import type { Undefinable } from '../type';
export * from './utils';
/**
 * fp
 * const array = [1, 2, 3, 4, 5];
 * const result = moveArrayItem(array, 1, 3);
 * expect(result).toEqual([1, 3, 4, 2, 5]);
 * @param arr
 * @param from
 * @param to
 */
export declare const moveArrayItem: <T>(arr: T[], from: number, to: number) => T[];
/**
 * fp
 * const array = [1, 2, 3, 4, 5];
 * const result = swapArrayItem(array, 1, 3);
 * expect(result).toEqual([1, 4, 3, 2, 5]);
 * @param arr
 * @param source
 * @param target
 */
export declare const swapArrayItem: <T>(arr: T[], source: number, target: number) => T[];
export declare const randomIndex: (length: number) => number;
export declare const randomItem: <T>(arr: T[]) => T;
export declare const randomItems: <T>(arr: T[], count: number) => T[];
export declare const lastItem: <T>(arr: T[]) => Undefinable<T>;
export declare const firstItem: <T>(arr: T[]) => Undefinable<T>;
/**
 * fp
 * @param arr
 * @param index
 */
export declare const removeItemWithIndex: <T>(arr: T[], index: number) => T[];