/**
 * @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
 */
/** @docs-private */
export declare function getMatFormFieldPlaceholderConflictError(): Error;
/** @docs-private */
export declare function getMatFormFieldDuplicatedHintError(align: string): Error;
/** @docs-private */
export declare function getMatFormFieldMissingControlError(): Error;
