@angular/router
Version:
Angular - the routing library
55 lines • 7.05 kB
JavaScript
/**
* @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.io/license
*/
import { InjectionToken, NgModuleFactory } from '@angular/core';
import { from, of } from 'rxjs';
import { map, mergeMap } from 'rxjs/operators';
import { LoadedRouterConfig, standardizeConfig } from './config';
import { flatten, wrapIntoObservable } from './utils/collection';
/**
* The [DI token](guide/glossary/#di-token) for a router configuration.
* @see `ROUTES`
* @publicApi
*/
export const ROUTES = new InjectionToken('ROUTES');
export class RouterConfigLoader {
constructor(loader, compiler, onLoadStartListener, onLoadEndListener) {
this.loader = loader;
this.compiler = compiler;
this.onLoadStartListener = onLoadStartListener;
this.onLoadEndListener = onLoadEndListener;
}
load(parentInjector, route) {
if (this.onLoadStartListener) {
this.onLoadStartListener(route);
}
const moduleFactory$ = this.loadModuleFactory(route.loadChildren);
return moduleFactory$.pipe(map((factory) => {
if (this.onLoadEndListener) {
this.onLoadEndListener(route);
}
const module = factory.create(parentInjector);
return new LoadedRouterConfig(flatten(module.injector.get(ROUTES)).map(standardizeConfig), module);
}));
}
loadModuleFactory(loadChildren) {
if (typeof loadChildren === 'string') {
return from(this.loader.load(loadChildren));
}
else {
return wrapIntoObservable(loadChildren()).pipe(mergeMap((t) => {
if (t instanceof NgModuleFactory) {
return of(t);
}
else {
return from(this.compiler.compileModuleAsync(t));
}
}));
}
}
}
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xlQXN5bmModCkpO1xuICAgICAgICB9XG4gICAgICB9KSk7XG4gICAgfVxuICB9XG59XG4iXX0=