property-order.js (567B)
1 // Copyright (C) 2020 ExE Boss. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-createbuiltinfunction 5 description: Promise constructor property order 6 info: | 7 Set order: "length", "name", ... 8 ---*/ 9 10 var propNames = Object.getOwnPropertyNames(Promise); 11 var lengthIndex = propNames.indexOf("length"); 12 var nameIndex = propNames.indexOf("name"); 13 14 assert(lengthIndex >= 0 && nameIndex === lengthIndex + 1, 15 "The `length` property comes before the `name` property on built-in functions"); 16 17 reportCompare(0, 0);