https://github.com/inspect-js/is-data-view

Is this value a JS DataView? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and despite ES6 Symbol.toStringTag.
https://github.com/inspect-js/is-data-view

data dataview ecmascript javascript typedarray typedarrays view

Last synced: 11 days ago
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Is this value a JS DataView? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and despite ES6 Symbol.toStringTag.

• Host: GitHub
• URL: https://github.com/inspect-js/is-data-view
• Owner: inspect-js
• License: mit
• Created: 2024-01-31T20:38:09.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-03-11T05:00:01.000Z (8 months ago)
• Last Synced: 2024-10-25T04:09:02.662Z (22 days ago)
• Topics: data, dataview, ecmascript, javascript, typedarray, typedarrays, view
• Language: JavaScript
• Homepage:
• Size: 21.5 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# is-data-view [![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 DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

## Example

```js

var isDataView = require('is-data-view');

var assert = require('assert');

assert.equal(false, isDataView(undefined));

assert.equal(false, isDataView(null));

assert.equal(false, isDataView(false));

assert.equal(false, isDataView(true));

assert.equal(false, isDataView([]));

assert.equal(false, isDataView({}));

assert.equal(false, isDataView(/a/g));

assert.equal(false, isDataView(new RegExp('a', 'g')));

assert.equal(false, isDataView(new Date()));

assert.equal(false, isDataView(42));

assert.equal(false, isDataView(NaN));

assert.equal(false, isDataView(Infinity));

assert.equal(false, isDataView(new Number(42)));

assert.equal(false, isDataView('foo'));

assert.equal(false, isDataView(Object('foo')));

assert.equal(false, isDataView(function () {}));

assert.equal(false, isDataView(function* () {}));

assert.equal(false, isDataView(x => x * x));

assert.equal(false, isDataView([]));

assert.equal(false, isDataView(new Int8Array()));

assert.equal(false, isDataView(new Uint8Array()));

assert.equal(false, isDataView(new Uint8ClampedArray()));

assert.equal(false, isDataView(new Int16Array()));

assert.equal(false, isDataView(new Uint16Array()));

assert.equal(false, isDataView(new Int32Array()));

assert.equal(false, isDataView(new Uint32Array()));

assert.equal(false, isDataView(new Float32Array()));

assert.equal(false, isDataView(new Float64Array()));

assert.equal(false, isDataView(new BigInt64Array()));

assert.equal(false, isDataView(new BigUint64Array()));

assert.ok(isDataView(new DataView(new ArrayBuffer(0))));

```

## Tests

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

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

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

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

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

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

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

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

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

[license-url]: LICENSE

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

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

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

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

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

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