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- '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://262.ecma-international.org/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);
- };
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