AsyncIter: Better AsyncIterables for Deno

I just want to work with AsyncIterable collections without using for loops. Is that so wrong?

This little library exposes both functions and a fluent-style wrapper so I can write my lazy code the way I want to: lazily.

Quickstart

Here are some simple examples to get you started.

const iter = asyncIter([1, 2, 3]);
for await (const it of iter) {
  console.log(it);
}

console.dir(await asyncIter([1, 2, 3]).map((it) => it * 2).collect());
// [ 2, 4, 6 ]

console.dir(await asyncIter([1, 2, 3]).filter((it) => it > 1).collect());
// [ 2, 3 ]

console.dir(await asyncIter([1, 2, 3]).reduce(0, (a, b) => a + b));
// 6

await asyncIter([1, 2, 3]).forEach((it) => console.log(it));
// 1
// 2
// 3

const iter = asyncIter([1, 2, 3]);
console.dir(await iter.first());
console.dir(await iter.first());
// 1
// null

console.dir(await asyncIter([1, 2, 3]).collect());
// [ 1, 2, 3 ]