mpvue小程序启动报错:"Cannot read property 'platform' of undefined"

mpvue小程序启动时没有platform，因为mpvue-loading版本问题
简书地址

错误：

$ yarn dev
yarn run v1.19.1
$ node build/dev-server.js
/Users/mahaiqiang/git/redcreation/customplatform/customApplet/node_modules/mpvue-template-compiler/build.js:5812
    switch(fileExt.platform) {
                   ^

TypeError: Cannot read property 'platform' of undefined
    at Object.compileToWxml (/Users/mahaiqiang/git/redcreation/customplatform/customApplet/node_modules/mpvue-template-compiler/build.js:5812:20)
    at genComponentWxml (/Users/mahaiqiang/git/redcreation/customplatform/customApplet/node_modules/mpvue-loader/lib/mp-compiler/index.js:45:75)
    at Timeout.createWxml [as _onTimeout] (/Users/mahaiqiang/git/redcreation/customplatform/customApplet/node_modules/mpvue-loader/lib/mp-compiler/index.js:92:19)
    at listOnTimeout (timers.js:329:17)
    at processTimers (timers.js:271:5)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

依赖版本：

"mpvue-entry": "^1.4.7",
"mpvue-loader": "1.2.2",
"mpvue-template-compiler": "^1.0.11",
"mpvue-webpack-target": "^1.0.0",

node版本

$ node -v    
v11.10.1

解决

参考方案：

1. https://github.com/Meituan-Dianping/mpvue/issues/1371
2. https://github.com/F-loat/mpvue-quickstart/commit/eb4ac7ec8ba7d4dc4742e3f9e382b1762144cd53

修改

• 升级mpvue版本

  "mpvue-loader": "1.2.2"
  

• 修改vue-loader.conf.js
  module.exports增加以下配置

  fileExt: {
    template: 'wxml',
    script: 'js',
    style: 'wxss',
    platform: 'wx'
  }
  

• 修改webpack.base.conf.js

  //options: { checkMPEntry: true }
  // 替换为
  options: Object.assign({ checkMPEntry: true }, vueLoaderConfig)