# Is @bcoe/v8-coverage ESM-only? Can you require() it?

> @bcoe/v8-coverage@1.0.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Helper functions for V8 coverage files.

Last verified Sep 9, 2026 against @bcoe/v8-coverage@1.0.2.

@bcoe/v8-coverage ships CommonJS only. require("@bcoe/v8-coverage") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=18. import "@bcoe/v8-coverage" 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("@bcoe/v8-coverage") 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 v8Coverage from "@bcoe/v8-coverage"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for @bcoe/v8-coverage; declare the module yourself if you need them.

## Facts

- Latest: 1.0.2 (Jan 15, 2025)
- Module format: CommonJS
- Last CommonJS version: 1.0.2
- TypeScript types: none
- Node engines: >=18
- Weekly downloads: 54.2M
- License: MIT

## Runtime test results for @bcoe/v8-coverage@1.0.2

Installed and executed on Sep 9, 2026 with require("@bcoe/v8-coverage") from a CommonJS file and import "@bcoe/v8-coverage" from an ES module.

| Runtime | require("@bcoe/v8-coverage") | import "@bcoe/v8-coverage" |
|---|---|---|
| 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 @bcoe/v8-coverage

ES modules:

```js
import v8Coverage from "@bcoe/v8-coverage";
```

CommonJS:

```js
const v8Coverage = require("@bcoe/v8-coverage");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (8 versions; the newest 8 shown).

| Versions | Format | First published |
|---|---|---|
| 0.1.0 – 1.0.2 | CommonJS | Jan 20, 2019 |

## Frequently asked

**Is @bcoe/v8-coverage ESM-only?**

@bcoe/v8-coverage@1.0.2 is a CommonJS package. @bcoe/v8-coverage ships CommonJS only. require("@bcoe/v8-coverage") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=18. import "@bcoe/v8-coverage" 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 @bcoe/v8-coverage with ES module syntax?**

Yes. import v8Coverage from "@bcoe/v8-coverage" 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 @bcoe/v8-coverage work in Bun?**

Yes. import "@bcoe/v8-coverage" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @bcoe/v8-coverage ship TypeScript types?**

No. @bcoe/v8-coverage ships no type declarations and there is no @types package for it.

## Links

- [@bcoe/v8-coverage on npm](https://www.npmjs.com/package/@bcoe/v8-coverage)
- [Source repository](https://github.com/bcoe/v8-coverage)
- [HTML version](https://canirequire.com/package/@bcoe/v8-coverage/)
- [JSON version](https://canirequire.com/package/@bcoe/v8-coverage.json)

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