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Is @sinonjs/commons ESM-only? Can you require() it?

Simple functions shared among the sinon end user libraries

Last verified Sep 9, 2026 against @sinonjs/commons@4.0.0-alpha.0. Markdown · JSON

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

@sinonjs/commons publishes both a CommonJS entry and a native ESM entry. require("@sinonjs/commons") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@sinonjs/commons" works alongside it.

What to do

  1. Nothing to change. require("@sinonjs/commons") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import * as commons from "@sinonjs/commons" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
4.0.0-alpha.0 (Jan 20, 2024)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
3.0.1
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
39.8M
License
BSD-3-Clause

Does @sinonjs/commons@4.0.0-alpha.0 actually load? Runtime test results

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

Runtimerequire("@sinonjs/commons")import "@sinonjs/commons"
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 @sinonjs/commons

ES modules (import)

import * as commons from "@sinonjs/commons";

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

CommonJS (require)

const commons = require("@sinonjs/commons");

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 (24 versions; the newest 24 shown).

VersionsFormatFirst published
1.0.0 – 3.0.1CommonJSAug 3, 2018

Frequently asked

Is @sinonjs/commons ESM-only?

@sinonjs/commons@4.0.0-alpha.0 ships CommonJS and ESM builds. @sinonjs/commons publishes both a CommonJS entry and a native ESM entry. require("@sinonjs/commons") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@sinonjs/commons" works alongside it.

Can I require @sinonjs/commons?

Yes. @sinonjs/commons ships a CommonJS entry alongside the native ESM entry. require("@sinonjs/commons") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.

Does @sinonjs/commons work in Bun?

Yes. import "@sinonjs/commons" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does @sinonjs/commons ship TypeScript types?

Yes. @sinonjs/commons bundles its own type declarations; no @types package is needed.

Links

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