Repeated property writes to one object made member-mutation collection
cubic. Each write evaluated its target binding to rule out a primitive,
and every evaluation folded all earlier mutation paths, copying every
slot once per path. 2,000 writes to one object took 27 s and 4,000 took
203 s.
- A recorded write always leaves a non-primitive binding value, so only
the first write to a binding needs the primitive check.
- Apply mutation paths per slot in one pass with the same ordering
semantics instead of one full slot copy per path.
Co-authored-by: Claude Opus 5.5 <[email protected]>
Co-authored-by: N0zoM1z0 <[email protected]>
Fixes#1401. Refs #1065. Preserve exact member facts and equal-depth write effects while bounding the observed reassignment-loop expansion.
Validated with the JavaScript semantic/application suite, focused alias regressions, full static checks, real compiled CLI and SDK MCP Notion workflows, and all 20 checks on the final PR head.
Co-Authored-By: Marnix Pluim <[email protected]>
Co-Authored-By: N0zoM1z0 <[email protected]>
Co-Authored-By: Claude <[email protected]>
Remove forwarding wrappers and shadow aliases, migrate callers and verification scripts to their owners, and share one exhaustive semantic resource-bound projection.
Use one explicit object/array slot model and JSON-pointer property identity across mutation analysis, return projection, and semantic graphs. Require observed presence for discriminants and resolve writes only through retained object or array receivers.
BREAKING CHANGE: projected return fields require explicit presence and semantic object operations carry full property paths.
