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Function: filterConcur()

Returns a concur iterable that contains the values of concurIterable excluding the values for which fn returns a value awaitable to a falsy value.

Like Array.prototype.filter, but for concur iterables.

Example​

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

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

console.log(
  await pipe(
    asConcur([`sloth`, `lazy`, `sleep`]),
    filterConcur(async word => {
      const response = await fetch(`${API_URL}/${word}`)
      const [{ meanings }] = await response.json()
      return meanings.some(meaning => meaning.partOfSpeech === `adjective`)
    }),
    reduceConcur(toArray()),
  ),
)
//=> [ 'lazy' ]
Playground

Since​

v0.0.1

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => value is To

Returns​

Function

Parameters​

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<To>

Defined in​

filters.d.ts:125

Call Signature​

filterConcur<From, To>(fn, concurIterable): ConcurIterable<To>

Type Parameters​

• From

• To

Parameters​

fn​

(value) => value is To

concurIterable​

ConcurIterable<From>

Returns​

ConcurIterable<To>

Defined in​

filters.d.ts:128

Call Signature​

filterConcur<Value>(fn): (concurIterable) => ConcurIterable<Value>

Type Parameters​

• Value

Parameters​

fn​

(value) => unknown

Returns​

Function

Parameters​

concurIterable​

ConcurIterable<Value>

Returns​

ConcurIterable<Value>

Defined in​

filters.d.ts:133

Call Signature​

filterConcur<Value>(fn, concurIterable): ConcurIterable<Value>

Type Parameters​

• Value

Parameters​

fn​

(value) => unknown

concurIterable​

ConcurIterable<Value>

Returns​

ConcurIterable<Value>

Defined in​

filters.d.ts:136