| // Copyright (C) 2020 Alexey Shvayka. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-proxy-object-internal-methods-and-internal-slots-set-p-v-receiver |
| description: > |
| If "set" trap is null or undefined, [[Set]] call is properly |
| forwarded to [[ProxyTarget]] (which is also a Proxy object). |
| info: | |
| [[Set]] ( P, V, Receiver ) |
| |
| [...] |
| 5. Let target be O.[[ProxyTarget]]. |
| 6. Let trap be ? GetMethod(handler, "set"). |
| 7. If trap is undefined, then |
| a. Return ? target.[[Set]](P, V, Receiver). |
| features: [Proxy, Reflect] |
| ---*/ |
| |
| var barValue; |
| var plainObject = { |
| get foo() {}, |
| set bar(value) { |
| barValue = value; |
| }, |
| }; |
| |
| var plainObjectTarget = new Proxy(plainObject, {}); |
| var plainObjectProxy = new Proxy(plainObjectTarget, {}); |
| |
| plainObjectProxy.bar = 1; |
| assert.sameValue(barValue, 1); |
| |
| assert.throws(TypeError, function() { |
| "use strict"; |
| plainObjectProxy.foo = 2; |
| }); |
| |
| |
| var regExp = /(?:)/g; |
| var regExpTarget = new Proxy(regExp, {}); |
| var regExpProxy = new Proxy(regExpTarget, {}); |
| |
| assert(!Reflect.set(regExpProxy, "global", true)); |
| |
| regExpProxy.lastIndex = 1; |
| assert.sameValue(regExp.lastIndex, 1); |