/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Returns true if the object is contained in the array (compared with ===).
 * @template T
 */
export declare function contains<T>(array: T[], elem: T): boolean;
/**
 * Returns a shallow copy of the array or array-like object (e.g. arguments).
 * @template T
 */
export declare function clone<T>(arraylike: T[]): T[];
/**
 * Removes the given element from the given array, if it is contained.
 * Directly modifies the passed-in array.
 * @template T
 */
export declare function remove<T>(array: T[], elem: T): void;
