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Is babel-plugin-istanbul ESM-only? Can you require() it?

A babel plugin that adds istanbul instrumentation to ES6 code

Last verified Sep 9, 2026 against babel-plugin-istanbul@8.0.0. Markdown · JSON

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

babel-plugin-istanbul ships CommonJS only. require("babel-plugin-istanbul") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=18. import "babel-plugin-istanbul" 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.

What to do

  1. require("babel-plugin-istanbul") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=18.
  2. From ES modules use the default import: import babelPluginIstanbul from "babel-plugin-istanbul"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: no types are available for babel-plugin-istanbul; declare the module yourself if you need them.
Latest
8.0.0 (Apr 9, 2026)
Module format
CommonJS
Last CommonJS version
8.0.0
TypeScript types
None
Node engines
>=18
Weekly downloads
50.0M
License
BSD-3-Clause

Does babel-plugin-istanbul@8.0.0 actually load? Runtime test results

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

Runtimerequire("babel-plugin-istanbul")import "babel-plugin-istanbul"
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 babel-plugin-istanbul

ES modules (import)

import babelPluginIstanbul from "babel-plugin-istanbul";

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 babelPluginIstanbul = require("babel-plugin-istanbul");

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 (33 versions; the newest 33 shown).

VersionsFormatFirst published
1.0.0 – 8.0.2CommonJSJun 28, 2016

Frequently asked

Is babel-plugin-istanbul ESM-only?

babel-plugin-istanbul@8.0.0 is a CommonJS package. babel-plugin-istanbul ships CommonJS only. require("babel-plugin-istanbul") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=18. import "babel-plugin-istanbul" 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 babel-plugin-istanbul with ES module syntax?

Yes. import babelPluginIstanbul from "babel-plugin-istanbul" 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 babel-plugin-istanbul work in Bun?

Yes. import "babel-plugin-istanbul" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does babel-plugin-istanbul ship TypeScript types?

No. babel-plugin-istanbul ships no type declarations and there is no @types package for it.

Links

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