/**
 * @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
 */
/**
 * Returns an exception to be thrown when attempting to change a select's `multiple` option
 * after initialization.
 * @docs-private
 */
export declare function getMatSelectDynamicMultipleError(): Error;
/**
 * Returns an exception to be thrown when attempting to assign a non-array value to a select
 * in `multiple` mode. Note that `undefined` and `null` are still valid values to allow for
 * resetting the value.
 * @docs-private
 */
export declare function getMatSelectNonArrayValueError(): Error;
/**
 * Returns an exception to be thrown when assigning a non-function value to the comparator
 * used to determine if a value corresponds to an option. Note that whether the function
 * actually takes two values and returns a boolean is not checked.
 */
export declare function getMatSelectNonFunctionValueError(): Error;