recursively.js

/**
 * Recursively flatten the data
 * [{path:string},{path:string}] => {path,path2}
 * @param  menus
 */
export const getFlatMenuKeys = (menuData: MenuDataItem[] = []): string[] => {
  let keys: string[] = [];
  menuData.forEach(item => {
    if (!item) {
      return;
    }
    keys.push(item.path);
    if (item.children) {
      keys = keys.concat(getFlatMenuKeys(item.children));
    }
  });
  return keys;
};