package.2016.OrdinaryHasInstance.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of es-abstract Show documentation

ECMAScript spec abstract operations.

There is a newer version: 1.22.3

'use strict';

var GetIntrinsic = require('get-intrinsic');

var $TypeError = GetIntrinsic('%TypeError%');

var Get = require('./Get');
var IsCallable = require('./IsCallable');
var Type = require('./Type');

// https://262.ecma-international.org/6.0/#sec-ordinaryhasinstance

module.exports = function OrdinaryHasInstance(C, O) {
	if (!IsCallable(C)) {
		return false;
	}
	if (Type(O) !== 'Object') {
		return false;
	}
	var P = Get(C, 'prototype');
	if (Type(P) !== 'Object') {
		throw new $TypeError('OrdinaryHasInstance called on an object with an invalid prototype property.');
	}
	return O instanceof C;
};