text: import { asyncRouterMap, constantRouterMap } from '@/router'
  
  /**
   * 通过meta.role判断是否与当前用户权限匹配
   * @param menus
   * @param route
   */
  function hasPermission(menus, route) {
    if (route.meta && route.meta.code) {
      return menus.has(route.meta.code)
    } else {
      return true
    }
  }
  
  /**
   * 递归过滤异步路由表，返回符合用户角色权限的路由表
   * @param asyncRouterMap
   * @param menus
   */
  function filterAsyncRouter(asyncRouterMap, menus) {
    const accessedRouters = asyncRouterMap.filter(route => {
      if (hasPermission(menus, route)) {
        if (route.children && route.children.length) {
          route.children = filterAsyncRouter(route.children, menus)
        }
        return true
      }
      return false
    })
    return accessedRouters
  }
  
  const permission = {
    state: {
      routers: constantRouterMap,
      addRouters: []
    },
    mutations: {
      SET_ROUTERS: (state, routers) => {
        state.addRouters = routers
        state.routers = constantRouterMap.concat(routers)
      }
    },
    actions: {
      GenerateRoutes({ commit }, menus) {
        return new Promise(resolve => {
          const accessedRouters = filterAsyncRouter(asyncRouterMap, menus)
          commit('SET_ROUTERS', accessedRouters)
          resolve()
        })
      }
    }
  }
  
  export default permission
  