webpack.common.js

const path = require('path');
const webpack = require('webpack');
const HtmlWebPackPlugin = require("html-webpack-plugin");
const CleanWebpackPlugin = require('clean-webpack-plugin');

module.exports = {
  entry: './src/index.jsx',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    loaders: [
      {
        test: /\.(js|jsx)?$/,
        exclude: /node_modules/,
        loader: "babel-loader",
        query: {
          presets: ['es2015', 'react', 'stage-2']
        }
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader"
          }
        ]
      },
      {
         test: /\.css$/,
         use: [
           'style-loader',
           'css-loader'
        ]
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: [
          'file-loader'
        ]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(['dist']),
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "./index.html"
    })
  ],
  devServer: {
    contentBase: "./dist"
  }
};