javascript - 使用vue-cli开发的网站，源码全都暴露在浏览器中？

webpack原来把js打包压缩混淆源码的优势呢？

是我使用的姿势不对吗？

望指教~~~

------------update-------

这是build的源码。。。

-----------update--------

已将config/index.js下的productionSourceMap设为false了。

build: {
    env: require('./prod.env'),
    index: path.resolve(__dirname, '../dist/index.html'),
    assetsRoot: path.resolve(__dirname, '../dist'),
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    productionSourceMap: false,
    // Gzip off by default as many popular static hosts such as
    // Surge or Netlify already gzip all static assets for you.
    // Before setting to `true`, make sure to:
    // npm install --save-dev compression-webpack-plugin
    productionGzip: false,
    productionGzipExtensions: ['js', 'css']
  },