31 lines
924 B
JavaScript
Generated
31 lines
924 B
JavaScript
Generated
'use strict';
|
|
|
|
var GetIntrinsic = require('../GetIntrinsic');
|
|
|
|
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://www.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);
|
|
};
|