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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 ]

mapAsync(fn)​

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

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

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

Type Parameters​

• From

• To

Parameters​

• fn

Returns​

Function

Parameters​

• asyncIterable: AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Example​

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

Defined in​

transforms.d.ts:52

mapAsync(fn, asyncIterable)​

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

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

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

Type Parameters​

• From

• To

Parameters​

• fn

• asyncIterable: AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Example​

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

Defined in​

transforms.d.ts:55