npm package: @stdlib/os-configdir
Description: Return a directory for user-specific configuration files.
Author: The Stdlib Authors
Latest version: 0.2.4

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<details>
  <summary>
    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# configdir

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Return a directory for user-specific configuration files.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/os-configdir
```

</section>

<section class="usage">

## Usage

```javascript
var configdir = require( '@stdlib/os-configdir' );
```

#### configdir( \[path] )

Returns a directory for user-specific configuration files.

```javascript
var dir = configdir();
// e.g., returns '/Users/<username>/Library/Preferences'
```

To append a `path` to the base directory, provide a `path` argument.

```javascript
var dir = configdir( 'appname/config' );
// e.g., returns '/Users/<username>/Library/Preferences/appname/config'
```

On non-Windows platforms, if the function is unable to locate the current user's [`home`][@stdlib/os/homedir] directory, the function returns `null`. Similarly, on Windows platforms, if the function is unable to locate an application data directory, the function also returns `null`.

</section>

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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   On Windows platforms, the function first checks for a `LOCALAPPDATA` [environment variable][environment-variable-windows] before checking for an `APPDATA` [environment variable][environment-variable-windows]. This means that machine specific user configuration files have precedence over roaming user configuration files.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var configdir = require( '@stdlib/os-configdir' );

console.log( configdir( 'appy/config' ) );
```

</section>

<!-- /.examples -->



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</section>

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<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/os-configdir-cli`][@stdlib/os-configdir-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>
-   <span class="package-name">[`@stdlib/os-homedir`][@stdlib/os/homedir]</span><span class="delimiter">: </span><span class="description">return the current user's home directory.</span>
-   <span class="package-name">[`@stdlib/os-tmpdir`][@stdlib/os/tmpdir]</span><span class="delimiter">: </span><span class="description">return the directory for storing temporary files.</span>

</section>

<!-- /.related -->

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<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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<section class="links">

[@stdlib/os-configdir-cli]: https://www.npmjs.com/package/@stdlib/os-configdir-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/os-configdir.svg
[npm-url]: https://npmjs.org/package/@stdlib/os-configdir

[test-image]: https://github.com/stdlib-js/os-configdir/actions/workflows/test.yml/badge.svg?branch=v0.2.4
[test-url]: https://github.com/stdlib-js/os-configdir/actions/workflows/test.yml?query=branch:v0.2.4

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/os-configdir/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/os-configdir?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[cli-section]: https://github.com/stdlib-js/os-configdir#cli
[cli-url]: https://github.com/stdlib-js/os-configdir/tree/cli
[@stdlib/os-configdir]: https://github.com/stdlib-js/os-configdir/tree/main

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/os-configdir/tree/deno
[deno-readme]: https://github.com/stdlib-js/os-configdir/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/os-configdir/tree/umd
[umd-readme]: https://github.com/stdlib-js/os-configdir/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/os-configdir/tree/esm
[esm-readme]: https://github.com/stdlib-js/os-configdir/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/os-configdir/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/os-configdir/main/LICENSE

[environment-variable-windows]: https://en.wikipedia.org/wiki/Environment_variable#Windows

<!-- <related-links> -->

[@stdlib/os/homedir]: https://www.npmjs.com/package/@stdlib/os-homedir

[@stdlib/os/tmpdir]: https://www.npmjs.com/package/@stdlib/os-tmpdir

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</section>

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