fix(mp-jd): mpInstance.triggerEvent

packages/vue-cli-plugin-uni/packages/mp-vue/dist/mp.runtime.esm.js

@@ -5827,7 +5827,7 @@ function internalMixin(Vue) {
 
   Vue.prototype.$emit = function(event) {
     if (this.$scope && event) {
-      this.$scope['triggerEvent'](event, {
+      (this.$scope['_triggerEvent'] || this.$scope['triggerEvent'])(event, {
         __args__: toArray(arguments, 1)
       });
     }

src/platforms/mp-weixin/runtime/index.js

@@ -14,9 +14,15 @@ const customize = cached((str) => {
 
 function initTriggerEvent (mpInstance) {
   const oldTriggerEvent = mpInstance.triggerEvent
-  mpInstance.triggerEvent = function (event, ...args) {
+  const newTriggerEvent = function (event, ...args) {
     return oldTriggerEvent.apply(mpInstance, [customize(event), ...args])
   }
+  try {
+    // 京东小程序 triggerEvent 为只读
+    mpInstance.triggerEvent = newTriggerEvent
+  } catch (error) {
+    mpInstance._triggerEvent = newTriggerEvent
+  }
 }
 
 function initHook (name, options, isComponent) {