webpack.config.js

var path = require('path')
var webpack = require('webpack')
const VueLoaderPlugin = require('vue-loader/lib/plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin')

const isProd = process.env.NODE_ENV === 'production'
const isDeploy = process.env.ENV_CONFIG === 'deploy'

let externals = {}

if (isProd) {
  externals = {
    'vue': {
      root: 'Vue',
      commonjs: 'vue',
      commonjs2: 'vue',
      amd: 'vue'
    },
    'element-ui/lib/table': 'element-ui/lib/table',
    'element-ui/lib/table-column': 'element-ui/lib/table-column'
  }
}

module.exports = {
  mode: process.env.NODE_ENV,
  entry: (isProd && !isDeploy) ? './src/index.js' : './src/main.js',
  output: {
    path: isDeploy ? path.resolve(__dirname, './dist') : path.resolve(__dirname, './lib'),
    publicPath: isDeploy ? '/dist/' : '/lib/',
    filename: 'index.js',
    library: 'mgtable',
    libraryTarget: 'umd',
    umdNamedDefine: true
  },
  externals,
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          'vue-style-loader',
          'css-loader'
        ],
      },      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
          }
          // other vue-loader options go here
        }
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          limit: 10000,
          name: path.posix.join('static', '[name].[hash:7].[ext]')
        }
      },
      {
        test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
        loader: 'url-loader',
        query: {
          limit: 10000,
          name: path.posix.join('static', '[name].[hash:7].[ext]')
        }
      }
    ]
  },
  plugins: [new VueLoaderPlugin()],
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue.esm.js',
      '@': path.join(__dirname, '..', 'src')
    },
    extensions: ['*', '.js', '.vue', '.json']
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true,
    overlay: true
  },
  performance: {
    hints: false
  },
  devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])

  module.exports.optimization = {
    minimizer: [
      new UglifyJsPlugin({
        uglifyOptions: {
          mangle: {
            safari10: true
          }
        },
        sourceMap: false,
        cache: true,
        parallel: true
      }),
      // Compress extracted CSS. We are using this plugin so that possible
      // duplicated CSS from different components can be deduped.
      new OptimizeCSSAssetsPlugin()
    ]
  }
}