# Is queue-microtask ESM-only? Can you require() it?

> queue-microtask@1.2.3 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

fast, tiny `queueMicrotask` shim for modern engines

Last verified Sep 9, 2026 against queue-microtask@1.2.3.

queue-microtask ships CommonJS only. require("queue-microtask") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "queue-microtask" 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("queue-microtask") 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 queueMicrotask from "queue-microtask"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for queue-microtask; declare the module yourself if you need them.

## Facts

- Latest: 1.2.3 (Mar 22, 2021)
- Module format: CommonJS
- Last CommonJS version: 1.2.3
- TypeScript types: none
- Node engines: not declared
- Weekly downloads: 109.4M
- License: MIT

## Runtime test results for queue-microtask@1.2.3

Installed and executed on Sep 9, 2026 with require("queue-microtask") from a CommonJS file and import "queue-microtask" from an ES module.

| Runtime | require("queue-microtask") | import "queue-microtask" |
|---|---|---|
| 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 queue-microtask

ES modules:

```js
import queueMicrotask from "queue-microtask";
```

CommonJS:

```js
const queueMicrotask = require("queue-microtask");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (11 versions; the newest 11 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.2.3 | CommonJS | Sep 7, 2019 |

## Frequently asked

**Is queue-microtask ESM-only?**

queue-microtask@1.2.3 is a CommonJS package. queue-microtask ships CommonJS only. require("queue-microtask") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "queue-microtask" 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 queue-microtask with ES module syntax?**

Yes. import queueMicrotask from "queue-microtask" 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 queue-microtask work in Bun?**

Yes. import "queue-microtask" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does queue-microtask ship TypeScript types?**

No. queue-microtask ships no type declarations and there is no @types package for it.

## Links

- [queue-microtask on npm](https://www.npmjs.com/package/queue-microtask)
- [Source repository](https://github.com/feross/queue-microtask)
- [HTML version](https://canirequire.com/package/queue-microtask/)
- [JSON version](https://canirequire.com/package/queue-microtask.json)

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