- Keep cached native class instances callable, including inherited methods and JavaScript arguments.
- Support plain-object Proxy traps with live receivers, enumeration, and data-property invariants.
- Compile untyped addition, computed environment keys, and text-codec startup storage natively.
- Share symbol-keyed global caches across statically compiled modules.
- Preserve assignment results and evaluation order for native fields, accessors, and nullish defaults.
- Read omitted options correctly in specialized JavaScript package calls.
- Compile Unicode code-point construction, scalar iterable inputs, and primitive Buffer predicates without a JavaScript engine.
- Preserve object identity and property additions or deletions in inferred JavaScript locals.
- Recover nullable class fields initialized through static factories in bundled packages.
- Preserve nullable class fields and module callbacks in native storage with correct initialization behavior.
- Support typed-array construction, bulk copying, and in-place compaction through checked native values.
- Preserve receiver identity and evaluation order in nested field updates.
- Compile zero-argument callback fields and derived arrow replacements using their declared nullable type.
- Preserve callback captures, identity, and null resets in native class storage.
- Carry declaration-backed string, number, and boolean method results into static JavaScript compilation.
- Match named class re-exports to their implementations while preserving self types and rejecting ambiguous aliases.