import { Predicate } from "./types";
/**
 * This method is like `find` except that it returns the key of the first
 * element `predicate` returns truthy for instead of the element itself.
 *
 * @since 5.2.0
 * @category Object
 * @param object The object to inspect.
 * @param predicate The function invoked per iteration.
 * @returns Returns the key of the matched element,
 *  else `undefined`.
 * @see [[find]], [[findIndex]], [[findLast]], [[findLastIndex]], [[findLastKey]]
 * @example
 *
 * ```js
 * const users = {
 *   'barney':  { 'age': 36, 'active': true },
 *   'fred':    { 'age': 40, 'active': false },
 *   'pebbles': { 'age': 1,  'active': true }
 * }
 *
 * findKey(users, ({ age }) => age < 40)
 * // => 'barney' (iteration order is not guaranteed)
 * ```
 */
export declare function findKey<V>(object: Record<string, V>, predicate?: Predicate<V>): string;
export declare function findKey(object: any, predicate?: Array<any>): string;
export declare function findKey(object: any, predicate?: string): string;
export default findKey;