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- # is-data-view <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
- [![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
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