@stdlib/assert-has-weakmap-support

Detect native WeakMap support.

Usage no npm install needed!

<script type="module">
  import stdlibAssertHasWeakmapSupport from 'https://cdn.skypack.dev/@stdlib/assert-has-weakmap-support';
</script>

README

WeakMap Support

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Detect native WeakMap support.

Installation

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

Usage

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

hasWeakMapSupport()

Detects if a runtime environment supports ES2015 WeakMap.

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

Examples

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.' );
}

CLI

Installation

To use the module as a general utility, install the module globally

npm install -g @stdlib/assert-has-weakmap-support

Usage

Usage: has-weakmap-support [options]

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.

Examples

$ has-weakmap-support
<boolean>

Notice

This package is part of 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, see the main project repository.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2022. The Stdlib Authors.