RESOLVED FIXED303832
Web Inspector: Replace deprecated String.prototype.substr with substring and at for single parameters 
https://bugs.webkit.org/show_bug.cgi?id=303832
Summary Web Inspector: Replace deprecated String.prototype.substr with substring and ...
Brandon
Reported 2025-12-09 06:06:47 PST
String.prototype.substr is deprecated (Annex B) and should be replaced with modern alternatives. Using slice rather than substring because slice handles negative indices correctly, matching substr's behavior. Only handling the single parameter case, because the two parameter function calls have different syntax: String.prototype.substr ( start, length ) String.prototype.slice ( start, end )
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Radar WebKit Bug Importer
Comment 1 2025-12-09 06:06:55 PST
<rdar://problem/166140736>
Brandon
Comment 2 2025-12-09 06:08:18 PST
Pull request: https://github.com/WebKit/WebKit/pull/55106
EWS
Comment 3 2025-12-09 14:47:24 PST
Committed 304181@main (e2e6e3b758f6): <https://commits.webkit.org/304181@main> Reviewed commits have been landed. Closing PR #55106 and removing active labels.
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