trap-is-missing-target-is-proxy.js (1032B)
1 // Copyright (C) 2020 Alexey Shvayka. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver 6 description: > 7 If "get" trap is null or undefined, [[Get]] call is properly 8 forwarded to [[ProxyTarget]] (which is also a Proxy object). 9 info: | 10 [[Get]] ( P, Receiver ) 11 12 [...] 13 5. Let target be O.[[ProxyTarget]]. 14 6. Let trap be ? GetMethod(handler, "get"). 15 7. If trap is undefined, then 16 a. Return ? target.[[Get]](P, Receiver). 17 features: [Proxy, Symbol.match] 18 ---*/ 19 20 var regExp = /(?:)/i; 21 var regExpTarget = new Proxy(regExp, {}); 22 var regExpProxy = new Proxy(regExpTarget, {}); 23 24 assert.sameValue(Object.create(regExpProxy).lastIndex, 0); 25 assert.sameValue(regExpProxy[Symbol.match], RegExp.prototype[Symbol.match]); 26 27 28 var functionTarget = new Proxy(function(_arg) {}, {}); 29 var functionProxy = new Proxy(functionTarget, {}); 30 31 assert.sameValue(Object.create(functionProxy).length, 1); 32 33 reportCompare(0, 0);