tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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resolve-element-function-property-order.js (927B)

      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.allSettled resolve element function property order
      6 info: |
      7  Set order: "length", "name"
      8 features: [Promise.allSettled]
      9 ---*/
     10 
     11 var resolveElementFunction;
     12 var thenable = {
     13  then: function(fulfill) {
     14    resolveElementFunction = fulfill;
     15  }
     16 };
     17 
     18 function NotPromise(executor) {
     19  executor(function() {}, function() {});
     20 }
     21 NotPromise.resolve = function(v) {
     22  return v;
     23 };
     24 Promise.allSettled.call(NotPromise, [thenable]);
     25 
     26 var propNames = Object.getOwnPropertyNames(resolveElementFunction);
     27 var lengthIndex = propNames.indexOf("length");
     28 var nameIndex = propNames.indexOf("name");
     29 
     30 assert(lengthIndex >= 0 && nameIndex === lengthIndex + 1,
     31  "The `length` property comes before the `name` property on built-in functions");
     32 
     33 reportCompare(0, 0);