/** @module array/append.ts */
import { Append, ValueOf } from '../helper-types';
interface IAppend<B> {
    <A extends [any, ...any[]]>(arr: A): Append<A, B>;
    <A extends any[]>(arr: A): Array<ValueOf<A> | B>;
}
export declare function append<B, A extends [any, ...any[]]>(item: B, arr: A): Append<A, B>;
export declare function append<B, A extends any[]>(item: B, arr: A): Array<ValueOf<A> | B>;
export declare function append<B extends Array<unknown>>(item: B): IAppend<B>;
export declare function append(item: string, arr: string): string;
export declare function append(item: string): (arr: string) => string;
export default append;