/** * @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 */ /// <amd-module name="@angular/compiler-cli/src/transformers/downlevel_decorators_transform" /> import * as ts from 'typescript'; import { ReflectionHost } from '../ngtsc/reflection'; /** * Gets a transformer for downleveling Angular decorators. * @param typeChecker Reference to the program's type checker. * @param host Reflection host that is used for determining decorators. * @param diagnostics List which will be populated with diagnostics if any. * @param isCore Whether the current TypeScript program is for the `@angular/core` package. * @param isClosureCompilerEnabled Whether closure annotations need to be added where needed. * @param skipClassDecorators Whether class decorators should be skipped from downleveling. * This is useful for JIT mode where class decorators should be preserved as they could rely * on immediate execution. e.g. downleveling `@Injectable` means that the injectable factory * is not created, and injecting the token will not work. If this decorator would not be * downleveled, the `Injectable` decorator will execute immediately on file load, and * Angular will generate the corresponding injectable factory. */ export declare function getDownlevelDecoratorsTransform(typeChecker: ts.TypeChecker, host: ReflectionHost, diagnostics: ts.Diagnostic[], isCore: boolean, isClosureCompilerEnabled: boolean, skipClassDecorators: boolean): ts.TransformerFactory<ts.SourceFile>;