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Is ci-info ESM-only? Can you require() it?

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Last verified Sep 9, 2026 against ci-info@4.4.0. Markdown · JSON

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

ci-info ships CommonJS only. require("ci-info") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=8. import "ci-info" 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("ci-info") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=8.
  2. From ES modules use the default import: import ciInfo from "ci-info"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
4.4.0 (Jan 29, 2026)
Module format
CommonJS
Last CommonJS version
4.4.0
TypeScript types
Bundled
Node engines
>=8
Weekly downloads
123.6M
License
MIT

Does ci-info@4.4.0 actually load? Runtime test results

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

Runtimerequire("ci-info")import "ci-info"
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 ci-info

ES modules (import)

import ciInfo from "ci-info";

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 ciInfo = require("ci-info");

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 (36 versions; the newest 36 shown).

VersionsFormatFirst published
1.0.0 – 4.4.0CommonJSOct 20, 2016

Frequently asked

Is ci-info ESM-only?

ci-info@4.4.0 is a CommonJS package. ci-info ships CommonJS only. require("ci-info") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=8. import "ci-info" 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 ci-info with ES module syntax?

Yes. import ciInfo from "ci-info" 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 ci-info work in Bun?

Yes. import "ci-info" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does ci-info ship TypeScript types?

Yes. ci-info bundles its own type declarations; no @types package is needed.

Links

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