tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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duplicate-proto.js (751B)

      1 // Copyright (C) 2020 devsnek. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-object-initializer-static-semantics-early-errors
      6 description: >
      7  It is a Syntax Error if PropertyNameList of PropertyDefinitionList contains
      8  any duplicate entries for "__proto__" and at least two of those entries were
      9  obtained from productions of the form
     10    PropertyDefinition : PropertyName `:` AssignmentExpression .
     11  This rule is not applied if this PropertyDefinition is contained within a
     12  Script which is being evaluated for JSON.parse (see step 4 of JSON.parse).
     13 ---*/
     14 
     15 var result = JSON.parse('{ "__proto__": 1, "__proto__": 2 }');
     16 
     17 assert.sameValue(result.__proto__, 2);
     18 
     19 reportCompare(0, 0);