index.js

const argv = require('minimist')(process.argv.slice(2))._;
const cmd = argv[0];

if (cmd === 'build') {
    // create html files
    console.log('Build site...');
    const build = require('./lib/build');

    build.start().then(
        () => {
            console.log('Done!');
        },
        (error) => {
            console.log('Build error', error);
        }
    );
} else if (cmd === 'serve') {
    // run static server

    const { serverPort, destinationDir } = require('./lib/config')();
    const StaticServer = require('static-server');
    let serv = new StaticServer({
        rootPath: destinationDir,
        port: serverPort,
    });
    serv.start(() => {
        console.log('Static server listening on', serverPort);
    });
} else {
    module.exports = {
        build: require('./lib/build'),
    };
}