it-first

it-first

Returns the first result from an async iterator

Table of contents

• Install
  • Browser <script> tag
• Usage
• License
• Contribution

Install

$ npm i it-first

Browser <script> tag

Loading this module through a script tag will make it's exports available as ItFirst in the global namespace.

<script src="https://unpkg.com/it-first/dist/index.min.js"></script>

Mostly useful for tests.

Usage

import first from 'it-first'

// This can also be an iterator, generator, etc
const values = [0, 1, 2, 3, 4]

const res = first(values)

console.info(res) // 0

Async sources must be awaited:

import first from 'it-first'

const values = async function * () {
  yield * [0, 1, 2, 3, 4]
}

const res = await first(values())

console.info(res) // 0

License

Licensed under either of

• Apache 2.0, (LICENSE-APACHE / http://www.apache.org/licenses/LICENSE-2.0)
• MIT (LICENSE-MIT / http://opensource.org/licenses/MIT)

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.