canirequire › CommonJS › codecov
Is codecov ESM-only? Can you require() it?
Uploading report to Codecov: https://codecov.io
Last verified Sep 9, 2026 against codecov@3.8.3. JSON
CommonJS CommonJS — require() works on every Node.js version
codecov ships CommonJS only. require("codecov") works everywhere. import "codecov" 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.
Deprecated: https://about.codecov.io/blog/codecov-uploader-deprecation-plan/
Does codecov@3.8.3 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("codecov") from a CommonJS file and import "codecov" from an ES module.
| Runtime | require("codecov") | import "codecov" |
|---|---|---|
| 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 codecov
ES modules (import)
import codecov from "codecov";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 codecov = require("codecov");Module format by version
Derived from the type, main and exports fields of every stable release on npm (32 versions; the newest 32 shown).
| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 3.8.3 | CommonJS | Oct 16, 2015 |
Frequently asked
Is codecov ESM-only?
codecov@3.8.3 is a CommonJS package. codecov ships CommonJS only. require("codecov") works everywhere. import "codecov" 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 codecov with ES module syntax?
Yes. import codecov from "codecov" 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 codecov work in Bun?
Yes. import "codecov" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does codecov ship TypeScript types?
No. codecov ships no type declarations and there is no @types package for it.
Links
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