fix(mp): wxs processEventArgs fixed #3829

src/core/runtime/wrapper/util.js

@@ -142,7 +142,7 @@ export function initData (vueOptions, context) {
     try {
       // 对 data 格式化
       data = JSON.parse(JSON.stringify(data))
-    } catch (e) {}
+    } catch (e) { }
   }
 
   if (!isPlainObject(data)) {
@@ -332,7 +332,7 @@ function wrapper (event) {
   // TODO 又得兼容 mpvue 的 mp 对象
   try {
     event.mp = JSON.parse(JSON.stringify(event))
-  } catch (e) {}
+  } catch (e) { }
 
   event.stopPropagation = noop
   event.preventDefault = noop
@@ -413,9 +413,11 @@ function getExtraValue (vm, dataPathsArray) {
   return context
 }
 
-function processEventExtra (vm, extra, event) {
+function processEventExtra (vm, extra, event, __args__) {
   const extraObj = {}
 
+  __args__ = event.detail.__args__ || __args__
+
   if (Array.isArray(extra) && extra.length) {
     /**
      *[
@@ -436,8 +438,8 @@ function processEventExtra (vm, extra, event) {
           if (dataPath === '$event') { // $event
             extraObj['$' + index] = event
           } else if (dataPath === 'arguments') {
-            if (event.detail && event.detail.__args__) {
-              extraObj['$' + index] = event.detail.__args__
+            if (event.detail && __args__) {
+              extraObj['$' + index] = __args__
             } else {
               extraObj['$' + index] = [event]
             }
@@ -467,6 +469,10 @@ function getObjByArray (arr) {
 
 function processEventArgs (vm, event, args = [], extra = [], isCustom, methodName) {
   let isCustomMPEvent = false // wxcomponent 组件，传递原始 event 对象
+
+  // fixed 用户直接触发 mpInstance.triggerEvent
+  const __args__ = event.detail.__args__ || [event.detail]
+
   if (isCustom) { // 自定义事件
     isCustomMPEvent = event.currentTarget &&
       event.currentTarget.dataset &&
@@ -475,11 +481,11 @@ function processEventArgs (vm, event, args = [], extra = [], isCustom, methodNam
       if (isCustomMPEvent) {
         return [event]
       }
-      return event.detail.__args__ || event.detail
+      return __args__
     }
   }
 
-  const extraObj = processEventExtra(vm, extra, event)
+  const extraObj = processEventExtra(vm, extra, event, __args__)
 
   const ret = []
   args.forEach(arg => {
@@ -488,7 +494,7 @@ function processEventArgs (vm, event, args = [], extra = [], isCustom, methodNam
         ret.push(event.target.value)
       } else {
         if (isCustom && !isCustomMPEvent) {
-          ret.push(event.detail.__args__[0])
+          ret.push(__args__[0])
         } else { // wxcomponent 组件或内置组件
           ret.push(event)
         }