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Is es-to-primitive ESM-only? Can you require() it?

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Last verified Sep 9, 2026 against es-to-primitive@1.3.4. JSON

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

es-to-primitive ships CommonJS only. require("es-to-primitive") works everywhere. import "es-to-primitive" 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.

Latest
1.3.4 (Jun 26, 2026)
Module format
CommonJS
Last CommonJS version
1.3.4
TypeScript types
Bundled
Node engines
>= 0.4
Weekly downloads
79.1M
License
MIT

Does es-to-primitive@1.3.4 actually load? Runtime test results

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

Runtimerequire("es-to-primitive")import "es-to-primitive"
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 es-to-primitive

ES modules (import)

import esToPrimitive from "es-to-primitive";

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 esToPrimitive = require("es-to-primitive");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (11 versions; the newest 11 shown).

VersionsFormatFirst published
1.0.0 – 1.3.4CommonJSMar 19, 2015

Frequently asked

Is es-to-primitive ESM-only?

es-to-primitive@1.3.4 is a CommonJS package. es-to-primitive ships CommonJS only. require("es-to-primitive") works everywhere. import "es-to-primitive" 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 es-to-primitive with ES module syntax?

Yes. import esToPrimitive from "es-to-primitive" 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 es-to-primitive work in Bun?

Yes. import "es-to-primitive" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does es-to-primitive ship TypeScript types?

Yes. es-to-primitive bundles its own type declarations; no @types package is needed.

Links

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