export declare function concatArrays(...args: Uint8Array[]): Uint8Array;
/**
 * Create chunk from an array
 * @param input data to split
 * @param chunkSize chunk size (>= 1)
 */
export declare function chunkArray<T>(input: T[], chunkSize: number): T[][];
export declare function uniqFilter<T>(value: T, index: number, self: T[]): boolean;