this.getOpenerEventChannel在小程序平台使用原生方法

src/core/runtime/wrapper/create-app.js

@@ -12,10 +12,15 @@ import {
 
 export default function createApp (vm) {
   Vue.prototype.getOpenerEventChannel = function () {
-    if (!this.__eventChannel__) {
-      this.__eventChannel__ = new EventChannel()
+    switch (__PLATFORM__) {
+      case 'mp-weixin':
+        return this.$scope.getOpenerEventChannel()
+      default :
+        if (!this.__eventChannel__) {
+          this.__eventChannel__ = new EventChannel()
+        }
+        return this.__eventChannel__
     }
-    return this.__eventChannel__
   }
   const callHook = Vue.prototype.__call_hook
   Vue.prototype.__call_hook = function (hook, args) {
@@ -27,4 +32,4 @@ export default function createApp (vm) {
   }
   App(parseApp(vm))
   return vm
-}
+}