An ES5 mostly-spec-compliant `Object.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible
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An ES5 mostly-spec-compliant Object.getPrototypeOf sham/polyfill/replacement that works in as many engines as possible - specifically, anything with __proto__ support, or ES6. Built-in types will also work correctly in older engines.
This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.
``js
var getPrototypeOf = require('object.getprototypeof');
var assert = require('assert');
assert.equal(getPrototypeOf(true), Boolean.prototype);
assert.equal(getPrototypeOf(42), Number.prototype);
assert.equal(getPrototypeOf(''), String.prototype);
assert.equal(getPrototypeOf(/a/g), RegExp.prototype);
assert.equal(getPrototypeOf(new Date()), Date.prototype);
assert.equal(getPrototypeOf(function () {}), Function.prototype);
assert.equal(getPrototypeOf([]), Array.prototype);
assert.equal(getPrototypeOf({}), Object.prototype);
`
`js
var getPrototypeOf = require('object.getprototypeof');
var assert = require('assert');
/ when Object.getPrototypeOf is not present /
delete Object.getPrototypeOf;
var shimmed = getPrototypeOf.shim();
assert.equal(shimmed, getPrototypeOf.getPolyfill());
assert.equal(Object.getPrototypeOf(true), Boolean.prototype);
assert.equal(Object.getPrototypeOf(42), Number.prototype);
assert.equal(Object.getPrototypeOf(''), String.prototype);
assert.equal(Object.getPrototypeOf(/a/g), RegExp.prototype);
assert.equal(Object.getPrototypeOf(new Date()), Date.prototype);
assert.equal(Object.getPrototypeOf(function () {}), Function.prototype);
assert.equal(Object.getPrototypeOf([]), Array.prototype);
assert.equal(Object.getPrototypeOf({}), Object.prototype);
`
`js`
var getPrototypeOf = require('object.getprototypeof');
var assert = require('assert');
/ when Object.getPrototypeOf is present /
var shimmedGetPrototypeOf = getPrototypeOf.shim();
assert.equal(shimmedGetPrototypeOf, Object.getPrototypeOf);
assert.equal(Object.getPrototypeOf([]), Array.prototype);
, and run npm test`[package-url]: https://npmjs.org/package/object.getprototypeof
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[dev-deps-url]: https://david-dm.org/es-shims/Object.getPrototypeOf#info=devDependencies
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[license-url]: LICENSE
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