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Variable: firstAsync()

const firstAsync: <Value>(asyncIterable) => AsyncOptional<Value>

Defined in: splices.d.ts:498

Returns an async iterable containing the first value of asyncIterable, or an empty async iterable if asyncIterable is empty.

Type Parameters​

Value​

Value

Parameters​

asyncIterable​

AsyncIterable<Value>

Returns​

AsyncOptional<Value>

Example​

import { asAsync, firstAsync, mapAsync, orAsync, pipe } from 'lfi'

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

console.log(
  await pipe(
    asAsync([`sloth`, `lazy`, `sleep`]),
    mapAsync(async word => {
      const response = await fetch(`${API_URL}/${word}`)
      return (await response.json())[0].phonetic
    }),
    firstAsync,
    orAsync(() => `empty`),
  ),
)
//=> /slɑθ/
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Since​

v0.0.1