webpack.config.js

// Generated using webpack-cli https://github.com/webpack/webpack-cli

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const WorkboxWebpackPlugin = require('workbox-webpack-plugin');

const isProduction = process.env.NODE_ENV == 'production';


const stylesHandler = 'style-loader';



const config = {
    entry: './src/index.ts',
    output: {
        path: path.resolve(__dirname, 'dist'),
    },
    devServer: {
        open: true,
        host: 'localhost',
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: 'index.html',
            filename: 'index.html',
            favicon: 'src/assets/favicon.ico',
            chunks: ['main'],
        }),
        new HtmlWebpackPlugin({
            template: 'history.html',
            filename: 'history.html',
            favicon: 'src/assets/favicon.ico',
            chunks: [],
        }),

        // Add your plugins here
        // Learn more about plugins from https://webpack.js.org/configuration/plugins/
    ],
    module: {
        rules: [
            {
                test: /\.(ts|tsx)$/i,
                loader: 'ts-loader',
                exclude: ['/node_modules/'],
            },
            {
                test: /\.css$/i,
                use: [stylesHandler,'css-loader'],
            },
            {
                test: /\.s[ac]ss$/i,
                use: [stylesHandler, 'css-loader', 'sass-loader'],
            },
            {
                test: /\.(eot|svg|ttf|woff|woff2|png|jpg|gif|ico)$/i,
                type: 'asset/resource',
                generator: {
                    // keep original filenames and copy images to `dist/img/`
                    filename: 'img/[name][ext]',
                },
            },

            // Add your rules for custom modules here
            // Learn more about loaders from https://webpack.js.org/loaders/
        ],
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.jsx', '.js', '...'],
    },
    externals: {
        jquery: 'jQuery',
        bootstrap: 'bootstrap',
        d3: 'd3',
        "d3-cloud": "d3.layout.cloud",
    }
};

module.exports = () => {
    if (isProduction) {
        config.mode = 'production';
        
        
        config.plugins.push(new WorkboxWebpackPlugin.GenerateSW());
        
    } else {
        config.mode = 'development';
    }


    return config;
};