import type { BinaryStream, OutputBinaryStream } from "node-opcua-binary-stream";
/**
 * @param arr     the array to encode.
 * @param stream  the stream.
 * @param encodeElementFunc   The  function to encode a single array element.
 */
export declare function encodeArray<T>(arr: T[] | null, stream: OutputBinaryStream, encodeElementFunc: (value: T, stream: OutputBinaryStream) => void): void;
/**
 * decode an array from a BinaryStream
 * @param stream  the stream.
 * @param decodeElementFunc   The  function to decode a single array element.
 *                            This function returns the element decoded from the stream
 * @returns an array of elements or null
 */
export declare function decodeArray<T>(stream: BinaryStream, decodeElementFunc: (stream: BinaryStream) => T): T[] | null;