| 'use strict'; |
| |
| var GetIntrinsic = require('get-intrinsic'); |
| |
| var $TypeError = GetIntrinsic('%TypeError%'); |
| |
| var $hasInstance = GetIntrinsic('Symbol.hasInstance', true); |
| |
| var Call = require('./Call'); |
| var GetMethod = require('./GetMethod'); |
| var IsCallable = require('./IsCallable'); |
| var OrdinaryHasInstance = require('./OrdinaryHasInstance'); |
| var ToBoolean = require('./ToBoolean'); |
| var Type = require('./Type'); |
| |
| // https://ecma-international.org/ecma-262/6.0/#sec-instanceofoperator |
| |
| module.exports = function InstanceofOperator(O, C) { |
| if (Type(O) !== 'Object') { |
| throw new $TypeError('Assertion failed: Type(O) is not Object'); |
| } |
| var instOfHandler = $hasInstance ? GetMethod(C, $hasInstance) : void 0; |
| if (typeof instOfHandler !== 'undefined') { |
| return ToBoolean(Call(instOfHandler, C, [O])); |
| } |
| if (!IsCallable(C)) { |
| throw new $TypeError('`C` is not Callable'); |
| } |
| return OrdinaryHasInstance(C, O); |
| }; |