Keep-alive multi-level routing cache problem in Vue

const modules = []
files.keys().forEach(key => {
    const filesObj = files(key).default || files(key)
    Object.keys(filesObj).forEach(keyOne => {
        modules.push(filesObj[keyOne])
    })
})

export const menuList = modules; // For menu display​
const routerList = formatTwoStageRoutes(formatFlatteningRoutes(modules)); // Flatten the routes into two-stage routes​
const router = new VueRouter({
    scrollBehavior: () => ({ y: 0 }),
    mode: 'history',
    base: process.env.BASE_URL,
    routes: routerList, //Use the flattened routes in the routing configuration items})

export const formatFlatteningRoutes = (routesList => {
  if (routesList.length <= 0) return routesList;
  let list = [];
  routesList.forEach(v => {
    if(v.path === '/') {
      // Used to add the initial layout and home page. Other center configurations filter out the layout and parent nodes, and only keep the routes in children list.push(v);
      list = list.concat(formatFlatteningRoutes(v.children))
    } else if (v.children && v.children.length > 0) {
      list = list.concat(formatFlatteningRoutes(v.children))
    } else {
      list.push(v);
    }
  })
  return list;
})
​
export const formatTwoStageRoutes = list => {
  if (list.length <= 0) return list;
  const routerList = [];
  list.forEach(v => {
    if (v.path === '/') {
      routerList.push({
        component: v.component,
        name: v.name,
        path: v.path,
        redirect: v.redirect,
        meta: v.meta,
        children: []
      })
    } else if (v.path === '/login' || v.path === '/showcasePage') {
      // Pages that do not require layout configuration routerList.push(v)
    } else {
      routerList[0].children.push({ ...v })
    }
  })
  return routerList;
}