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Function: mapAsync()

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

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

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

Call Signature​

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

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<To>

Returns​

Function

Parameters​

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

transforms.d.ts:64

Call Signature​

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

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<To>

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

transforms.d.ts:67

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => MaybePromiseLike<To>

Returns​

Function

Parameters​

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

transforms.d.ts:72

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => MaybePromiseLike<To>

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

transforms.d.ts:75