Fix AbortSignal leak in ReadableStream.pipeTo with signal option (
f6528b5)
ReadableStream.prototype.pipeTo() could retain AbortSignal forever when called with a signal option and the pipe never completed, creating a 100% leak. The fix breaks the JS callback cycle by moving abort algorithms into a separately tracked list with GC visitation, and adds a regression test.
Clear pending JS exception when error formatting fails (
639bc43)
When formatting an error message itself threw a JS exception, Bun would fall back to a generic format string but leave that exception pending, causing later error throws to trip VM assertions. This commit clears the stale exception before constructing fallback error instances, fixing a crash path around Symbol.toPrimitive-driven formatting failures.
Speed up URLPattern test/exec hot paths (fe4a66e)
URLPattern.test() and exec() now use RegExp::match() directly instead of building RegExpObject/JSArray intermediates for each component. That cuts GC allocations and property-access overhead in a hot path, which should improve URLPattern-heavy routing and benchmark performance.