# is-subdir

> Return whether a directory is a subdirectory of another directory

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Cross-platform. Works correctly on Windows, where directory paths can start with disk drive letters in different casings. Like `c:\foo` and `C:\foo\bar`.

Returns `true` when the directories match. The `isSubdir.strict()` variant only returns true if the second parameter is a strict subdir of the first and not the same.

## Installation

```sh
<npm|yarn|pnpm> add is-subdir
```

## Usage

```js
'use strict'
const path = require('path')
const isSubdir = require('is-subdir')

console.log(isSubdir(process.cwd(), path.resolve('node_modules')))
//> true
console.log(isSubdir.strict('node_modules/tape', '../tape'))
//> false
```

## API

### `isSubdir(parentDir, subdir): boolean`
### `isSubdir.strict(parentDir, subdir): boolean`

## License

[MIT](./LICENSE) © [Zoltan Kochan](https://www.kochan.io)