| /** |
| * @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 { InjectionToken } from '@angular/core'; |
| /** |
| * Injection token that can be used to reference instances of `MatError`. It serves as |
| * alternative token to the actual `MatError` class which could cause unnecessary |
| * retention of the class and its directive metadata. |
| */ |
| export declare const MAT_ERROR: InjectionToken<MatError>; |
| /** Single error message to be shown underneath the form field. */ |
| export declare class MatError { |
| id: string; |
| } |
