npm package: @stdlib/namespace-pkg2alias
Description: Return the alias associated with a specified package name.
Author: The Stdlib Authors
Latest version: 0.4.1

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<details>
  <summary>
    About stdlib...
  </summary>
  <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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</details>

# pkg2alias

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

> Return the alias associated with a specified package name.

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

<!-- /.intro -->

<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/namespace-pkg2alias
```

</section>

<section class="usage">

## Usage

```javascript
var pkg2alias = require( '@stdlib/namespace-pkg2alias' );
```

#### pkg2alias( pkg )

Returns the alias associated with a specified package name.

```javascript
var v = pkg2alias( '@stdlib/math-base-special-sin' );
// returns 'base.sin'
```

If provided an unrecognized `pkg`, the function returns `null`.

```javascript
var v = pkg2alias( 'unrecognized_pkg_beep_boop_bop_bip' );
// returns null
```

</section>

<!-- /.usage -->

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

<section class="notes">

## Notes

-   The function supports providing both internal and standalone package names.

    ```javascript
    var v = pkg2alias( '@stdlib/math-base-special-sin' );
    // returns 'base.sin'
    ```

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- TODO: better example -->

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

```javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var aliases = require( '@stdlib/namespace-aliases' );
var alias2pkg = require( '@stdlib/namespace-alias2pkg' );
var pkg2alias = require( '@stdlib/namespace-pkg2alias' );

var list;
var len;
var idx;
var v1;
var v2;
var i;

list = aliases();
len = list.length;

// Round-trip from alias-to-pkg-to-alias...
for ( i = 0; i < 100; i++ ) {
    idx = discreteUniform( 0, len-1 );
    v1 = alias2pkg( list[ idx ] );
    v2 = pkg2alias( v1 );
    console.log( 'alias: %s. pkg: %s.', list[ idx ], v1 );
    console.log( 'pkg: %s. alias: %s.', v1, v2 );
}
```

</section>

<!-- /.examples -->

<!-- Section for describing a command-line interface. -->



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</section>

<!-- /.references -->

<!-- <license> -->

## License

The data files (databases) are licensed under an [Open Data Commons Public Domain Dedication & License 1.0][pddl-1.0] and their contents are licensed under [Creative Commons Zero v1.0 Universal][cc0]. The software is licensed under [Apache License, Version 2.0][apache-license].

<!-- </license> -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/namespace-pkg2alias-cli`][@stdlib/namespace-pkg2alias-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>
-   <span class="package-name">[`@stdlib/namespace-alias2pkg`][@stdlib/namespace/alias2pkg]</span><span class="delimiter">: </span><span class="description">return the package name associated with a specified alias.</span>
-   <span class="package-name">[`@stdlib/namespace-aliases`][@stdlib/namespace/aliases]</span><span class="delimiter">: </span><span class="description">standard library aliases.</span>
-   <span class="package-name">[`@stdlib/namespace-pkg2related`][@stdlib/namespace/pkg2related]</span><span class="delimiter">: </span><span class="description">return package names related to a specified package name.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<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]

---

## Copyright

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

</section>

<!-- /.stdlib -->

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<section class="links">

[@stdlib/namespace-pkg2alias-cli]: https://www.npmjs.com/package/@stdlib/namespace-pkg2alias-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/namespace-pkg2alias.svg
[npm-url]: https://npmjs.org/package/@stdlib/namespace-pkg2alias

[test-image]: https://github.com/stdlib-js/namespace-pkg2alias/actions/workflows/test.yml/badge.svg?branch=v0.4.1
[test-url]: https://github.com/stdlib-js/namespace-pkg2alias/actions/workflows/test.yml?query=branch:v0.4.1

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/namespace-pkg2alias/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/namespace-pkg2alias?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/namespace-pkg2alias#cli
[cli-url]: https://github.com/stdlib-js/namespace-pkg2alias/tree/cli
[@stdlib/namespace-pkg2alias]: https://github.com/stdlib-js/namespace-pkg2alias/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/namespace-pkg2alias/tree/deno
[deno-readme]: https://github.com/stdlib-js/namespace-pkg2alias/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/namespace-pkg2alias/tree/umd
[umd-readme]: https://github.com/stdlib-js/namespace-pkg2alias/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/namespace-pkg2alias/tree/esm
[esm-readme]: https://github.com/stdlib-js/namespace-pkg2alias/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/namespace-pkg2alias/blob/main/branches.md

[pddl-1.0]: http://opendatacommons.org/licenses/pddl/1.0/

[cc0]: https://creativecommons.org/publicdomain/zero/1.0

[apache-license]: https://www.apache.org/licenses/LICENSE-2.0

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

[@stdlib/namespace/alias2pkg]: https://www.npmjs.com/package/@stdlib/namespace-alias2pkg

[@stdlib/namespace/aliases]: https://www.npmjs.com/package/@stdlib/namespace-aliases

[@stdlib/namespace/pkg2related]: https://www.npmjs.com/package/@stdlib/namespace-pkg2related

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</section>

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