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// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-destructuring-binding-patterns-runtime-semantics-restbindinginitialization
description: >
Proxy's "getOwnPropertyDescriptor" trap is not invoked for excluded keys.
info: |
BindingRestProperty : ... BindingIdentifier
[...]
3. Perform ? CopyDataProperties(restObj, value, excludedNames).
CopyDataProperties ( target, source, excludedItems )
[...]
5. Let keys be ? from.[[OwnPropertyKeys]]().
6. For each element nextKey of keys in List order, do
b. For each element e of excludedItems, do
i. If SameValue(e, nextKey) is true, then
1. Set excluded to true.
c. If excluded is false, then
i. Let desc be ? from.[[GetOwnProperty]](nextKey).
[[OwnPropertyKeys]] ( )
[...]
7. Let trapResultArray be ? Call(trap, handler, « target »).
8. Let trapResult be ? CreateListFromArrayLike(trapResultArray, « String, Symbol »).
[...]
23. Return trapResult.
features: [object-rest, destructuring-binding, Proxy, Symbol]
includes: [compareArray.js]
---*/
var excludedSymbol = Symbol("excluded_symbol");
var includedSymbol = Symbol("included_symbol");
var excludedKeys = [excludedSymbol, "excludedString", "0"];
var includedKeys = [includedSymbol, "includedString", "1"];
var ownKeysResult = [...excludedKeys, ...includedKeys];
var getOwnKeys = [];
var proxy = new Proxy({}, {
getOwnPropertyDescriptor: function(_target, key) {
getOwnKeys.push(key);
},
ownKeys: function() {
return ownKeysResult;
},
});
var {[excludedSymbol]: _, excludedString, 0: excludedIndex, ...rest} = proxy;
assert.compareArray(getOwnKeys, includedKeys);
reportCompare(0, 0);