Almacenamiento de la instancia del inyector para su uso en componentes

Solución:

Para TypeScript y Angular 5 de hoy, evite WARNING in Circular dependency detected al importar el inyector global, primero declare un ayudante, por ejemplo app-injector.ts:

import {Injector} from '@angular/core';

/**
 * Allows for retrieving singletons using `AppInjector.get(MyService)` (whereas
 * `ReflectiveInjector.resolveAndCreate(MyService)` would create a new instance
 * of the service).
 */
export let AppInjector: Injector;

/**
 * Helper to set the exported {@link AppInjector}, needed as ES6 modules export
 * immutable bindings (see http://2ality.com/2015/07/es6-module-exports.html) for 
 * which trying to make changes after using `import {AppInjector}` would throw:
 * "TS2539: Cannot assign to 'AppInjector' because it is not a variable".
 */
export function setAppInjector(injector: Injector) {
    if (AppInjector) {
        // Should not happen
        console.error('Programming error: AppInjector was already set');
    }
    else {
        AppInjector = injector;
    }
}

A continuación, en tu AppModule, configúrelo usando:

import {Injector} from '@angular/core';
import {setAppInjector} from './app-injector';

export class AppModule {
    constructor(injector: Injector) {
        setAppInjector(injector);
    }
}

Y donde sea necesario, use:

import {AppInjector} from './app-injector';
const myService = AppInjector.get(MyService);

Me las arreglé para hacerlo usando boostrapping manual. No use “bootstrap: [AppComponent]“declaración en @NgModule, usar ngDoBootstrap método en su lugar:

export class AppModule {
    constructor(private injector: Injector) {
    }

    ngDoBootstrap(applicationRef: ApplicationRef) {
        ServiceLocator.injector = this.injector;
        applicationRef.bootstrap(AppComponent);
    }
}

Otra solución con angular 2.0.0 final:

platformBrowserDynamic().bootstrapModule(AppModule, [
  {
    defaultEncapsulation: ViewEncapsulation.Emulated,
    providers: [
      { provide: TRANSLATIONS, useValue: TRANSLATION },
      { provide: TRANSLATIONS_FORMAT, useValue: 'xlf' },
      { provide: LOCALE_ID, useValue: 'fr' }
    ]
  }
]).then((modref: NgModuleRef<any>) => {
  appInjector(modref.injector);
});

---

---

Utiliza Nuestro Buscador