import { ExpressionOperator } from "../../../core";
/**
 * Merge two lists together.
 *
 * Transposes an array of input arrays so that the first element of the output array would be an array containing,
 * the first element of the first input array, the first element of the second input array, etc.
 *
 * @param  {Obj} obj
 * @param  {*} expr
 * @return {*}
 */
export declare const $zip: ExpressionOperator;
