import { ExpressionOperator } from "../../../core";
/**
 * Searches an array for an occurrence of a specified value and returns the array index of the first occurrence.
 * If the substring is not found, returns -1.
 *
 * @param  {AnyObject} obj
 * @param  {*} expr
 * @return {*}
 */
export declare const $indexOfArray: ExpressionOperator;
