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canirequire › Dual (CommonJS + ESM) › jest-leak-detector

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

Module for verifying whether an object has been garbage collected or not.

Last verified Sep 9, 2026 against jest-leak-detector@30.5.1. Markdown · JSON

Dual (CommonJS + ESM) Dual package — require() works on every Node.js version we test; import works too

jest-leak-detector publishes both a CommonJS entry and a native ESM entry (ESM added in 30.0.0). require("jest-leak-detector") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0. import "jest-leak-detector" works alongside it.

What to do

  1. Nothing to change. require("jest-leak-detector") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0. import * as jestLeakDetector from "jest-leak-detector" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
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
43.5M
License
MIT

Does jest-leak-detector@30.5.1 actually load? Runtime test results

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

Runtimerequire("jest-leak-detector")import "jest-leak-detector"
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 jest-leak-detector

ES modules (import)

import * as jestLeakDetector from "jest-leak-detector";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

const jestLeakDetector = require("jest-leak-detector");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (100 versions; the newest 60 shown).

VersionsFormatFirst published
30.0.0 – 30.5.1Dual (CommonJS + ESM)Jun 10, 2025
26.5.0 – 29.7.0CommonJSOct 5, 2020

Frequently asked

Is jest-leak-detector ESM-only?

jest-leak-detector@30.5.1 ships CommonJS and ESM builds. jest-leak-detector publishes both a CommonJS entry and a native ESM entry (ESM added in 30.0.0). require("jest-leak-detector") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0. import "jest-leak-detector" works alongside it.

Can I require jest-leak-detector?

Yes. jest-leak-detector ships a CommonJS entry alongside the native ESM entry. require("jest-leak-detector") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0.

Does jest-leak-detector work in Bun?

Yes. import "jest-leak-detector" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does jest-leak-detector ship TypeScript types?

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

Links

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