webpack.config.js

/* eslint-disable @typescript-eslint/no-var-requires */
const path = require('path');
const Dotenv = require('dotenv-webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
    // Basic configuration
    entry: './src/index.tsx',
    // Necessary in order to use source maps and debug directly TypeScript files
    devtool: 'source-map',
    mode: 'development',
    performance: {
        maxAssetSize: 4000000,
        maxEntrypointSize: 4000000,
    },
    module: {        
        rules: [
            // Necessary in order to use TypeScript
            {
                test: /\.ts$|tsx/,
                use: 'ts-loader',
                exclude: /node_modules/,
            },            
            {
                test: /\.css$/,
                use: [
                    {
                        loader: 'style-loader',
                    },
                    {
                        loader: 'css-loader',
                    },
                ],
            },
        ],
    },
    resolve: {
        // Alway keep '.js' even though you don't use it.
        // https://github.com/webpack/webpack-dev-server/issues/720#issuecomment-268470989
        extensions: ['.tsx', '.ts', '.js'],
    },
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist'),
        // This line is VERY important for VS Code debugging to attach properly
        // Tamper with it at your own risks
        devtoolModuleFilenameTemplate: '[absolute-resource-path]',
        clean: true,
    },
    plugins: [
        // No need to write a index.html
        new HtmlWebpackPlugin({
            title: 'Fluid Demo',
            favicon: '',
        }),
        // Load environment variables during webpack bundle
        new Dotenv({
            systemvars: true,
        }),
        // Extract CSS to separate file
        new MiniCssExtractPlugin({
            filename: 'css/mystyles.css',
        }),        
    ],
    devServer: {
        // keep port in sync with VS Code launch.json
        port: 3000,
        // Hot-reloading, the sole reason to use webpack here <3
        hot: true,
    },
};