angular-cn/packages/compiler/src/ng_module_resolver.ts
Tobias Bosch 0cc77b4a69 refactor(compiler): split compiler and core (#18683)
After this, neither @angular/compiler nor @angular/comnpiler-cli depend
on @angular/core.

This add a duplication of some interfaces and enums which is stored
in @angular/compiler/src/core.ts

BREAKING CHANGE:
- `@angular/platform-server` now additionally depends on
  `@angular/platform-browser-dynamic` as a peer dependency.


PR Close #18683
2017-08-16 17:58:53 -05:00

37 lines
1022 B
TypeScript

/**
* @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
*/
import {CompileReflector} from './compile_reflector';
import {NgModule, Type, createNgModule} from './core';
import {findLast} from './directive_resolver';
import {stringify} from './util';
/**
* Resolves types to {@link NgModule}.
*/
export class NgModuleResolver {
constructor(private _reflector: CompileReflector) {}
isNgModule(type: any) { return this._reflector.annotations(type).some(createNgModule.isTypeOf); }
resolve(type: Type, throwIfNotFound = true): NgModule|null {
const ngModuleMeta: NgModule =
findLast(this._reflector.annotations(type), createNgModule.isTypeOf);
if (ngModuleMeta) {
return ngModuleMeta;
} else {
if (throwIfNotFound) {
throw new Error(`No NgModule metadata found for '${stringify(type)}'.`);
}
return null;
}
}
}