webpack.common.js

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

module.exports = {
  entry: {
    app: './src/index.jsx'
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        loader: 'eslint-loader',
        enforce: 'pre'
      },
      {
        test: /\.(js|jsx)$/,
        loader: 'babel-loader'
      },
      {
        test: /\.(css|scss)$/,
        include: /node_modules/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader'
        ]
      },
      {
        test: /\.(css|scss)$/,
        exclude: /node_modules/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              modules: true
            }
          },
          'sass-loader'
        ]
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        loader: 'file-loader'
      }
    ]
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  plugins: [
    new CleanWebpackPlugin(['dist']),
    new HtmlWebpackPlugin({
      template: './src/index.html'
    })
  ]
};