test: use build/dist for e2e testing (#421)

* test: use build/dist for e2e testing

to prevent errors due to wrong build configs

* test: use wrong build conf to test the test

* test: exclude dist for babel-loader in test build

* chore: optimize more for ie9

prefer not to use language features which needs to be transpiled for ie9. Eg for..of to forEach and no spreads

* fix: continue

test/fixtures/basic/server.js

@@ -1,10 +1,14 @@
 import Vue from 'vue'
-import VueMeta from '../../../src'
+import { _import, getVueMetaPath } from '../../utils/build'
 import App from './App.vue'
 import createRouter from './router'
 
-Vue.use(VueMeta)
+export default async function createServerApp () {
+  const VueMeta = await _import(getVueMetaPath())
 
-App.router = createRouter()
+  Vue.use(VueMeta)
 
-export default new Vue(App)
+  App.router = createRouter()
+
+  return new Vue(App)
+}