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Function: filterMapAsync()

Returns an async iterable containing the values of asyncIterable transformed by fn in iteration order excluding the values for which fn returns a value awaitable to null or undefined.

Example​

console.log(
  await pipe(
    asAsync([
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ]),
    filterMapAsync(object => object.sloth),
    reduceAsync(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

filterMapAsync(fn)​

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

Returns an async iterable containing the values of asyncIterable transformed by fn in iteration order excluding the values for which fn returns a value awaitable to null or undefined.

Type Parameters​

• From

• To

Parameters​

• fn

Returns​

Function

Parameters​

• asyncIterable: AsyncIterable<From, any, any>

Returns​

AsyncIterable<NonNullable<To>, any, any>

Example​

console.log(
  await pipe(
    asAsync([
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ]),
    filterMapAsync(object => object.sloth),
    reduceAsync(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

Defined in​

filters.d.ts:180

filterMapAsync(fn, asyncIterable)​

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

Returns an async iterable containing the values of asyncIterable transformed by fn in iteration order excluding the values for which fn returns a value awaitable to null or undefined.

Type Parameters​

• From

• To

Parameters​

• fn

• asyncIterable: AsyncIterable<From, any, any>

Returns​

AsyncIterable<NonNullable<To>, any, any>

Example​

console.log(
  await pipe(
    asAsync([
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ]),
    filterMapAsync(object => object.sloth),
    reduceAsync(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

Defined in​

filters.d.ts:183