https://github.com/inspect-js/is-weakset

Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
https://github.com/inspect-js/is-weakset

collection ecmascript javascript js-weakset map set weakmap weakset

Last synced: 3 months ago
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Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

• Host: GitHub
• URL: https://github.com/inspect-js/is-weakset
• Owner: inspect-js
• License: mit
• Created: 2019-11-11T23:04:10.000Z (about 5 years ago)
• Default Branch: main
• Last Pushed: 2024-03-11T05:20:41.000Z (11 months ago)
• Last Synced: 2024-08-13T06:47:47.266Z (5 months ago)
• Topics: collection, ecmascript, javascript, js-weakset, map, set, weakmap, weakset
• Language: JavaScript
• Homepage:
• Size: 84 KB
• Stars: 3
• Watchers: 4
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# is-weakset [![Version Badge][npm-version-svg]][package-url]

[![github actions][actions-image]][actions-url]

[![coverage][codecov-image]][codecov-url]

[![License][license-image]][license-url]

[![Downloads][downloads-image]][downloads-url]

[![npm badge][npm-badge-png]][package-url]

Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

## Example

```js

var isWeakSet = require('is-weakset');

assert(!isWeakSet(function () {}));

assert(!isWeakSet(null));

assert(!isWeakSet(function* () { yield 42; return Infinity; });

assert(!isWeakSet(Symbol('foo')));

assert(!isWeakSet(1n));

assert(!isWeakSet(Object(1n)));

assert(!isWeakSet(new Set()));

assert(!isWeakSet(new WeakMap()));

assert(!isWeakSet(new Map()));

assert(isWeakSet(new WeakSet()));

class MyWeakSet extends WeakSet {}

assert(isWeakSet(new MyWeakSet()));

```

## Tests

Simply clone the repo, `npm install`, and run `npm test`

[package-url]: https://npmjs.org/package/is-weakset

[npm-version-svg]: https://versionbadg.es/inspect-js/is-weakset.svg

[deps-svg]: https://david-dm.org/inspect-js/is-weakset.svg

[deps-url]: https://david-dm.org/inspect-js/is-weakset

[dev-deps-svg]: https://david-dm.org/inspect-js/is-weakset/dev-status.svg

[dev-deps-url]: https://david-dm.org/inspect-js/is-weakset#info=devDependencies

[npm-badge-png]: https://nodei.co/npm/is-weakset.png?downloads=true&stars=true

[license-image]: https://img.shields.io/npm/l/is-weakset.svg

[license-url]: LICENSE

[downloads-image]: https://img.shields.io/npm/dm/is-weakset.svg

[downloads-url]: https://npm-stat.com/charts.html?package=is-weakset

[codecov-image]: https://codecov.io/gh/inspect-js/is-weakset/branch/main/graphs/badge.svg

[codecov-url]: https://app.codecov.io/gh/inspect-js/is-weakset/

[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-weakset

[actions-url]: https://github.com/inspect-js/is-weakset/actions