @see {@link core/inject}\n * @see {@link runInInjectionContext}\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nexport function withNavigationErrorHandler(\n  handler: (error: NavigationError) => unknown | RedirectCommand,\n): NavigationErrorHandlerFeature {\n  const providers = [\n    {\n      provide: NAVIGATION_ERROR_HANDLER,\n      useValue: handler,\n    },\n  ];\n  return routerFeature(RouterFeatureKind.NavigationErrorHandlerFeature, providers);\n}\n\n/**\n * A type alias for providers returned by `withComponentInputBinding` for use with `provideRouter`.\n *\n * @see {@link withComponentInputBinding}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type ComponentInputBindingFeature =\n  RouterFeature<RouterFeatureKind.ComponentInputBindingFeature>;\n\n/**\n * A type alias for providers returned by `withViewTransitions` for use with `provideRouter`.\n *\n * @see {@link withViewTransitions}\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type ViewTransitionsFeature = RouterFeature<RouterFeatureKind.ViewTransitionsFeature>;\n\n/**\n * Enables binding information from the `Router` state directly to the inputs of the component in\n * `Route` configurations.\n *\n * @usageNotes\n *\n * Basic example of how you can enable the feature:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withComponentInputBinding())\n *     ]\n *   }\n * );\n * ```\n *\n * The router bindings information from any of the following sources:\n *\n *  - query parameters\n *  - path and matrix parameters\n *  - static route data\n *  - data from resolvers\n *\n * Duplicate keys are resolved in the same order from above, from least to greatest,\n * meaning that resolvers have the highest precedence and override any of the other information\n * from the route.\n *\n * Importantly, when an input does not have an item in the route data with a matching key, this\n * input is set to `undefined`. This prevents previous information from being\n * retained if the data got removed from the route (i.e. if a query parameter is removed).\n * Default values can be provided with a resolver on the route to ensure the value is always present\n * or an input and use an input transform in the component.\n *\n * @see {@link guide/components/inputs#input-transforms input transforms}\n * @returns A set of providers for use with `provideRouter`.\n */\nexport function withComponentInputBinding(): ComponentInputBindingFeature {\n  const providers = [\n    RoutedComponentInputBinder,\n    {provide: INPUT_BINDER, useExisting: RoutedComponentInputBinder},\n  ];\n\n  return routerFeature(RouterFeatureKind.ComponentInputBindingFeature, providers);\n}\n\n/**\n * Enables view transitions in the Router by running the route activation and deactivation inside of\n * `document.startViewTransition`.\n *\n * Note: The View Transitions API is not available in all browsers. If the browser does not support\n * view transitions, the Router will not attempt to start a view transition and continue processing\n * the navigation as usual.\n *\n * @usageNotes\n *\n * Basic example of how you can enable the feature:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withViewTransitions())\n *     ]\n *   }\n * );\n * ```\n *\n * @returns A set of providers for use with `provideRouter`.\n * @see https://developer.chrome.com/docs/web-platform/view-transitions/\n * @see https://developer.mozilla.org/en-US/docs/Web/API/View_Transitions_API\n * @developerPreview\n */\nexport function withViewTransitions(\n  options?: ViewTransitionsFeatureOptions,\n): ViewTransitionsFeature {\n  const providers = [\n    {provide: CREATE_VIEW_TRANSITION, useValue: createViewTransition},\n    {\n      provide: VIEW_TRANSITION_OPTIONS,\n      useValue: {skipNextTransition: !!options?.skipInitialTransition, ...options},\n    },\n  ];\n  return routerFeature(RouterFeatureKind.ViewTransitionsFeature, providers);\n}\n\n/**\n * A type alias that represents all Router features available for use with `provideRouter`.\n * Features can be enabled by adding special functions to the `provideRouter` call.\n * See documentation for each symbol to find corresponding function name. See also `provideRouter`\n * documentation on how to use those functions.\n *\n * @see {@link provideRouter}\n *\n * @publicApi\n */\nexport type RouterFeatures =\n  | PreloadingFeature\n  | DebugTracingFeature\n  | InitialNavigationFeature\n  | InMemoryScrollingFeature\n  | RouterConfigurationFeature\n  | NavigationErrorHandlerFeature\n  | ComponentInputBindingFeature\n  | ViewTransitionsFeature\n  | RouterHashLocationFeature;\n\n/**\n * The list of features as an enum to uniquely type each feature.\n */\nexport const enum RouterFeatureKind {\n  PreloadingFeature,\n  DebugTracingFeature,\n  EnabledBlockingInitialNavigationFeature,\n  DisabledInitialNavigationFeature,\n  InMemoryScrollingFeature,\n  RouterConfigurationFeature,\n  RouterHashLocationFeature,\n  NavigationErrorHandlerFeature,\n  ComponentInputBindingFeature,\n  ViewTransitionsFeature,\n}\n"]}