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

LCOV reporter for Mocha

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

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

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.
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

Does mocha-lcov-reporter@1.3.0 actually load? Runtime test results

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.

Runtimerequire("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 (import)

import mochaLcovReporter from "mocha-lcov-reporter";

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 mochaLcovReporter = require("mocha-lcov-reporter");

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 (6 versions; the newest 6 shown).

VersionsFormatFirst published
0.0.1 – 1.3.0CommonJSJul 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

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