如何递归生成路由

// 路由格式转换函数
function transform2RouteConfigure(route) {
  if(!route.children || !route.children.length) {
    return {
      ...route,
      component: () => import('@/views'),
      children: []
    };
  }
 
  const children = route.children
    .filter(item => {
      let permission = item.meta[permissionColumn];
      return !permission || app.$store.state.user.authority.hasOwnProperty(permission) && app.$store.state.user.authority[permission] == true
    }).map(item => transform2RouteConfigure(item));
 
  const game = app.$store.state.base.righttop.find(item => item.lefturl === route.lefturl).value;
 
  return {
    ...route,
    component: Layout,
    children,
    path: `/${game}${route.path}`
  }
}