webpack.config.js

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const OptimizeJsPlugin = require('optimize-js-plugin');
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const path = require('path');
// var CompressionPlugin = require('compression-webpack-plugin');
const env = process.env.NODE_ENV || 'development';

const plugins = [
  new HtmlWebpackPlugin({
    template: './public/index.ejs',
    filename: 'index.html',
    inject: 'body'
  })
  // new BundleAnalyzerPlugin()
];

if (env == 'production') {
  plugins.push(
    new webpack.optimize.UglifyJsPlugin(),
    new OptimizeJsPlugin({
      sourceMap: false
    }),
    new webpack.ContextReplacementPlugin(/moment[/\\]locale$/, /pl|en/),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production')
    })
  );
}

module.exports = {
  devtool: 'source-map',
  entry: ['react-hot-loader/patch', './src/index.js'],
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'app.bundle.js',
    publicPath: '/'
  },
  resolve: {
    extensions: ['.js', '.jsx'],
    alias: {
      Src: path.resolve(__dirname, 'src/')
    },
    modules: ['node_modules', 'src']
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /(node_modules|dist)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [
              require.resolve('babel-preset-react'),
              [
                require.resolve('babel-preset-env'),
                {
                  modules: false
                }
              ],
              require.resolve('babel-preset-stage-0')
            ],
            plugins: ['transform-decorators-legacy'],
            compact: true
          }
        }
      },
      {
        test: /\.(png|jpe?g|svg|gif)(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url-loader?limit=50000&name=./public/img/[name].[ext]'
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader', 'sass-loader?sourceMap']
      },
      {
        test: /(\.css$)/,
        use: [
          {
            loader: 'style-loader'
          },
          {
            loader: 'css-loader'
          }
        ]
      },
      {
        test: /\.js$/,
        exclude: /dist/,
        use: ['source-map-loader'],
        enforce: 'pre'
      }
    ]
  },
  plugins: plugins,
  devServer: {
    historyApiFallback: {
      index: '/'
    }
  },
  externals: {
    Config: JSON.stringify(
      process.env.NODE_ENV === 'production'
        ? {
          serverUrl: 'https://dcmt-billennium-webapi.azurewebsites.net',
          azureAdRedirectUri: 'https://dcmt-billennium.azurewebsites.net/signin-oidc'
        }
        : {
          // serverUrl: 'http://localhost:63383',
          serverUrl: 'https://dcmt-billennium-webapi-dev.azurewebsites.net',

          // azureAdRedirectUri: 'http://localhost:8080/signin-oidc'
          azureAdRedirectUri: 'http://localhost:8080/signin-oidc'
        }
    )
  }
};