trap-is-missing-target-is-proxy.js

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// 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-get-p-receiver

description: >

  If "get" trap is null or undefined, [[Get]] call is properly

  forwarded to [[ProxyTarget]] (which is also a Proxy object).

info: |

  [[Get]] ( P, Receiver )

  [...]

  5. Let target be O.[[ProxyTarget]].

  6. Let trap be ? GetMethod(handler, "get").

  7. If trap is undefined, then

    a. Return ? target.[[Get]](P, Receiver).

features: [Proxy, Symbol.match]

---*/

var regExp = /(?:)/i;

var regExpTarget = new Proxy(regExp, {});

var regExpProxy = new Proxy(regExpTarget, {});

assert.sameValue(Object.create(regExpProxy).lastIndex, 0);

assert.sameValue(regExpProxy[Symbol.match], RegExp.prototype[Symbol.match]);

var functionTarget = new Proxy(function(_arg) {}, {});

var functionProxy = new Proxy(functionTarget, {});

assert.sameValue(Object.create(functionProxy).length, 1);

reportCompare(0, 0);