angular-docs-cn/packages/core/src/r3_symbols.ts

/**
 * @license
 * Copyright Google Inc. 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
 */

/*
 * This file exists to support compilation of @angular/core in Ivy mode.
 *
 * When the Angular compiler processes a compilation unit, it normally writes imports to
 * @angular/core. When compiling the core package itself this strategy isn't usable. Instead, the
 * compiler writes imports to this file.
 *
 * Only a subset of such imports are supported - core is not allowed to declare components or pipes.
 * A check in ngtsc's translator.ts validates this condition.
 *
 * The below symbols are used for @Injectable and @NgModule compilation.
 */

export {InjectableDef as ɵInjectableDef, InjectorDef as ɵInjectorDef, defineInjectable, defineInjector} from './di/defs';
export {inject} from './di/injector_compatibility';
export {NgModuleDef as ɵNgModuleDef, NgModuleDefWithMeta as ɵNgModuleDefWithMeta} from './metadata/ng_module';
export {defineNgModule as ɵdefineNgModule} from './render3/definition';
export {NgModuleFactory as ɵNgModuleFactory} from './render3/ng_module_ref';

/**
 * The existence of this constant (in this particular file) informs the Angular compiler that the
 * current program is actually @angular/core, which needs to be compiled specially.
 */
export const ITS_JUST_ANGULAR = true;