tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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static-semantics-simple-assignment.js (523B)

      1 // |reftest| error:SyntaxError
      2 
      3 // Copyright 2019 Google, Inc.  All rights reserved.
      4 // This code is governed by the BSD license found in the LICENSE file.
      5 /*---
      6 esid: prod-OptionalExpression
      7 description: >
      8  an optional expression cannot be target of assignment
      9 info: |
     10  Static Semantics: IsValidSimpleAssignmentTarget
     11    LeftHandSideExpression:
     12      OptionalExpression
     13    Return false.
     14 features: [optional-chaining]
     15 negative:
     16  phase: parse
     17  type: SyntaxError
     18 ---*/
     19 
     20 $DONOTEVALUATE();
     21 
     22 const obj = {};
     23 
     24 obj?.a = 33;