/**
 * @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
 */
import * as o from '../output/output_ast';
export declare type CompileClassMetadataFn = (metadata: R3ClassMetadata) => o.Expression;
/**
 * Metadata of a class which captures the original Angular decorators of a class. The original
 * decorators are preserved in the generated code to allow TestBed APIs to recompile the class
 * using the original decorator with a set of overrides applied.
 */
export interface R3ClassMetadata {
    /**
     * The class type for which the metadata is captured.
     */
    type: o.Expression;
    /**
     * An expression representing the Angular decorators that were applied on the class.
     */
    decorators: o.Expression;
    /**
     * An expression representing the Angular decorators applied to constructor parameters, or `null`
     * if there is no constructor.
     */
    ctorParameters: o.Expression | null;
    /**
     * An expression representing the Angular decorators that were applied on the properties of the
     * class, or `null` if no properties have decorators.
     */
    propDecorators: o.Expression | null;
}
export declare function compileClassMetadata(metadata: R3ClassMetadata): o.Expression;