Select binding facts at reads without mixing whole-binding and temporal values. Share conditional activation rules, preserve partial expression order, and bound immutable ancestry work. Memoize temporal results within each query using initializer identity, capture point, budget and dependency proofs; preserve depth limits and source Evidence.
Fixes#3881
Track module writes and escapes at their owner, preserve capture and reassignment ordering, and share CommonJS/default namespace identity without erasing parent-slot changes. Carry write sites into ambient alias resolution and use parsed write targets across consumers. Deduplicate returned-reference work with cycle context; retain unchanged temporal selection identity so provenance memoization stays effective.
Reviewed fixes include #2041, #2465, #2830, #2881, and #2948. Remove superseded mutation representations and the ineffective per-markValue dedup layer.
Validation: 380 focused JavaScript tests passed under a 384 MiB heap cap, including the previously aborting 30-level/128-call alias regression. Six public CLI/MCP builtin tests passed. Exact pdf.js completed-workflow performance remains unmeasured.
The semantic member-mutation collector revisits the same nodes while it closes
alias chains, and each visit re-derived results that cannot change within the
phase:
- resolveSemanticBindingState re-walked the scope chain for the same identifier
node. Definition collection completes before this phase, and addBinding is
reachable only from it, so a scope's bindings no longer change.
- directInitializerPosition, directMutationPosition and
referenceInitializerPosition are pure functions of a node and the analysis
parent map, but were recomputed for every mutation and initializer.
- markValue re-encoded the same capture tuple with JSON.stringify and built a
fresh long key for every Set/Map lookup, so each lookup re-hashed the whole
key. The capture key is now cached per binding, origin and owner, and the
lifetime key is derived from it.
On pdfjs-dist 5.3.93 wasm/openjpeg_nowasm_fallback.js (462316 bytes, sha256
53c228428a8861035a34738966af263fc9d4cee6df25a0ad942af947469a0bd9) the semantic
phase takes 177.8 s instead of 272.9 s in-process, with a byte-identical
semantic IR. With --max-heap-mb 3072 and the default heap the base revision
exhausts the worker; with the default 300 s per-source deadline raised, the
completed CLI run takes 240.6 s instead of 396.7 s and its output is identical
apart from volatile identifiers.
Refs #2498
Co-authored-by: gongfpp <22683417+gongfpp@users.noreply.github.com>
* fix(javascript): preserve uncertainty after references escape to calls
* fix(javascript): track iterator root escapes and preserve static captures
* fix(javascript): scope comparison unknowns to their evidence
* fix(javascript): track parameter origins at function body entry
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Co-authored-by: morluto <76467478+morluto@users.noreply.github.com>
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