export function mapRecursive(array: any, fn: any, childrenKey?: string): any;
export function flatRecursive(array: any, childrenKey?: string): any[];
export function countRecursive(array: any, childrenKey?: string): number;
export function filterRecursive(array: any, predicate: any, childrenKey?: string): any;
export function isUrl(str: any): boolean;
export function isMailProtocol(str: any): boolean;
export function isIconifyString(str: any): boolean;
export function matchPath(path: any): any;
export function matchPaths(paths?: any[]): number;
export function splitNavColumns(items: any, options?: {}): never[][];