/**
 * @ignore
 */
interface Iteratee<K, V, C> {
    (value?: V, index?: K, collection?: C): any;
}
/**
 * This method is like `flatMap` except that it recursively flattens the
 * mapped results.
 *
 * @since 5.4.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new flattened array.
 * @see [[flatMap]],[[flatMapDepth]],[[flatten]],[[flattenDeep]],[[flattenDepth]],[[map]],[[mapKeys]],[[mapValues]]
 * @example
 *
 * ```js
 * function duplicate(n) {
 *   return [[[n, n]]]
 * }
 *
 * flatMapDeep([1, 2], duplicate)
 * // => [1, 1, 2, 2]
 * ```
 */
export declare function flatMapDeep<T, R = any>(collection: Array<T>, iteratee?: Iteratee<number, T, Array<T>>): Array<R>;
export declare function flatMapDeep<T, R = any>(collection: Record<string, T>, iteratee?: Iteratee<string, T, Record<string, T>>): Array<R>;
export default flatMapDeep;