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Is functions-have-names ESM-only? Can you require() it?

Does this JS environment support the `name` property on functions?

Last verified Sep 9, 2026 against functions-have-names@1.2.3. JSON

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

functions-have-names ships CommonJS only. require("functions-have-names") works everywhere. import "functions-have-names" 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
1.2.3 (Apr 19, 2022)
Module format
CommonJS
Last CommonJS version
1.2.3
TypeScript types
@types/functions-have-names
Node engines
not declared
Weekly downloads
76.2M
License
MIT

Does functions-have-names@1.2.3 actually load? Runtime test results

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

Runtimerequire("functions-have-names")import "functions-have-names"
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 functions-have-names

ES modules (import)

import functionsHaveNames from "functions-have-names";

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 functionsHaveNames = require("functions-have-names");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (7 versions; the newest 7 shown).

VersionsFormatFirst published
1.0.0 – 1.2.3CommonJSJul 23, 2019

Frequently asked

Is functions-have-names ESM-only?

functions-have-names@1.2.3 is a CommonJS package. functions-have-names ships CommonJS only. require("functions-have-names") works everywhere. import "functions-have-names" 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 functions-have-names with ES module syntax?

Yes. import functionsHaveNames from "functions-have-names" 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 functions-have-names work in Bun?

Yes. import "functions-have-names" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does functions-have-names ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/functions-have-names".

Links

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