webpack.config.js

const path = require('path');
const Dotenv = require('dotenv-webpack');

module.exports = {
  plugins: [new Dotenv()],
  entry: path.resolve(__dirname, './client/index.js'),
  output: {
    path: path.resolve(__dirname, './build'),
    filename: 'bundle.js',
  },
  mode: process.env.NODE_ENV,
  devServer: {
    publicPath: '/build',
    contentBase: path.resolve(__dirname, './client'),
    proxy: {
      '/api': 'http://localhost:3001',
      '/login': 'http://localhost:3001',
    },
  },
  module: {
    rules: [
      {
        test: /.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
          },
        },
      },
      {
        test: /.(css|scss)$/,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        type: 'asset/resource',
      },
    ],
  },
};