merge-async-iterators

merge-async-iterators

A simple async iterators merger

Requires ES2018 Async Iteration

Install

npm i merge-async-iterators

Usage

API

merge([...iterators], opts)

• iterators Array of async iterables

• opts

  • yieldIterator[=false] Yields {iterator, data: {value, done}} (instead of just value)

    Useful if you wanna know which iterator yielded the value

• Returns A single merged async iterable

Example

const merge = require('merge-async-iterators');

async function* a () {
  yield 'a1'
  yield 'a2'
  return 'a3'
}
async function* b () {
  yield 'b1'
  yield 'b2'
  return 'b3'
}

for await (const value of merge([a(), b()])) {
  console.log(value)
}

a1
b1
a2
b2
a3
b3

Alternatives

• mergeiterator