npm run build:service:legacy

packages/uni-app-plus-nvue/dist/service.legacy.js

@@ -192,6 +192,8 @@ function initSubNVue (nvue, plus, BroadcastChannel) {
   let origin;
 
   const onMessageCallbacks = [];
+
+  const postMessage = nvue.requireModule('plus').postMessage;
 
   const onSubNVueMessage = function onSubNVueMessage (data) {
     onMessageCallbacks.forEach(callback => callback({
@@ -231,7 +233,7 @@ function initSubNVue (nvue, plus, BroadcastChannel) {
           to: isPopupNVue ? hostNVueId : popupNVueId
         });
       } else {
-        plus.postMessage({
+        postMessage({
           type: 'UniAppSubNVue',
           data: data
         }, UNIAPP_SERVICE_NVUE_ID);

src/platforms/app-plus-nvue/services/api/sub-nvue.js

@@ -8,7 +8,7 @@ export function initSubNVue (nvue, plus, BroadcastChannel) {
   const onMessageCallbacks = []
 
   const postMessage = nvue.requireModule('plus').postMessage
-  
+
   const onSubNVueMessage = function onSubNVueMessage (data) {
     onMessageCallbacks.forEach(callback => callback({
       origin,