canirequire

canirequire › CommonJS › @sinonjs/fake-timers

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

Fake JavaScript timers

Last verified Sep 9, 2026 against @sinonjs/fake-timers@15.4.0. Markdown · JSON

CommonJS CommonJS — require() works on every Node.js version we test

@sinonjs/fake-timers ships CommonJS only. require("@sinonjs/fake-timers") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@sinonjs/fake-timers" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

What to do

  1. require("@sinonjs/fake-timers") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import fakeTimers from "@sinonjs/fake-timers"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
15.4.0 (May 5, 2026)
Module format
CommonJS
Last CommonJS version
15.4.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
49.4M
License
BSD-3-Clause

Does @sinonjs/fake-timers@15.4.0 actually load? Runtime test results

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

Runtimerequire("@sinonjs/fake-timers")import "@sinonjs/fake-timers"
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/fake-timers

ES modules (import)

import fakeTimers from "@sinonjs/fake-timers";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const fakeTimers = require("@sinonjs/fake-timers");

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 (49 versions; the newest 49 shown).

VersionsFormatFirst published
6.0.0 – 15.4.0CommonJSFeb 4, 2020

Frequently asked

Is @sinonjs/fake-timers ESM-only?

@sinonjs/fake-timers@15.4.0 is a CommonJS package. @sinonjs/fake-timers ships CommonJS only. require("@sinonjs/fake-timers") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@sinonjs/fake-timers" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import @sinonjs/fake-timers with ES module syntax?

Yes. import fakeTimers from "@sinonjs/fake-timers" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does @sinonjs/fake-timers work in Bun?

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

Does @sinonjs/fake-timers ship TypeScript types?

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

Links

Other commonjs packages

Similar popularity