export declare class ArrayUtilities {
    /**
     * Creates a array of arrays of length no bigger then provided number.
     * @param arr Original array that needs to be splitted.
     * @param length Max length of sub arrays to be returned.
     * @returns
     */
    static splitToMaxLength<T>(arr: T[], length: number): T[][];
    /**
     * Returns a new Map which represents a subset of Map elements with provided keys.
     * @param map Original Map that needs to be filtered.
     * @param keys Keys to filter by.
     * @returns
     */
    static getSubMap<T, U>(map: Map<T, U>, keys: T[]): Map<T, U>;
}