webpack.config.js

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

module.exports = {
  entry: './src/index.jsx',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js',
    publicPath: '/'
  },
  devtool: 'inline-source-map',
  devServer: {
    contentBase: './dist'
  },
  module: {
    loaders: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        query: {
          presets: ['env', 'react']
        }
      },
      {
        test: /\.s?css$/,
        loaders: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.(png|jpg|gif)$/,
        loader: 'file-loader'
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: './public/index.html'
    })
  ],
  resolve: {
    extensions: ['.js', '.jsx']
  }
};