javascript - Webpack UglifyJS 仍然发出警告消息

Question

A lot of warnings with webpack uglify

我已经关闭了 UglifyJS 中的警告，但我仍然收到来自 webpack 的一些警告。

WARNING in main-0.2.8.js from UglifyJs
Dropping unused variable e [./~/bluebird/js/browser/bluebird.js:29,292]
Dropping unused variable o [./~/bluebird/js/browser/bluebird.js:29,292]
Dropping unused variable i [./~/bluebird/js/browser/bluebird.js:29,292]
Non-strict equality against boolean: == false [./~/aurelia-pal-browser/dist/commonjs/aurelia-pal-browser.js:200,0]
Non-strict equality against boolean: == false [./~/aurelia-pal-browser/dist/commonjs/aurelia-pal-browser.js:208,0]

来自 webpack.config 的插件

  plugins: [
    new AureliaWebpackPlugin(),
    new HtmlWebpackPlugin({
      title: 'Aurelia webpack skeleton - ' + pkg.version,
      template: 'index.prod.html',
      filename: 'index.html'
    }),
    new ProvidePlugin({
      $: 'jquery',
      jquery: 'jquery',
      "windows.jquery": 'jquery'
    }),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      }
    })
  ]

如果有人知道如何消除最后几个警告，那就太好了。

Answer 1

当您最小化 UglifyJs 时，它会警告您它删除了未使用的变量，并更改了 !1 和 true 中的 false 值到 !0。这不是问题，只是减少文件长度。另请参阅Javascript minification why is false replaced with !1 and true with !0 。但是，您可以尝试指定压缩选项来删除这些警告:

    compress: {
        warnings: false,
        booleans: false,
        unused: false
    }

有关详细信息，请参阅 https://github.com/mishoo/UglifyJS2#compressor-options 。我希望它有帮助。