/**
 * Copyright 2017-2020 Plexus Interop Deutsche Bank AG
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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.
 */
import { ExtendedMap } from './collections/ExtendedMap';
export declare class Arrays {
    static concatenateBuffers(...buffers: ArrayBuffer[]): ArrayBuffer;
    static toArrayBuffer(typedArray: Uint8Array): ArrayBuffer;
}
export declare function arrayBufferToString(buf: ArrayBuffer): string;
export declare function stringToArrayBuffer(str: string): ArrayBuffer;
export declare function concat<T>(x: T[], y: T[]): T[];
export declare function flatMap<T, R>(f: (el: T) => R[], array: T[]): R[];
export declare function join<T, R, Y>(first: T[], second: R[], joinFn: (x: T, y: R) => Y, predicate?: (x: T, y: R) => boolean): Y[];
export declare function distinct<T>(array: T[], key: (x: T) => any): T[];
export declare function toMap<T, K, V>(array: T[], keyFn: (v: T) => K, vFn: (v: T) => V): ExtendedMap<K, V>;