javascript_practice/hw09/makeProfileTimer.js

const makeProfileTimer = () => {
	let start = performance.now();
	return () => {
		let stop = performance.now();
		return stop - start;
	}
}

console.log(makeProfileTimer())

let timer = makeProfileTimer();

console.log(timer)
alert('Замеряем время работы этого alert');
alert(timer());

console.log(timer())