/**
 * This file is part of the drip-table project.
 * @link     : https://drip-table.jd.com/
 * @author   : Emil Zhai (root@derzh.com)
 * @modifier : Emil Zhai (root@derzh.com)
 * @copyright: Copyright (c) 2021 JD Network Technology Co., Ltd.
 */
declare type ChildrenLike<T extends ChildrenLike<T>> = {
    children?: readonly T[] | void;
} | object;
export declare const forEachRecursive: <T extends ChildrenLike<T>>(columns: readonly T[], callbackfn: (column: T, index: number) => void) => void;
export declare const flattenRecursive: <T extends ChildrenLike<T>>(columns: readonly T[]) => readonly T[];
export declare const mapRecursive: <T extends ChildrenLike<T>>(columns: readonly T[], callbackfn: (column: T, index: number) => T) => readonly T[];
export declare const filterRecursive: <T extends ChildrenLike<T>>(columns: readonly T[], callbackfn: (column: T, index: number) => unknown) => readonly T[];
export declare const findRecursive: <T extends ChildrenLike<T>>(columns: readonly T[], callbackfn: (column: T, index: number) => unknown) => T | undefined;
export declare const findIndexRecursive: <T extends ChildrenLike<T>>(columns: readonly T[], callbackfn: (column: T, index: number) => unknown) => number;
export {};