Skip to main content

Function: eachAsync()

Returns an async iterable equivalent to asyncIterable that applies fn to each value of asyncIterable as it is iterated.

The result of applying fn to a value is awaited before yielding and then moving on to the next value.

Example​

import { asAsync, eachAsync, mapAsync, pipe, reduceAsync, toArray } 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
    }),
    eachAsync(console.log),
    reduceAsync(toArray()),
  ),
)
//=> /slɑθ/
//=> /ˈleɪzi/
//=> /sliːp/
//=> [ '/slɑθ/', '/ˈleɪzi/', '/sliːp/' ]
Playground

Since​

v0.0.1

Call Signature​

eachAsync<Value>(fn): (asyncIterable) => AsyncIterable<Value, any, any>

Type Parameters​

• Value

Parameters​

fn​

(value) => PromiseLike<unknown>

Returns​

Function

Parameters​

asyncIterable​

AsyncIterable<Value, any, any>

Returns​

AsyncIterable<Value, any, any>

Defined in​

side-effects.d.ts:80

Call Signature​

eachAsync<Value>(fn, asyncIterable): AsyncIterable<Value, any, any>

Type Parameters​

• Value

Parameters​

fn​

(value) => PromiseLike<unknown>

asyncIterable​

AsyncIterable<Value, any, any>

Returns​

AsyncIterable<Value, any, any>

Defined in​

side-effects.d.ts:83

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => asserts value is To

Returns​

Function

Parameters​

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

side-effects.d.ts:88

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => asserts value is To

asyncIterable​

AsyncIterable<From, any, any>

Returns​

AsyncIterable<To, any, any>

Defined in​

side-effects.d.ts:91