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# is-builtin-module [](https://travis-ci.org/sindresorhus/is-builtin-module)
> Check if a string matches the name of a Node.js builtin module
## Install
```
$ npm install --save is-builtin-module
```
## Usage
```js
var isBuiltinModule = require('is-builtin-module');
isBuiltinModule('fs');
//=> true
isBuiltinModule('unicorn');
//=> false :(
```
## Related
- [builtin-modules](https://github.com/sindresorhus/builtin-modules) - List of the Node.js builtin modules
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)