webpack.config.js

'use strict';
const path = require('path');
const webpack = require('webpack');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');
require('dotenv').config();

module.exports = {
  entry: ['./client/index.js'],
  output: {
    path: path.resolve(__dirname, 'public'),
    filename: 'bundle.js',
    publicPath: '/',
  },
  mode: 'development',
  plugins: [
    new webpack.ProvidePlugin({
      Buffer: ['buffer', 'Buffer'],
    }),
    new webpack.ProvidePlugin({
      process: 'process/browser.js',
    }),
    new NodePolyfillPlugin(),
  ],
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(js|jsx|ts|tsx|png)$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-react'],
        },
      },
      {
        test: /\.css$/i,
        exclude: /node_modules/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
              modules: true,
            },
          },
        ],
        include: /\.module\.css$/,
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
        exclude: /\.module\.css$/,
      },
    ],
  },
};

/**
 * 
 * might need for making css modules work
 * 
 *   resolve: {
    extensions: ['', '.js', '.jsx', '.css'],
    modulesDirectories: ['node_modules'],
  },
 */