import { Functions } from './Functions';
export declare namespace Arrays {
    function deleteItem<T>(arr: T[], item: T): boolean;
    function pushAll<T>(dst: T[], src: T[]): T[];
    function shuffle<T>(arr: T[]): T[];
    function haveIntersection<T>(array1: T[], array2: T[]): boolean;
    function filterUntil<T>(arr: T[], filter: Functions.Filter<T>, includeLast?: boolean): T[];
    function getFirst<T>(itemOrArray: T | T[]): T | undefined;
}