async forEach / typescript

asyncForEach.ts

Array.prototype.asyncForEach = async function asyncForEach(
	fn: (item: any, index: number) => void,
	index: number = 0
) {
	await fn(this[index], index);
	if (index + 1 === this.length) return;
	await asyncForEach.call(this, fn, index + 1);
};