I got tired of rewriting .slice() loops — so I made "chonkify", a tiny chunking utility that works with anything

I don’t know how many times I’ve written some version of this:

for (let i = 0; i < data.length; i += chunkSize) {
  chunks.push(data.slice(i, i + chunkSize));
}

It works. But after the 10th time — especially when working with buffers, emoji-heavy strings, or even async streams — I decided it was time to stop repeating myself.

So I built chonkify.

Why?

Because I needed a chunking function that:

✅ Works with:

• Arrays
• Strings
• Buffers
• Typed arrays
• Sets & Maps
• Array-likes
• Even AsyncIterable objects

😅 Handles:

• Complex Unicode (grapheme clusters like 🏳️‍🌈, 👨‍👩‍👧‍👦)
• Multi-codepoint emoji without slicing them in half

💡 Is:

• Zero dependencies
• ~870 bytes (core)
• ESM-first and TypeScript-ready

Examples

import { chonkify } from 'chonkify'

for (const chunk of chonkify("👨‍👩‍👧‍👦🎉🎊🍕", 2)) {
  console.log(chunk)
}
// → ["👨‍👩‍👧‍👦", "🎉"], ["🎊", "🍕"]

Or with an async iterable:

for await (const chunk of chonkify(streamOfItems, 100)) {
  await sendBatch(chunk)
}

Try it

npm i chonkify

• GitHub Repo
• npm package

I mostly built this for myself, but figured someone else might find it useful too.