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# pkg-dir [](https://travis-ci.org/sindresorhus/pkg-dir)
> Find the root directory of a npm package
## Install
```
$ npm install --save pkg-dir
```
## Usage
```
/
└── Users
└── sindresorhus
└── foo
├── package.json
└── bar
├── baz
└── example.js
```
```js
// example.js
var pkgDir = require('pkg-dir');
pkgDir(__dirname).then(function (rootPath) {
console.log(rootPath);
//=> '/Users/sindresorhus/foo'
});
```
## API
### pkgDir([cwd])
Returns a promise that resolves to the package root path or `null`.
### pkgDir.sync([cwd])
Returns the package root path or `null`.
#### cwd
Type: `string`
Default: `process.cwd()`
Directory to start from.
## Related
- [pkg-dir-cli](https://github.com/sindresorhus/pkg-dir-cli) - CLI for this module
- [find-up](https://github.com/sindresorhus/find-up) - Find a file by walking up parent directories
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)
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