deasync.js

// node --version v18.16.0

import deasync from 'deasync';
import fetch from 'node-fetch';

function deasyncPromise(fn) {
	return (...args) => {
		return deasync((cb) => fn(...args).then((r) => cb(undefined, r)).catch(cb))();
	}
}

async function asyncFlow(url) {
	const response = await fetch(url);
	// throw new Error('asd');
	return response.text();
}

console.log('beginning')

setInterval(() => {
	console.log("loop", Date.now());
}, 200);

const as = function() {
	console.log('async start');
	console.log(deasyncPromise(asyncFlow)('https://open.rocket.chat/api/info'));
	console.log('async end');
}
process.nextTick(as);

console.log('end');