4e35e348af
With #31953 we moved the factories for components, directives and pipes into a new field called `ngFactoryDef`, however I decided not to do it for injectables, because they needed some extra logic. These changes set up the `ngFactoryDef` for injectables as well. For reference, the extra logic mentioned above is that for injectables we have two code paths: 1. For injectables that don't configure how they should be instantiated, we create a `factory` that proxies to `ngFactoryDef`: ``` // Source @Injectable() class Service {} // Output class Service { static ngInjectableDef = defineInjectable({ factory: () => Service.ngFactoryFn(), }); static ngFactoryFn: (t) => new (t || Service)(); } ``` 2. For injectables that do configure how they're created, we keep the `ngFactoryDef` and generate the factory based on the metadata: ``` // Source @Injectable({ useValue: DEFAULT_IMPL, }) class Service {} // Output export class Service { static ngInjectableDef = defineInjectable({ factory: () => DEFAULT_IMPL, }); static ngFactoryFn: (t) => new (t || Service)(); } ``` PR Close #32433
39 lines
1.6 KiB
TypeScript
39 lines
1.6 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/*
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* This file exists to support compilation of @angular/core in Ivy mode.
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*
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* When the Angular compiler processes a compilation unit, it normally writes imports to
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* @angular/core. When compiling the core package itself this strategy isn't usable. Instead, the
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* compiler writes imports to this file.
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*
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* Only a subset of such imports are supported - core is not allowed to declare components or pipes.
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* A check in ngtsc's `R3SymbolsImportRewriter` validates this condition. The rewriter is only used
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* when compiling @angular/core and is responsible for translating an external name (prefixed with
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* ɵ) to the internal symbol name as exported below.
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*
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* The below symbols are used for @Injectable and @NgModule compilation.
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*/
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export {ɵɵinject} from './di/injector_compatibility';
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export {ɵɵInjectableDef, ɵɵInjectorDef, ɵɵdefineInjectable, ɵɵdefineInjector} from './di/interface/defs';
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export {NgModuleDef, ɵɵNgModuleDefWithMeta} from './metadata/ng_module';
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export {ɵɵdefineNgModule} from './render3/definition';
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export {ɵɵFactoryDef} from './render3/interfaces/definition';
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export {setClassMetadata} from './render3/metadata';
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export {NgModuleFactory} from './render3/ng_module_ref';
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/**
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* The existence of this constant (in this particular file) informs the Angular compiler that the
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* current program is actually @angular/core, which needs to be compiled specially.
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*/
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export const ITS_JUST_ANGULAR = true;
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