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canirequire › Dual (CommonJS + ESM) › signal-exit

Is signal-exit ESM-only? Can you require() it?

when you want to fire an event no matter how a process exits.

Last verified Sep 9, 2026 against signal-exit@4.1.0. Markdown · JSON

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

signal-exit publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("signal-exit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14. import "signal-exit" works alongside it.

What to do

  1. Nothing to change. require("signal-exit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14. import * as signalExit from "signal-exit" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
4.1.0 (Jul 29, 2023)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
4.1.0
Native ESM since
4.0.0
TypeScript types
Bundled
Node engines
>=14
Weekly downloads
198.9M
License
ISC

Does signal-exit@4.1.0 actually load? Runtime test results

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

Runtimerequire("signal-exit")import "signal-exit"
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 signal-exit

ES modules (import)

import * as signalExit from "signal-exit";

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

CommonJS (require)

const signalExit = require("signal-exit");

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 (23 versions; the newest 23 shown).

VersionsFormatFirst published
4.0.0 – 4.1.0Dual (CommonJS + ESM)Apr 16, 2023
1.0.0 – 3.0.7CommonJSMay 16, 2015

Frequently asked

Is signal-exit ESM-only?

signal-exit@4.1.0 ships CommonJS and ESM builds. signal-exit publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("signal-exit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14. import "signal-exit" works alongside it.

Can I require signal-exit?

Yes. signal-exit ships a CommonJS entry alongside the native ESM entry. require("signal-exit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14.

Does signal-exit work in Bun?

Yes. import "signal-exit" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does signal-exit ship TypeScript types?

Yes. signal-exit bundles its own type declarations; no @types package is needed.

Links

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