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Is @reduxjs/toolkit ESM-only? Can you require() it?

The official, opinionated, batteries-included toolset for efficient Redux development

Last verified Sep 9, 2026 against @reduxjs/toolkit@2.12.0. Markdown · JSON

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

@reduxjs/toolkit publishes both a CommonJS entry and a native ESM entry (ESM added in 2.0.0). require("@reduxjs/toolkit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@reduxjs/toolkit" works alongside it.

What to do

  1. Nothing to change. require("@reduxjs/toolkit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import * as toolkit from "@reduxjs/toolkit" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
2.12.0 (May 15, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
2.12.0
Native ESM since
2.0.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
26.4M
License
MIT

Does @reduxjs/toolkit@2.12.0 actually load? Runtime test results

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

Runtimerequire("@reduxjs/toolkit")import "@reduxjs/toolkit"
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 @reduxjs/toolkit

ES modules (import)

import * as toolkit from "@reduxjs/toolkit";

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

CommonJS (require)

const toolkit = require("@reduxjs/toolkit");

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 (71 versions; the newest 60 shown).

VersionsFormatFirst published
2.0.0 – 2.12.0Dual (CommonJS + ESM)Dec 4, 2023
1.3.2 – 1.9.7CommonJSMar 28, 2020

Frequently asked

Is @reduxjs/toolkit ESM-only?

@reduxjs/toolkit@2.12.0 ships CommonJS and ESM builds. @reduxjs/toolkit publishes both a CommonJS entry and a native ESM entry (ESM added in 2.0.0). require("@reduxjs/toolkit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@reduxjs/toolkit" works alongside it.

Can I require @reduxjs/toolkit?

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

Does @reduxjs/toolkit work in Bun?

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

Does @reduxjs/toolkit ship TypeScript types?

Yes. @reduxjs/toolkit bundles its own type declarations; no @types package is needed.

Links

Other dual (commonjs + esm) packages

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