tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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resolve-element-function-property-order.js (882B)

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