@angular/core
Version:
Angular - the core framework
61 lines • 8.09 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 { THROW_IF_NOT_FOUND, ɵɵinject } from './injector_compatibility';
import { INJECTOR } from './injector_token';
import { ɵɵdefineInjectable } from './interface/defs';
import { NullInjector } from './null_injector';
import { createInjector } from './r3_injector';
/**
* Concrete injectors implement this interface. Injectors are configured
* with [providers](guide/glossary#provider) that associate
* dependencies of various types with [injection tokens](guide/glossary#di-token).
*
* @see ["DI Providers"](guide/dependency-injection-providers).
* @see `StaticProvider`
*
* @usageNotes
*
* The following example creates a service injector instance.
*
* {@example core/di/ts/provider_spec.ts region='ConstructorProvider'}
*
* ### Usage example
*
* {@example core/di/ts/injector_spec.ts region='Injector'}
*
* `Injector` returns itself when given `Injector` as a token:
*
* {@example core/di/ts/injector_spec.ts region='injectInjector'}
*
* @publicApi
*/
export class Injector {
static create(options, parent) {
if (Array.isArray(options)) {
return createInjector({ name: '' }, parent, options, '');
}
else {
const name = options.name ?? '';
return createInjector({ name }, options.parent, options.providers, name);
}
}
}
Injector.THROW_IF_NOT_FOUND = THROW_IF_NOT_FOUND;
Injector.NULL = ( /* @__PURE__ */new NullInjector());
/** @nocollapse */
Injector.ɵprov = ɵɵdefineInjectable({
token: Injector,
providedIn: 'any',
factory: () => ɵɵinject(INJECTOR),
});
/**
* @internal
* @nocollapse
*/
Injector.__NG_ELEMENT_ID__ = -1 /* Injector */;
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