51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
# get-proto <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]
|
|
|
|
Robustly get the [[Prototype]] of an object. Uses the best available method.
|
|
|
|
## Getting started
|
|
|
|
```sh
|
|
npm install --save get-proto
|
|
```
|
|
|
|
## Usage/Examples
|
|
|
|
```js
|
|
const assert = require('assert');
|
|
const getProto = require('get-proto');
|
|
|
|
const a = { a: 1, b: 2, [Symbol.toStringTag]: 'foo' };
|
|
const b = { c: 3, __proto__: a };
|
|
|
|
assert.equal(getProto(b), a);
|
|
assert.equal(getProto(a), Object.prototype);
|
|
assert.equal(getProto({ __proto__: null }), null);
|
|
```
|
|
|
|
## Tests
|
|
|
|
Clone the repo, `npm install`, and run `npm test`
|
|
|
|
[package-url]: https://npmjs.org/package/get-proto
|
|
[npm-version-svg]: https://versionbadg.es/ljharb/get-proto.svg
|
|
[deps-svg]: https://david-dm.org/ljharb/get-proto.svg
|
|
[deps-url]: https://david-dm.org/ljharb/get-proto
|
|
[dev-deps-svg]: https://david-dm.org/ljharb/get-proto/dev-status.svg
|
|
[dev-deps-url]: https://david-dm.org/ljharb/get-proto#info=devDependencies
|
|
[npm-badge-png]: https://nodei.co/npm/get-proto.png?downloads=true&stars=true
|
|
[license-image]: https://img.shields.io/npm/l/get-proto.svg
|
|
[license-url]: LICENSE
|
|
[downloads-image]: https://img.shields.io/npm/dm/get-proto.svg
|
|
[downloads-url]: https://npm-stat.com/charts.html?package=get-proto
|
|
[codecov-image]: https://codecov.io/gh/ljharb/get-proto/branch/main/graphs/badge.svg
|
|
[codecov-url]: https://app.codecov.io/gh/ljharb/get-proto/
|
|
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/get-proto
|
|
[actions-url]: https://github.com/ljharb/get-proto/actions
|