webpack.config.js

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

module.exports = {
  entry: ['./src/index.js', './styles/main.scss'],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name].[chunkhash].js'
  },
  devServer: {
    inline: true,
    port: 3000
  },
  module: {
    rules: [
      {
        use: 'babel-loader',
        test: /\.js$/,
        exclude: /node_modules/
      },
      { // regular css files
        test: /\.css$/,
        loader: ExtractTextPlugin.extract({
          loader: 'css-loader?importLoaders=1',
        }),
      },
      { // sass / scss loader for webpack
        test: /\.(sass|scss)$/,
        loader: ExtractTextPlugin.extract(['css-loader', 'sass-loader'])
      },
      {
        test: /\.eot/,
        loader: 'url-loader?mimetype=application/vnd.ms-fontobject'
      },
      // Compact files
      { test: /\.jpe?g$|\.gif$|\.png$|\.svg$|\.woff$|\.ttf$|\.wav$|\.mp3$/, loader: "file" }
    ]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production')
    }),
    new webpack.optimize.CommonsChunkPlugin({
      names: ['vendor', 'manifest']
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new ExtractTextPlugin({ // define where to save the file
      filename: 'styles/main.css',
      allChunks: true,
    }),
    new webpack.ProvidePlugin({
     $: "jquery",
     jQuery: "jquery"
    })
  ]
};