tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

duplicate-named-capturing-groups-syntax.js (637B)

      1 // Copyright 2022 Igalia, S.L. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-regexp-pattern-flags
      6 description: Runtime parsing of syntax for duplicate named capturing groups
      7 features: [regexp-duplicate-named-groups]
      8 ---*/
      9 
     10 assert.throws(
     11  SyntaxError,
     12  () => new RegExp("(?<x>a)(?<x>b)"),
     13  "Duplicate named capturing groups in the same alternative do not parse"
     14 );
     15 
     16 let source = "(?<x>a)|(?<x>b)";
     17 let parsed = new RegExp(source);
     18 assert.sameValue(parsed.source, source, "Duplicate named capturing groups in separate alternatives parse correctly");
     19 
     20 reportCompare(0, 0);