Make a busy wait in JS

busyWait.js

/**
 * Create a sleep function using promise.
 * @param {number} ms - duration time in milliseconds.
 */
const sleep = (ms) => new Promise(resolve => setTimeout(()=>resolve({time:ms}), ms));

/**
 * Loop until have the success condition.
 * @param {function} condition - boolean function that return the condition.
 * @param {number} 	 timeout   - limit execution time.
 * @param {number} 	 waitTime  - make a pause between the condition loop.
 */
const busyWait = async (condition, timeout=100, waitTime=0)=>{

	//Create a start time, to track the time.
	const startTime = new Date().getTime();

	//Check the condition.
	let check = await condition();

	//Loop until the condition match or exced timeout.
	while (check===false){

		//Check timeout.
		const elapsedTime = (new Date().getTime())-startTime;

		//Check if time finish.
		if (elapsedTime>=timeout)
			throw {timeout, elapsedTime, detail:'Interrupted execution by timeout'};

		//Make a pause in the loop.
		sleep(waitTime);

		//Check again the condition.
		check = await condition();

	}

	return check;

};

let count = 0;

const check = async ()=>{

	console.log('--->',count);

	if (count<10000000){		
		count++;
		return false;
	} else {
		return true;
	}

}

busyWait(check).then(a=>console.log('then',a)).catch(e=>console.log('err',e));