semanticObjectPropertyReferences scanned every property of an object
literal on each call, and member-mutation tracking calls it once per
write, so N writes to an N-property literal cost O(N^2).
For an exact string or number key, a property with another static name
only updates override bookkeeping for that other name, which the key
never reads. Index each literal once by static name, keeping spreads,
computed keys and __proto__ data entries for every key, and walk only
the relevant members in reverse source order. Wildcard and selection
keys keep the full scan.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Resolve this, private fields and super reads through receiver-aware references. Separate instance fields from prototype descriptors, preserve alternative inheritance branches and allow finite repeated getter paths.
Add domain precision regressions and compiled CLI/MCP coverage for the four reported getter shapes.
Fixes#1665
Kaoru0822