@shigen/async-array

Async Array

Wrapper around an Iterable or AsyncIterable providing the methods from the Async Iterator Helpers proposal.

Usage

// callbacks don't run immediately
const squares = AsyncArray.from([1, 2, 3]).map(async (x) => {
	console.log(x);
	return x * x;
});

// callbacks are called once when the array is consumed with toSync or for await
console.log(await squares.toSync());
	// 1
	// 2
	// 3
	// [1, 4, 9]

// to prevent side effects, callbacks won't run again
console.log(await squares.toSync())
	// [1, 4, 9]