webpack.common.js

const path = require('path');
const webpack = require('webpack');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const autoprefixer = require('postcss-cssnext');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

const DIST_PATH = path.resolve(__dirname, 'dist');
const SOURCE_PATH = path.resolve(__dirname, 'src');

const HtmlWebpackPluginConfig = new HtmlWebpackPlugin({
  template: `${SOURCE_PATH}/index.html`,
  filename: 'index.html',
  inject: 'body',
});

module.exports = {
  entry: [
    `${SOURCE_PATH}/index.js`,
  ],
  output: {
    path: DIST_PATH,
    filename: 'bundle.js',
    publicPath: '/',
  },
  module: {
    rules: [
      { test: /\.js$/, loader: 'babel-loader', exclude: /node_modules/ },
      { test: /\.jsx$/, loader: 'babel-loader', exclude: /node_modules/ },
      {
        test: /\.scss$/,
        loader: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: ['css-loader', 'sass-loader'],
        }),
      },
      // Add only image extensions
      { test: /\.(png|jpeg|jpg|gif|svg)$/, use: ['file-loader'] },
      { test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: 'url?limit=10000&mimetype=image/svg+xml' },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(['dist']),
    HtmlWebpackPluginConfig,
    new ExtractTextPlugin('style.bundle.css'),
  ],
  resolve: {
    extensions: ['.js', '.jsx', '.json', '*'],
    modules: [
      path.join(__dirname, 'node_modules'),
    ],
  },
};