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Function: filterMapConcur()

Returns a concur iterable containing the values of concurIterable transformed by fn excluding the values for which fn returns a value awaitable to null or undefined.

Example​

import { asConcur, filterMapConcur, pipe, reduceConcur, toArray } from 'lfi'

const API_URL = `https://api.dictionaryapi.dev/api/v2/entries/en`

console.log(
  await pipe(
    asConcur([
      { sloth: `sloth` },
      { sloth: `lazy` },
      { notSloth: `active` },
      { sloth: `sleep` },
      { notSloth: `awake` },
    ]),
    filterMapConcur(async object => {
      if (!object.sloth) {
        return null
      }

      const response = await fetch(`${API_URL}/${object.sloth}`)
      return (await response.json())[0].phonetic
    }),
    reduceConcur(toArray()),
  ),
)
// NOTE: This order may change between runs
//=> [ '/slɑθ/', '/ˈleɪzi/', '/sliːp/' ]
Playground

Since​

v0.0.1

Call Signature​

filterMapConcur<From, To>(fn): (concurIterable) => ConcurIterable<NonNullable<To>>

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<undefined | null | To>

Returns​

Function

Parameters​

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<NonNullable<To>>

Defined in​

filters.d.ts:285

Call Signature​

filterMapConcur<From, To>(fn, concurIterable): ConcurIterable<NonNullable<To>>

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => MaybePromiseLike<undefined | null | To>

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<NonNullable<To>>

Defined in​

filters.d.ts:288

Call Signature​

filterMapConcur<From, To>(fn): (concurIterable) => ConcurIterable<NonNullable<To>>

Type Parameters​

• From

• To

Parameters​

fn​

(value) => MaybePromiseLike<undefined | null | To>

Returns​

Function

Parameters​

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<NonNullable<To>>

Defined in​

filters.d.ts:293

Call Signature​

filterMapConcur<From, To>(fn, concurIterable): ConcurIterable<NonNullable<To>>

Type Parameters​

• From

• To

Parameters​

fn​

(value) => MaybePromiseLike<undefined | null | To>

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<NonNullable<To>>

Defined in​

filters.d.ts:296