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Is @tanstack/query-core ESM-only? Can you require() it?

The framework agnostic core that powers TanStack Query

Last verified Sep 9, 2026 against @tanstack/query-core@5.102.8. Markdown · JSON

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

@tanstack/query-core publishes both a CommonJS entry and a native ESM entry (ESM added in 4.3.0). require("@tanstack/query-core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@tanstack/query-core" works alongside it.

What to do

  1. Nothing to change. require("@tanstack/query-core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import * as queryCore from "@tanstack/query-core" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
5.102.8 (Aug 27, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
5.102.8
Native ESM since
4.3.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
46.8M
License
MIT

Does @tanstack/query-core@5.102.8 actually load? Runtime test results

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

Runtimerequire("@tanstack/query-core")import "@tanstack/query-core"
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 @tanstack/query-core

ES modules (import)

import * as queryCore from "@tanstack/query-core";

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

CommonJS (require)

const queryCore = require("@tanstack/query-core");

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 (359 versions; the newest 60 shown).

VersionsFormatFirst published
5.90.5 – 5.102.8Dual (CommonJS + ESM)Oct 16, 2025

Frequently asked

Is @tanstack/query-core ESM-only?

@tanstack/query-core@5.102.8 ships CommonJS and ESM builds. @tanstack/query-core publishes both a CommonJS entry and a native ESM entry (ESM added in 4.3.0). require("@tanstack/query-core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@tanstack/query-core" works alongside it.

Can I require @tanstack/query-core?

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

Does @tanstack/query-core work in Bun?

Yes. import "@tanstack/query-core" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does @tanstack/query-core ship TypeScript types?

Yes. @tanstack/query-core bundles its own type declarations; no @types package is needed.

Links

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