# object.hasown <sup>[![Version Badge][npm-version-svg]][package-url]</sup>

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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.

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/).

Most common usage:
```js
var assert = require('assert');
var hasOwn = require('object.hasown');

var obj = { a: 1, b: 2 };

assert(hasOwn(obj, 'a'));
assert(hasOwn(obj, 'b'));
assert('toString' in obj && !hasOwn(obj, 'toString'));

if (!Object.hasOwn) {
	hasOwn.shim();
}

assert.deepEqual(Object.hasOwn(obj, 'a'), hasOwn(obj, 'a'));
```

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

[package-url]: https://npmjs.com/package/object.hasown
[npm-version-svg]: https://versionbadg.es/es-shims/Object.hasOwn.svg
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[dev-deps-svg]: https://david-dm.org/es-shims/Object.hasOwn/dev-status.svg
[dev-deps-url]: https://david-dm.org/es-shims/Object.hasOwn#info=devDependencies
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[license-url]: LICENSE
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[actions-url]: https://github.com/es-shims/Object.hasOwn/actions