webpack.config.js

const path = require('path');

module.exports = {
  entry: {
    app: './src/index.js',
  },
  devtool: 'inline-source-map',
  output: {
    path: path.resolve(__dirname, './dist'),
    filename: 'index.js',
    publicPath: '/',
  },
  module: {
    rules: [
      {
        test: /^(?!.*?\.module).*\.css$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.module\.css$/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              modules: true,
              localIdentName: "[name]_[local]_[hash:base64]",
              sourceMap: true,
            },
          },
        ],
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
    ],
  },
  plugins: [
  ],
};