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canirequire › Dual (CommonJS + ESM) › synckit

Is synckit ESM-only? Can you require() it?

Perform async work synchronously in Node.js using `worker_threads` with first-class TypeScript support.

Last verified Sep 9, 2026 against synckit@0.11.13. JSON

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

synckit publishes both a CommonJS entry and a native ESM entry (ESM added in 0.4.0). require("synckit") and import "synckit" both work on every supported Node.js version and in Bun.

Latest
0.11.13 (May 28, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
0.11.13
Native ESM since
0.4.0
TypeScript types
Bundled
Node engines
^14.18.0 || >=16.0.0
Weekly downloads
45.3M
License
MIT

Does synckit@0.11.13 actually load? Runtime test results

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

Runtimerequire("synckit")import "synckit"
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 synckit

ES modules (import)

import synckit from "synckit";

CommonJS (require)

const synckit = require("synckit");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (54 versions; the newest 54 shown).

VersionsFormatFirst published
0.4.0 – 0.11.13Dual (CommonJS + ESM)Aug 29, 2021
0.1.0 – 0.3.4CommonJSApr 26, 2021

Frequently asked

Is synckit ESM-only?

synckit@0.11.13 ships CommonJS and ESM builds. synckit publishes both a CommonJS entry and a native ESM entry (ESM added in 0.4.0). require("synckit") and import "synckit" both work on every supported Node.js version and in Bun.

Can I require synckit?

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

Does synckit work in Bun?

Yes. import "synckit" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does synckit ship TypeScript types?

Yes. synckit bundles its own type declarations; no @types package is needed.

Links

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