fix: platform.js

src/platforms/app-plus/view/bridge.js

 import {
   APP_SERVICE_ID
 } from '../constants'
-
-function plusReady (callback) {
-  if (!callback) {
-    return
-  }
-  if (window.plus) {
-    return callback()
-  }
-  document.addEventListener('plusready', callback)
-}
+import {
+  plusReady
+} from 'uni-shared'
 
 export function publishHandler (event, args = {}) {
   plusReady(function () {
@@ -27,4 +20,4 @@ export function publishHandler (event, args = {}) {
       }
     }, APP_SERVICE_ID)
   })
-}
+}

src/shared/platform.js

+export function plusReady (callback) {
+  if (typeof callback !== 'function') {
+    return
+  }
+  if (window.plus) {
+    return callback()
+  }
+  document.addEventListener('plusready', callback)
+}