# Is mocha-lcov-reporter ESM-only? Can you require() it?

> mocha-lcov-reporter@1.3.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

LCOV reporter for Mocha

Last verified Sep 9, 2026 against mocha-lcov-reporter@1.3.0.

mocha-lcov-reporter ships CommonJS only. require("mocha-lcov-reporter") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.6.0. import "mocha-lcov-reporter" 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("mocha-lcov-reporter") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.6.0.
2. From ES modules use the default import: import mochaLcovReporter from "mocha-lcov-reporter"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for mocha-lcov-reporter; declare the module yourself if you need them.

## Facts

- Latest: 1.3.0 (Feb 21, 2017)
- Module format: CommonJS
- Last CommonJS version: 1.3.0
- TypeScript types: none
- Node engines: >= 0.6.0
- Weekly downloads: 53K
- License: BSD-2-Clause

## Runtime test results for mocha-lcov-reporter@1.3.0

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

| Runtime | require("mocha-lcov-reporter") | import "mocha-lcov-reporter" |
|---|---|---|
| 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 mocha-lcov-reporter

ES modules:

```js
import mochaLcovReporter from "mocha-lcov-reporter";
```

CommonJS:

```js
const mochaLcovReporter = require("mocha-lcov-reporter");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (6 versions; the newest 6 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.1 – 1.3.0 | CommonJS | Jul 3, 2012 |

## Frequently asked

**Is mocha-lcov-reporter ESM-only?**

mocha-lcov-reporter@1.3.0 is a CommonJS package. mocha-lcov-reporter ships CommonJS only. require("mocha-lcov-reporter") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.6.0. import "mocha-lcov-reporter" 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 mocha-lcov-reporter with ES module syntax?**

Yes. import mochaLcovReporter from "mocha-lcov-reporter" 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 mocha-lcov-reporter work in Bun?**

Yes. import "mocha-lcov-reporter" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does mocha-lcov-reporter ship TypeScript types?**

No. mocha-lcov-reporter ships no type declarations and there is no @types package for it.

## Links

- [mocha-lcov-reporter on npm](https://www.npmjs.com/package/mocha-lcov-reporter)
- [Source repository](https://github.com/StevenLooman/mocha-lcov-reporter)
- [HTML version](https://canirequire.com/package/mocha-lcov-reporter/)
- [JSON version](https://canirequire.com/package/mocha-lcov-reporter.json)

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