Webpack Uglify CSS中的错误

Question

我强调试图让Uglify与我的项目合作，以前我使用过Uglify并没有给出问题，但现在我觉得这与SASS有关。

ERROR in ./~/css-loader!./~/sass-loader!./app/scss/global-header.scss
    Module build failed: TypeError: Cannot read property '4' of undefined
        at reduce (/Users/contractor/centralefcom-global-components/node_modules/postcss-reduce-transforms/dist/index.js:121:23)
        at walk (/Users/contractor/centralefcom-global-components/node_modules/postcss-value-parser/lib/walk.js:7:22)
        at ValueParser.walk (/Users/contractor/centralefcom-global-components/node_modules/postcss-value-parser/lib/index.js:18:5)
        at /Users/contractor/centralefcom-global-components/node_modules/postcss-reduce-transforms/dist/index.js:131:75
        at /Users/contractor/centralefcom-global-components/node_modules/postcss/lib/container.js:92:28
        at /Users/contractor/centralefcom-global-components/node_modules/postcss/lib/container.js:73:26
...
...

此错误重复多次，每个多个包一个。

这是我的webpack配置。

var webpack = require('webpack')
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var path = require('path');

module.exports = {
  context: __dirname,
  resolve: {
    modulesDirectories: ['node_modules', 'bower_components']
  },
  entry: {
    'all': [
      './app/global-all.js',
      './app/scss/global-all.scss'
    ],
    'footer': [
      './app/global-footer.js',
      './app/scss/global-footer.scss'
    ],
    'header': [
      './app/global-header.js',
      './app/scss/global-header.scss'
    ],
    'footer.nodeps': [
      './app/global-footer-nodeps.js',
      './app/scss/global-footer-nodeps.scss'
    ],
    'header.nodeps': [
      './app/global-header-nodeps.js',
      './app/scss/global-header-nodeps.scss'
    ],
  },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'js/global.[name].js',
  },
  module: {
    loaders: [
      {
        test: /\.scss$/,
        loader: ExtractTextPlugin.extract('style','css!sass!')
      },
      {
        test: /\.(woff|woff2|ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        loader: 'file?name=/assets/[name].[ext]'
      },
      {
        test: /\.(jpg|jpeg|png)$/,
        loader: 'file?name=/assets/[name].[ext]'
      }
    ],
  },
  plugins: [
    new webpack.EnvironmentPlugin([
      'NODE_ENV'
    ]),
    new ExtractTextPlugin('css/global.[name].css'),
    new HtmlWebpackPlugin({
      template: 'underscore-template-loader!./app/views/secondary.html',
      inject: false,
      filename: 'secondary.html'
    }),
        new HtmlWebpackPlugin({
      template: 'underscore-template-loader!./app/views/secondary-transparent.html',
      inject: false,
      filename: 'secondary-transparent.html'
    }),
    new HtmlWebpackPlugin({
      template: 'underscore-template-loader!./app/views/secondary-academy.html',
      inject: false,
      filename: 'secondary-academy.html'
    }),
    new HtmlWebpackPlugin({
      template: 'underscore-template-loader!./app/views/hero-stage.html',
      inject: false,
      filename: 'hero-stage.html'
    }),

    // Only minify in build, check npm tasks
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: false,
      mangle: false
    }),
    ]
};

如果我评论uglifyJsPlugin行，则没有错误。 但是我必须做缩小并且无法让它运行，我尝试了mangler：false而且没有，不起作用。

Answer 1

您正试图通过UglifyJs插件传递CSS文件，这是不受支持的。

要仅对您的JS源进行uglify，您可以根据文件扩展名进行过滤。

以下示例仅为Uglify具有.js或.jsx扩展名的文件：

new webpack.optimize.UglifyJsPlugin({
  sourceMap: false,
  mangle: false,
  test: /\.(js|jsx)$/
})

Answer 2

您将SCSS文件作为入口点的一部分。 在webpack中，更常见的做法是在JS文件中要求所需的文件（SCSS明智）。

// Here, the ExtractTextPlugin will use sass-loader to extract and compile styles
require('styles.scss');

// The rest of your code goes here
// For instance, app.js
function someCode() {
    document.body.style.backgroundColor = 'blue';
}

然后设置sass-loader来检测和处理您已经使用以下加载器完成的那些require语句。

{
    test: /\.scss$/,
    loader: ExtractTextPlugin.extract('style','css!sass!')
}