[GitHub] [cordova-android] xqqy opened a new issue #796: proper content-type for JavaScript dynamic import

[GitBox <gi...@apache.org>]

xqqy opened a new issue #796: proper content-type for JavaScript dynamic import
URL: https://github.com/apache/cordova-android/issues/796
 
 
   # Bug Report
   
   ## Problem
   JavaScript [dynamic import](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Statements/import) would not work. Because when load .js file,it didn't have a  proper content-type. 
   
   ### What is expected to happen?
   Behave as what in a normal browser. 
   
   
   ### What does actually happen?
   Webview will catch a error "{message:Failed to fetch dynamically imported module:<the .js file name>,stack:TypeError:Failed to fetch dynamically imported module:<the .js file name>,}".
   Which I thought it is because it didn't have a proper HTTP content-type inside.
   
   
   ## Information
   <!-- Include all relevant information that might help understand and reproduce the problem -->
   It will catch a error:
   message: "Failed to fetch dynamically imported module: file:///android_asset/www/js/module/U0_0.js"
   stack: "TypeError: Failed to fetch dynamically imported module: file:///android_asset/www/js/module/U0_0.js"
   __proto__: Object
   constructor: function()
   message: ""
   name: "TypeError"
   toString: function()
   __proto__: Object
   constructor: function()
   message: ""
   name: "Error"
   toString: function()
   __proto__: Object
   __defineGetter__: function()
   __defineSetter__: function()
   __lookupGetter__: function()
   __lookupSetter__: function()
   __proto__: null
   constructor: function()
   hasOwnProperty: function()
   isPrototypeOf: function()
   propertyIsEnumerable: function()
   toLocaleString: function()
   toString: function()
   valueOf: function()
   __proto__: null
   
   
   To reproduce the problem in my [project](https://www.gitlab.com/acted/h2):
   click "开始游戏"-"进入关卡"(it will stuck here due to it can't load javascript file)
   ### Command or Code
   <!-- What command or code is needed to reproduce the problem? -->
   My project are in [https://www.gitlab.com/acted/h2]( https://www.gitlab.com/acted/h2
   )
   In file 'www/js/plus.js' function 'clsup' line125
   
   code of dynamic import which caused a error:
   `        import('./module/'+node+'.js')
               .then(module => {
                   module.clsup_e();//由该模块进行渲染
               })
               .catch(err => {
                   console.error(err);
                   dialogAlert("动态加载失败，请升级浏览器。推荐电脑使用Firefox，手机使用MS edge");
               });
   `
   
   ### Environment, Platform, Device
   <!-- In what environment, on what platform or on which device are you experiencing the issue? -->
   System :Android9
   WebView:Chrome 75.0.3770.101
   devices:MI4C with mokee 90.0-libra-201907290826-NIGHTLY
   
   
   ### Version information
   <!-- 
   What are relevant versions you are using?
   For example:
   Cordova: Cordova CLI, Cordova Platforms, Cordova Plugins 
   Other Frameworks: Ionic Framework and CLI version
   Operating System, Android Studio, Xcode etc.
   -->
   cordova-lib@9.0.1 with:
     cordova-common@3.2.0
     cordova-create@2.0.0
     cordova-fetch@2.0.1
     cordova-serve@3.0.0
   
   Environment: 
     OS: linux
     Node: v12.7.0
     npm: 6.10.0
   
   Plugins:
     cordova-plugin-dialogs
     cordova-plugin-whitelist
   
   Android platform:
     ERROR: android: Command failed with exit code ENOENT
   
   
   ## Checklist
   <!-- Please check the boxes by putting an x in the [ ] like so: [x] -->
   
   - [ x] I searched for existing GitHub issues
   - [ x] I updated all Cordova tooling to most recent version
   - [ x] I included all the necessary information above
   

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