webpack.config.js

const path = require('path');
const webpack = require('webpack');

module.exports = {
  context: path.resolve(__dirname, 'src'),
  entry: {
    app: './app.jsx',
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].bundle.js',
    publicPath: '/assets'
  },
  devServer: {
    contentBase: path.resolve(__dirname, 'src')
  },resolve: {
    extensions: ['.js', '.jsx']
  },
  module: {
    rules: [
      {
        test: /.jsx?$/,
        exclude: /node_modules/,
        include: path.join(__dirname, 'src'),
        use: [
          {
            loader: 'babel-loader',
            options: {
              babelrc: false,
              presets: [
                ['es2015', { modules: false }],
                'react',
              ]
            }
          }
        ]
      },
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
};