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Is jest ESM-only? Can you require() it?

Delightful JavaScript Testing.

Last verified Sep 9, 2026 against jest@30.5.1. JSON

Dual (CommonJS + ESM) Dual package — both require() and import work

jest publishes both a CommonJS entry and a native ESM entry (ESM added in 30.0.0). require("jest") and import "jest" both work on every supported Node.js version and in Bun.

Latest
30.5.1 (Sep 1, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
30.5.1
Native ESM since
30.0.0
TypeScript types
Bundled
Node engines
^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0
Weekly downloads
42.1M
License
MIT

Does jest@30.5.1 actually load? Runtime test results

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

Runtimerequire("jest")import "jest"
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✓ works✓ works

How to import jest

ES modules (import)

import jest from "jest";

CommonJS (require)

const jest = require("jest");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (237 versions; the newest 60 shown).

VersionsFormatFirst published
30.0.0 – 30.5.1Dual (CommonJS + ESM)Jun 10, 2025
27.3.0 – 29.7.0CommonJSOct 17, 2021

Frequently asked

Is jest ESM-only?

jest@30.5.1 ships CommonJS and ESM builds. jest publishes both a CommonJS entry and a native ESM entry (ESM added in 30.0.0). require("jest") and import "jest" both work on every supported Node.js version and in Bun.

Can I require jest?

Yes. jest ships a CommonJS entry, so require("jest") works on every Node.js version, alongside the native ESM entry for import.

Does jest work in Bun?

Yes. import "jest" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does jest ship TypeScript types?

Yes. jest bundles its own type declarations; no @types package is needed.

Links

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