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

Delightful JavaScript Testing.

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

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

jest-cli publishes both a CommonJS entry and a native ESM entry (ESM added in 30.0.0). require("jest-cli") and import "jest-cli" 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
32.0M
License
MIT

Does jest-cli@30.5.1 actually load? Runtime test results

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

Runtimerequire("jest-cli")import "jest-cli"
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-cli

ES modules (import)

import jestCli from "jest-cli";

CommonJS (require)

const jestCli = require("jest-cli");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (262 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-cli ESM-only?

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

Can I require jest-cli?

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

Does jest-cli work in Bun?

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

Does jest-cli ship TypeScript types?

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

Links

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