# Is @protobufjs/pool ESM-only? Can you require() it?

> @protobufjs/pool@1.1.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

A general purpose buffer pool.

Last verified Sep 9, 2026 against @protobufjs/pool@1.1.0.

@protobufjs/pool ships CommonJS only. require("@protobufjs/pool") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@protobufjs/pool" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

## What to do

1. require("@protobufjs/pool") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
2. From ES modules use the default import: import pool from "@protobufjs/pool"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 1.1.0 (Jan 25, 2017)
- Module format: CommonJS
- Last CommonJS version: 1.1.0
- TypeScript types: bundled
- Node engines: not declared
- Weekly downloads: 45.0M
- License: BSD-3-Clause

## Runtime test results for @protobufjs/pool@1.1.0

Installed and executed on Sep 9, 2026 with require("@protobufjs/pool") from a CommonJS file and import "@protobufjs/pool" from an ES module.

| Runtime | require("@protobufjs/pool") | import "@protobufjs/pool" |
|---|---|---|
| Node.js 18 | works | works |
| Node.js 20 | works | works |
| Node.js 22 | works | works |
| Node.js 24 | works | works |
| Node.js 26 | works | works |
| Bun 1.4.0 | works | works |

## How to import @protobufjs/pool

ES modules:

```js
import pool from "@protobufjs/pool";
```

CommonJS:

```js
const pool = require("@protobufjs/pool");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (7 versions; the newest 7 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.1.0 | CommonJS | Dec 11, 2016 |

## Frequently asked

**Is @protobufjs/pool ESM-only?**

@protobufjs/pool@1.1.0 is a CommonJS package. @protobufjs/pool ships CommonJS only. require("@protobufjs/pool") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@protobufjs/pool" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

**Can I import @protobufjs/pool with ES module syntax?**

Yes. import pool from "@protobufjs/pool" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

**Does @protobufjs/pool work in Bun?**

Yes. import "@protobufjs/pool" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @protobufjs/pool ship TypeScript types?**

Yes. @protobufjs/pool bundles its own type declarations; no @types package is needed.

## Links

- [@protobufjs/pool on npm](https://www.npmjs.com/package/@protobufjs/pool)
- [Source repository](https://github.com/dcodeIO/protobuf.js)
- [HTML version](https://canirequire.com/package/@protobufjs/pool/)
- [JSON version](https://canirequire.com/package/@protobufjs/pool.json)

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