webpack.config.js

var path = require('path')

module.exports = {
  entry: './app/index.js',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        test: /.js$/,
        exclude: ['/node_modules/'],
        include: path.join(__dirname, 'app'),
        use: [
          {
            loader: 'babel-loader',
            options: {
              babelrc: false,
              presets: [
                ['es2015', {modules: false}],
                'react'
              ]
            }
          }
        ]
      },
      {
        test: /\.(pcss|css)$/,
        use: [
          {
            loader: 'style-loader'
          },
          {
            loader: 'css-loader',
            options: {
              modules: true,
              sourceMap: true,
              importLoaders: 1,
              localIdentName: '[name]--[local]--[hash:base64:8]'
            }
          },
          {
            loader: 'postcss-loader',
            options: {
              config: './postcss.config.js'
            }
          }
        ]
      }
    ]
  }
}