| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | /// <amd-module name="@angular/compiler-cli/src/transformers/downlevel_decorators_transform" />
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| 9 | import * as ts from 'typescript';
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| 10 | import { ReflectionHost } from '../ngtsc/reflection';
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| 11 | /**
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| 12 | * Gets a transformer for downleveling Angular decorators.
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| 13 | * @param typeChecker Reference to the program's type checker.
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| 14 | * @param host Reflection host that is used for determining decorators.
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| 15 | * @param diagnostics List which will be populated with diagnostics if any.
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| 16 | * @param isCore Whether the current TypeScript program is for the `@angular/core` package.
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| 17 | * @param isClosureCompilerEnabled Whether closure annotations need to be added where needed.
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| 18 | * @param skipClassDecorators Whether class decorators should be skipped from downleveling.
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| 19 | * This is useful for JIT mode where class decorators should be preserved as they could rely
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| 20 | * on immediate execution. e.g. downleveling `@Injectable` means that the injectable factory
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| 21 | * is not created, and injecting the token will not work. If this decorator would not be
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| 22 | * downleveled, the `Injectable` decorator will execute immediately on file load, and
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| 23 | * Angular will generate the corresponding injectable factory.
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| 24 | */
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| 25 | export declare function getDownlevelDecoratorsTransform(typeChecker: ts.TypeChecker, host: ReflectionHost, diagnostics: ts.Diagnostic[], isCore: boolean, isClosureCompilerEnabled: boolean, skipClassDecorators: boolean): ts.TransformerFactory<ts.SourceFile>;
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