webpack.config.js

const webpack = require('webpack')
const merge = require('webpack-merge')
const path = require('path')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')

const common = {
  entry: './src/index.js',
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'app.[hash].js'
  },
  resolve: {
    extensions: ['.js', '.jsx'],
    alias: {
      '../../theme.config$': path.join(__dirname, 'src/style/theme.config')
    }
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['react', 'env'],
          plugins: [
            'transform-object-rest-spread',
            'transform-class-properties'
          ]
        }
      },
      {
        test: /\.less$/,
        use: ExtractTextPlugin.extract({
          use: ['css-loader', 'less-loader'],
          fallback: 'style-loader'
        })
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          { loader: 'css-loader' }
        ]
      },
      {
        test: /\.jpe?g$|\.gif$|\.ico$|\.png$|\.svg$/,
        loader: 'file-loader',
        options: { name: '[name].[ext]?[hash]' }
      },
      {
        test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          mimetype: 'application/font-woff'
        }
      },
      {
        test: /\.(ttf|eot)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        loader: 'file-loader'
      },
      {
        test: /\.otf(\?.*)?$/,
        loader: 'file-loader',
        options: {
          name: '/fonts/[name].[ext]',
          mimetype: 'application/font-otf'
        }
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      filename: 'index.html'
    }),
    new ExtractTextPlugin('[name].[hash].css'),
    new CopyWebpackPlugin([{ from: 'assets', to: '.' }])
  ]
}

const dev = {
  devtool: 'eval',
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development')
    })
  ]
}

const prod = {
  devtool: 'source-map',
  plugins: [
    new webpack.optimize.UglifyJsPlugin({
      extractComments: true,
      sourceMap: true
    }),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production')
    })
  ]
}

switch (process.env.NODE_ENV) {
  case 'production':
    module.exports = merge(common, prod)
    break
  case 'development':
    module.exports = merge(common, dev)
    break
  default:
    module.exports = merge(common, dev)
}