Document native hover and focus CSS state
Document responsive media and CSS selector states
Describe blank-page DOM census and script quota experiment
Document real Reddit await parser unblock
Document short-circuit return awaits
Document bounded object and conditional await
Document expression await semantics and practical JS readiness
Document Promise-based await continuations and async arrows
Document bounded async function support and real-site state
Document namespace-aware DOM creation and diagnostics
Document original Object.defineProperty descriptors
Document live YouTube callsite debugging and array-object methods
Document original JS Symbol and GC-traced keys
Document navigator and UTF16 string search
Document original Math and RegExp intrinsics
Document JS shift operators and for-in RHS grammar
Document JS labeled control flow and finally semantics
Record original RegExp and modern expression first paint progress
Trace YouTube JS blockers and bounded for-in support
Document nullish and bounded for-of VM compatibility
Document original Location host and live site blockers
Sync Image constructor and real-site rendering status
Sync P0 JS delete operator and live web status
Document original JS arrow functions
Document original JavaScript template literals
Merge remote-tracking branch 'origin/master'
Sync OPBrowser architecture and page performance notes
Document native DOM reclamation and generation-safe host ownership
Document native DOM GC root fixes and measured stress limits
Document idle GC allocation headroom