# it-batched-bytes

> Takes an async iterator that emits byte arrays and emits them as fixed size batches

Latest version **3.0.0** (published 2026-05-08) · Apache-2.0 OR MIT license · 0 weekly downloads

## Install

```sh
npm install it-batched-bytes
pnpm add it-batched-bytes
yarn add it-batched-bytes
bun add it-batched-bytes
```

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; esm support; no vulnerabilities; has provenance; high maintenance score; high quality score.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 3.0.0 |
| Published | 2026-05-08 |
| First published | 2022-11-24 |
| Weekly downloads | 0 |
| License | Apache-2.0 OR MIT |
| TypeScript types | bundled |
| Module format | ESM |
| Dependencies | 2 |
| Unpacked size | 70.2 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 284 |
| Author | Alex Potsides |
| Maintainers | achingbrain |

## Links

- npm: https://www.npmjs.com/package/it-batched-bytes
- Repository: https://github.com/achingbrain/it
- Homepage: https://github.com/achingbrain/it/tree/main/packages/it-batched-bytes#readme
- Issues: https://github.com/achingbrain/it/issues
- npm.io page: https://npm.io/package/it-batched-bytes

## Dependencies (2)

- [p-defer](https://npm.io/package/p-defer.md) ^4.0.1
- [uint8arraylist](https://npm.io/package/uint8arraylist.md) ^3.0.1

## Recent versions

- 3.0.0 (latest) — 2026-05-08
- 2.0.12 — 2026-04-10
- 2.0.11 — 2026-04-10
- 2.0.10 — 2025-06-01
- 2.0.9 — 2025-05-13
- 2.0.8 — 2025-03-06
- 2.0.7 — 2024-04-25
- 2.0.6 — 2024-04-24
- 2.0.5 — 2023-11-15
- 2.0.4 — 2023-08-16
- 2.0.3 — 2023-05-09
- 2.0.2 — 2023-04-13
- 2.0.1 — 2023-03-31
- 2.0.0 — 2023-03-30
- 1.0.1 — 2023-03-02
- … 2 more at https://npm.io/package/it-batched-bytes/versions

## README

# it-batched-bytes

[![codecov](https://img.shields.io/codecov/c/github/achingbrain/it.svg?style=flat-square)](https://codecov.io/gh/achingbrain/it)
[![CI](https://img.shields.io/github/actions/workflow/status/achingbrain/it/js-test-and-release.yml?branch=main\&style=flat-square)](https://github.com/achingbrain/it/actions/workflows/js-test-and-release.yml?query=branch%3Amain)

> Takes an async iterator that emits byte arrays and emits them as fixed size batches

# About

<!--

!IMPORTANT!

Everything in this README between "# About" and "# Install" is automatically
generated and will be overwritten the next time the doc generator is run.

To make changes to this section, please update the @packageDocumentation section
of src/index.js or src/index.ts

To experiment with formatting, please run "npm run docs" from the root of this
repo and examine the changes made.

-->

The final batch may be smaller than the max.

## Example

```javascript
import batch from 'it-batched-bytes'
import all from 'it-all'

// This can also be an iterator, generator, etc
const values = [
  Uint8Array.from([0]),
  Uint8Array.from([1]),
  Uint8Array.from([2]),
  Uint8Array.from([3]),
  Uint8Array.from([4])
]
const batchSize = 2

const result = all(batch(values, { size: batchSize }))

console.info(result) // [0, 1], [2, 3], [4]
```

Async sources must be awaited:

```javascript
import batch from 'it-batched-bytes'
import all from 'it-all'

const values = async function * () {
  yield Uint8Array.from([0])
  yield Uint8Array.from([1])
  yield Uint8Array.from([2])
  yield Uint8Array.from([3])
  yield Uint8Array.from([4])
}
const batchSize = 2

const result = await all(batch(values, { size: batchSize }))

console.info(result) // [0, 1], [2, 3], [4]
```

# Install

```console
$ npm i it-batched-bytes
```

## Browser `<script>` tag

Loading this module through a script tag will make its exports available as `ItBatchedBytes` in the global namespace.

```html
<script src="https://unpkg.com/it-batched-bytes/dist/index.min.js"></script>
```

# API Docs

- <https://achingbrain.github.io/it/modules/it-batched-bytes.html>

# License

Licensed under either of

- Apache 2.0, ([LICENSE-APACHE](https://github.com/achingbrain/it/blob/main/packages/it-batched-bytes/LICENSE-APACHE) / <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT ([LICENSE-MIT](https://github.com/achingbrain/it/blob/main/packages/it-batched-bytes/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.

---
_Source: https://npm.io/package/it-batched-bytes · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._