npm package: @stdlib/assert-has-weakmap-support
Description: Detect native WeakMap support.
Author: The Stdlib Authors
Latest version: 0.2.3

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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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</details>

# WeakMap Support

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

> Detect native [`WeakMap`][mdn-weakmap] support.

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-has-weakmap-support
```

</section>

<section class="usage">

## Usage

```javascript
var hasWeakMapSupport = require( '@stdlib/assert-has-weakmap-support' );
```

#### hasWeakMapSupport()

Detects if a runtime environment supports ES2015 [`WeakMap`][mdn-weakmap].

```javascript
var bool = hasWeakMapSupport();
// returns <boolean>
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var hasWeakMapSupport = require( '@stdlib/assert-has-weakmap-support' );

var bool = hasWeakMapSupport();
if ( bool ) {
    console.log( 'Environment has WeakMap support.' );
} else {
    console.log( 'Environment lacks WeakMap support.' );
}
```

</section>

<!-- /.examples -->



<!-- 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/assert-has-weakmap-support-cli`][@stdlib/assert-has-weakmap-support-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</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>

<!-- /.stdlib -->

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<section class="links">

[@stdlib/assert-has-weakmap-support-cli]: https://www.npmjs.com/package/@stdlib/assert-has-weakmap-support-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-has-weakmap-support.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-has-weakmap-support

[test-image]: https://github.com/stdlib-js/assert-has-weakmap-support/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/assert-has-weakmap-support/actions/workflows/test.yml?query=branch:v0.2.3

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

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-has-weakmap-support/main/LICENSE

[mdn-weakmap]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap

</section>

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