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52 lines
2.2 KiB
52 lines
2.2 KiB
2 years ago
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# object.hasown <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
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[![github actions][actions-image]][actions-url]
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[![coverage][codecov-image]][codecov-url]
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[![dependency status][deps-svg]][deps-url]
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[![dev dependency status][dev-deps-svg]][dev-deps-url]
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[![License][license-image]][license-url]
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[![Downloads][downloads-image]][downloads-url]
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[![npm badge][npm-badge-png]][package-url]
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An ES spec-compliant `Object.hasOwn` shim. Invoke its "shim" method to shim `Object.hasOwn` if it is unavailable or noncompliant.
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This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment and complies with the [spec](https://tc39.es/proposal-accessible-object-hasownproperty/).
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Most common usage:
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```js
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var assert = require('assert');
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var hasOwn = require('object.hasown');
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var obj = { a: 1, b: 2 };
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assert(hasOwn(obj, 'a'));
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assert(hasOwn(obj, 'b'));
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assert('toString' in obj && !hasOwn(obj, 'toString'));
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if (!Object.hasOwn) {
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hasOwn.shim();
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}
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assert.deepEqual(Object.hasOwn(obj, 'a'), hasOwn(obj, 'a'));
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```
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## Tests
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Simply clone the repo, `npm install`, and run `npm test`
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[package-url]: https://npmjs.com/package/object.hasown
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[npm-version-svg]: https://versionbadg.es/es-shims/Object.hasOwn.svg
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[deps-svg]: https://david-dm.org/es-shims/Object.hasOwn.svg
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[deps-url]: https://david-dm.org/es-shims/Object.hasOwn
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[dev-deps-svg]: https://david-dm.org/es-shims/Object.hasOwn/dev-status.svg
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[dev-deps-url]: https://david-dm.org/es-shims/Object.hasOwn#info=devDependencies
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[npm-badge-png]: https://nodei.co/npm/object.hasown.png?downloads=true&stars=true
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[license-image]: https://img.shields.io/npm/l/object.hasown.svg
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[license-url]: LICENSE
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[downloads-image]: https://img.shields.io/npm/dm/object.hasown.svg
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[downloads-url]: https://npm-stat.com/charts.html?package=object.hasown
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[codecov-image]: https://codecov.io/gh/es-shims/Object.hasOwn/branch/main/graphs/badge.svg
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[codecov-url]: https://app.codecov.io/gh/es-shims/Object.hasOwn/
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[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/Object.hasOwn
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[actions-url]: https://github.com/es-shims/Object.hasOwn/actions
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