webpack.config.js

const path = require('path');
const HTMLWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const GitRevisionPlugin = require('git-revision-webpack-plugin');

module.exports = {
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js',
  },
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.s?css$/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ['file-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.js', '.jsx'],
  },
  plugins: [
    new webpack.DefinePlugin({
      GIT_VERSION: JSON.stringify(new GitRevisionPlugin().version()),
    }),
    new HTMLWebpackPlugin({
      template: 'src/index.html',
      filename: 'index.html',
    }),
  ],
};