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

A code coverage tool for ES6 (babel)

Last verified Sep 9, 2026 against isparta@4.1.1. JSON

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

isparta ships CommonJS only. require("isparta") works everywhere. import "isparta" 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
4.1.1 (Dec 19, 2018)
Module format
CommonJS
Last CommonJS version
4.1.1
TypeScript types
None
Node engines
not declared
Weekly downloads
17K
License
WTFPL

Does isparta@4.1.1 actually load? Runtime test results

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

Runtimerequire("isparta")import "isparta"
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 isparta

ES modules (import)

import isparta from "isparta";

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 isparta = require("isparta");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (35 versions; the newest 35 shown).

VersionsFormatFirst published
0.1.0 – 4.1.1CommonJSNov 17, 2014

Frequently asked

Is isparta ESM-only?

isparta@4.1.1 is a CommonJS package. isparta ships CommonJS only. require("isparta") works everywhere. import "isparta" 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 isparta with ES module syntax?

Yes. import isparta from "isparta" 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 isparta work in Bun?

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

Does isparta ship TypeScript types?

No. isparta ships no type declarations and there is no @types package for it.

Links

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