测试

src/main.js

@@ -3,9 +3,10 @@ window.Vue=Vue
 import App from './App.vue'
 import ElementUI from 'element-ui'
 import 'element-ui/lib/theme-chalk/index.css'
-import './packages/index'
+import tt from './packages/index'
 Vue.config.productionTip = false
 Vue.use(ElementUI)
+Vue.use(tt)
 new Vue({
   render: h => h(App)
 }).$mount('#app')

src/packages/index.js

 import Vue from 'vue'
 const requireComponent_ = require.context('./', true, /index.vue$/)
-const obj={}
-requireComponent_.keys().forEach(fileName => {
-  const componentConfig = requireComponent_(fileName)
-  const { name } = componentConfig.default
-  if (name) {
-    Vue.component(name, componentConfig.default || componentConfig)
-    obj[name]=componentConfig
-  }
-})
+const obj = {}
+const install = function (Vue) {
+  if (install.installed) return;
+  requireComponent_.keys().forEach(fileName => {
+    const componentConfig = requireComponent_(fileName)
+    const { name } = componentConfig.default
+    if (name) {
+      Vue.component(name, componentConfig.default || componentConfig)
+      obj[name] = componentConfig
+    }
+  })
+};
+// if (typeof window !== 'undefined' && window.Vue || Vue) {
+//   install(window.Vue || Vue);
+// }
+// requireComponent_.keys().forEach(fileName => {
+//   const componentConfig = requireComponent_(fileName)
+//   const { name } = componentConfig.default
+//   if (name) {
+//     Vue.component(name, componentConfig.default || componentConfig)
+//     obj[name] = componentConfig
+//   }
+// })
+obj.install = install
 export default obj
\ No newline at end of file