idea: noUselessAsync

[andresribeiro]

some functions are declared as asynchronous, even if they are synchronous. eg:

async function sum(first, second) {
  return first + second
}

async is not needed, and slows down the application, as there's an overhead on the event loop

async function sum(first, second) {
	return first + second;
}
console.time("with async");
for (let i = 0; i <= 10_000_000; i++) {
	sum(i, i * 2);
}
console.timeEnd("with async");

function sumSync(first, second) {
	return first + second;
}
console.time("without async");
for (let i = 0; i <= 10_000_000; i++) {
	sumSync(i, i * 2);
}
console.timeEnd("without async");

with async: 276.082ms
without async: 14.747ms

[unvalley]

Hi, thanks for posting. I think #575 will report the useless aysnc.
If it looks OK, I'll close this discussion.

[andresribeiro]

@unvalley sorry, I didn't see that one