order-after-define-property.js (1374B)
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-object.values 6 description: > 7 Property names are returned in ascending chronological order of creation 8 that is unaffected by [[DefineOwnProperty]]. 9 info: | 10 Object.values ( O ) 11 12 [...] 13 2. Let nameList be ? EnumerableOwnPropertyNames(obj, value). 14 3. Return CreateArrayFromList(nameList). 15 16 EnumerableOwnPropertyNames ( O, kind ) 17 18 [...] 19 2. Let ownKeys be ? O.[[OwnPropertyKeys]](). 20 [...] 21 22 OrdinaryOwnPropertyKeys ( O ) 23 24 [...] 25 3. For each own property key P of O that is a String but is not an array index, 26 in ascending chronological order of property creation, do 27 a. Add P as the last element of keys. 28 [...] 29 5. Return keys. 30 includes: [compareArray.js] 31 ---*/ 32 33 var obj = {}; 34 Object.defineProperty(obj, "a", { 35 get: function() {}, 36 enumerable: true, 37 configurable: true, 38 }); 39 obj.b = "b"; 40 Object.defineProperty(obj, "a", { 41 get: function() { 42 return "a"; 43 }, 44 }); 45 assert.compareArray(Object.values(obj), ["a", "b"]); 46 47 var proxy = new Proxy({}, {}); 48 Object.defineProperty(proxy, "a", { 49 get: function() {}, 50 enumerable: true, 51 configurable: true, 52 }); 53 proxy.b = "b"; 54 Object.defineProperty(proxy, "a", {value: "a"}); 55 assert.compareArray(Object.values(proxy), ["a", "b"]); 56 57 reportCompare(0, 0);