Skip to main content

Variable: mapAsync()

const mapAsync: {<From, To>(fn): (asyncIterable) => AsyncIterable<To>; <From, To>(fn, asyncIterable): AsyncIterable<To>; <From, To>(fn): (asyncIterable) => AsyncIterable<To>; <From, To>(fn, asyncIterable): AsyncIterable<To>; }

Defined in: transforms.d.ts:62

Returns an async iterable containing the values of asyncIterable transformed by fn in iteration order.

Like Array.prototype.map, but for async iterables.

Call Signature​

<From, To>(fn): (asyncIterable) => AsyncIterable<To>

Type Parameters​

From​

From

To​

To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<To>

Returns​

(asyncIterable): AsyncIterable<To>

Parameters​

asyncIterable​

AsyncIterable<From>

Returns​

AsyncIterable<To>

Call Signature​

<From, To>(fn, asyncIterable): AsyncIterable<To>

Type Parameters​

From​

From

To​

To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<To>

asyncIterable​

AsyncIterable<From>

Returns​

AsyncIterable<To>

Call Signature​

<From, To>(fn): (asyncIterable) => AsyncIterable<To>

Type Parameters​

From​

From

To​

To

Parameters​

fn​

(value) => MaybePromiseLike<To>

Returns​

(asyncIterable): AsyncIterable<To>

Parameters​

asyncIterable​

AsyncIterable<From>

Returns​

AsyncIterable<To>

Call Signature​

<From, To>(fn, asyncIterable): AsyncIterable<To>

Type Parameters​

From​

From

To​

To

Parameters​

fn​

(value) => MaybePromiseLike<To>

asyncIterable​

AsyncIterable<From>

Returns​

AsyncIterable<To>

Example​

console.log(
  await pipe(
    asAsync([`sloth`, `more sloth`, `even more sloth`]),
    mapAsync(string => string.length),
    reduceAsync(toArray()),
  ),
)
//=> [ 5, 10, 15 ]

Since​

v0.0.1