Closed
Bug 1764955
Opened 3 years ago
Closed 3 years ago
RegExp.test console evaluation preview mutating RegExp.lastIndex
Categories
(DevTools :: Console, defect)
Tracking
(Not tracked)
RESOLVED
DUPLICATE
of bug 1609429
People
(Reporter: luke.49, Unassigned)
Details
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0
Steps to reproduce:
Typed into console:
const re = new RegExp('a', 'g');
const str = "cake";
re.test(str);
Actual results:
The evaluation preview displayed true, then executing it returned false (since the preview moved the lastIndex pointer past the first match).
Expected results:
Either no preview should be given, or a preview which does not mutate the RegExp until it is actually evaluated.
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Comment 1•3 years ago
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The Bugbug bot thinks this bug should belong to the 'DevTools::Console' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.
Component: Untriaged → Console
Product: Firefox → DevTools
Status: UNCONFIRMED → RESOLVED
Closed: 3 years ago
Resolution: --- → DUPLICATE
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Description
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