/** @module array/pluck.ts */
export declare function pluck<A, B extends keyof {
    [i in number]: any;
}>(key: B, arr: A[][]): Array<A | undefined>;
export declare function pluck<A, B extends keyof A>(key: B, arr: A[]): Array<A[B]>;
export declare function pluck<B extends number>(key: number): <A>(arr: A[][]) => Array<A | undefined>;
/**
 * Takes an key (or index) and an array of arrays or objects and returns
 * the selected key from each row
 * @example
 * pluck(1, [ [1,2,3], [4,5,6] ] )
 * //=> [2,5]
 * pluck('a',[ {a:1,b:2}, {a:3,b:4}])
 * // => [1,3]
 */
export declare function pluck<A extends string, B = [{
    [K in A]?: any;
}]>(keys: A): (arr: B) => B;
export default pluck;