| // Copyright (C) 2020 Alexey Shvayka. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-object.getownpropertydescriptors |
| description: > |
| If Proxy "ownKeys" trap is missing, keys are sorted by type in ascending |
| chronological order. |
| info: | |
| ObjectDefineProperties ( O, Properties ) |
| |
| [...] |
| 3. Let keys be ? props.[[OwnPropertyKeys]](). |
| [...] |
| 4. For each element nextKey of keys in List order, do |
| a. Let propDesc be ? props.[[GetOwnProperty]](nextKey). |
| |
| [[OwnPropertyKeys]] ( ) |
| |
| [...] |
| 6. If trap is undefined, then |
| a. Return ? target.[[OwnPropertyKeys]](). |
| |
| OrdinaryOwnPropertyKeys ( O ) |
| |
| [...] |
| 3. For each own property key P of O such that Type(P) is String and P is |
| not an array index, in ascending chronological order of property creation, do |
| a. Add P as the last element of keys. |
| 4. For each own property key P of O such that Type(P) is Symbol, |
| in ascending chronological order of property creation, do |
| a. Add P as the last element of keys. |
| 5. Return keys. |
| features: [Proxy, Symbol] |
| includes: [compareArray.js] |
| ---*/ |
| |
| var target = {}; |
| var sym = Symbol(); |
| target[sym] = 1; |
| target.foo = 2; |
| target[0] = 3; |
| |
| var getOwnKeys = []; |
| var proxy = new Proxy(target, { |
| getOwnPropertyDescriptor: function(_target, key) { |
| getOwnKeys.push(key); |
| }, |
| }); |
| |
| Object.defineProperties({}, proxy); |
| assert.compareArray(getOwnKeys, ["0", "foo", sym]); |