main repo

node_modules/es-abstract/2019/OrdinaryHasInstance.js

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+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+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;
+};