# Is moment-timezone ESM-only? Can you require() it?

> moment-timezone@0.6.3 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Parse and display moments in any timezone.

Last verified Sep 9, 2026 against moment-timezone@0.6.3.

moment-timezone ships CommonJS only. require("moment-timezone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js *. import "moment-timezone" 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("moment-timezone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js *.
2. From ES modules use the default import: import momentTimezone from "moment-timezone"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 0.6.3 (Jul 19, 2026)
- Module format: CommonJS
- Last CommonJS version: 0.6.3
- TypeScript types: bundled
- Node engines: *
- Weekly downloads: 15.8M
- License: MIT

## Runtime test results for moment-timezone@0.6.3

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

| Runtime | require("moment-timezone") | import "moment-timezone" |
|---|---|---|
| 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 moment-timezone

ES modules:

```js
import momentTimezone from "moment-timezone";
```

CommonJS:

```js
const momentTimezone = require("moment-timezone");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (69 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 0.2.3 – 0.6.3 | CommonJS | Oct 20, 2014 |

## Frequently asked

**Is moment-timezone ESM-only?**

moment-timezone@0.6.3 is a CommonJS package. moment-timezone ships CommonJS only. require("moment-timezone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js *. import "moment-timezone" 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 moment-timezone with ES module syntax?**

Yes. import momentTimezone from "moment-timezone" 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 moment-timezone work in Bun?**

Yes. import "moment-timezone" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does moment-timezone ship TypeScript types?**

Yes. moment-timezone bundles its own type declarations; no @types package is needed.

## Links

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

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