asyncMap

asyncMap<I, O>(xs, mapper): AsyncIterable<O>

Map over an AsyncIterable, and give the results back as an AsyncIterable generator.

Example

await asyncCollect(asyncMap([1, 2, 3], (x) => x + 1))
// => [2, 3, 4]

const asyncFn = <T>(x: T) => Promise.resolve(x)
async function* foobar() {
  yield await asyncFn('foo')
  yield await asyncFn('Bar')
}
await asyncCollect(asyncMap(foobar(), asyncFn))
// => ["foo", "bar"]

Alternatives

• p-map-series
• AsyncIterator.prototype.map

Type Parameters

• I

• O

The mapped output type.

Parameters

xs

The values to map over.

AsyncIterable<I> | Iterable<I>

mapper

(x, index) => O | Promise<O>

Returns

AsyncIterable<O>

An async map generator.