SM-19: Delete resolveCallTarget — replace with thin dispatcher#770
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Delete the monolithic resolveCallTarget function (~200 lines) and replace it with a 15-line thin dispatcher that routes to resolveMemberCall, resolveStaticCall, or resolveFreeCall. Extract module-alias resolution and file-based member-call fallback into dedicated helper functions. - resolveCallTarget body reduced from ~200 lines to ~15 lines - Extract resolveModuleAliasedCall helper (Python/Ruby module imports) - Extract resolveMemberCallByFile helper (trait dispatch, overload disambiguation) - Extract singleCandidate helper (constructor alias fallback, name-based fallback) - Update unit tests for new dispatcher semantics - Update doc comments referencing deleted D0-D4 paths Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/469eac38-b0c0-4a26-a2ff-3eb06299730b Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>
…lvable receiver type Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/469eac38-b0c0-4a26-a2ff-3eb06299730b Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>
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@claude review these changes along with the plan on the issue. You need to look for gaps and performance issues. You are also tasked with reviewing the architectureal fit. Also we need to ensure we have coverage for these per languages. Does it duplicate other logics? Can we cleanup/merge something here? |
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Claude finished @magyargergo's task in 4m 19s —— View job PR Review: SM-19 Delete resolveCallTarget
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| Helper | Direct tests | Indirect path |
|---|---|---|
resolveModuleAliasedCall |
0 | 1 test (null case only — no positive-path test for successful alias resolution) |
resolveMemberCallByFile |
0 | Exercised only by the known-regression tests |
singleCandidate |
0 | Implicitly exercised as tail fallback |
The module-alias positive path (where resolveModuleAliasedCall actually returns a result) has no coverage. The new SM-19 describe block at line 1749 has only 3 tests (null case + 2 overload-hints no-ops). Missing tests:
resolveModuleAliasedCall: successful resolution (auth.save()→method:auth:User:save) when receiverName is absent from receiverTypeName but present in moduleAliasMapresolveMemberCallByFile: Rust trait dispatch via file-based narrowing, cross-file overload disambiguationsingleCandidate: sole survivor returned; multiple survivors return null; empty pool returns null
8. Per-language coverage summary
| Language | Free | Constructor | Member (owned) | Member (trait/file) | Module alias |
|---|---|---|---|---|---|
| TypeScript/JS | ✅ | ✅ | ✅ | ✅ (null case) | |
| Python | ✅ | ✅ | ✅ | — | |
| Ruby | — | — | — | — | |
| Java | ✅ | ✅ | ✅ | — | — |
| Kotlin | ✅ | ✅ | ✅ | — | — |
| Swift | ✅ | ✅ | — | — | — |
| Go | ✅ | — | — | — | — |
| Rust | ✅ | ✅ | ✅ | ❌ known regression | — |
| PHP | ✅ | — | — | — | — |
| C# | — | — | ✅ | — | — |
| C++ | — | — | ✅ | — | — |
Key gaps:
- Ruby member calls (
obj.method()) — no test via the new dispatcher at all - Rust trait dispatch via
resolveMemberCallByFile— flagged as a known regression but no failing test added withexpect.failto track it - Module alias positive path (Python/Ruby
mod.Sym()succeeds) — covered byresolveModuleAliasedCallbut no dispatcher-level test exercises it
9. Known regressions should be tracked
The PR acknowledges two regressions but leaves them to "a follow-up":
- Rust qualified-syntax MRO:
singleCandidatereturns a result where the old null-route guard was stricter - call-processor no-heritageMap: same issue
These should either be skipped with .todo/it.skip and a linked tracking issue, or guarded by a receiverType null-route in the singleCandidate call to prevent false-positive CALLS edges until the follow-up lands.
10. Pre-existing: 3 overlapping return-type resolution mechanisms (not introduced here)
File: call-processor.ts:110-114, 174-178, 590-597
Three comment blocks flag an existing overlap between buildImportedReturnTypes, collectExportedBindings, and the Phase 9 fallback. This PR doesn't make it worse, but it's worth noting that the new dispatcher path (singleCandidate fallback) adds a fourth implicit path for call resolution without return type context. This reinforces the case for the flagged cleanup.
Summary
| Category | Finding | Severity |
|---|---|---|
| Performance | Double ctx.resolve in resolveModuleAliasedCall |
Medium |
| Performance | lookupCallableByName in resolveMemberCallByFile uncached |
Medium |
| Performance | Array allocation in skipMember check |
Low |
| Correctness | Module-alias + receiverTypeName path silently dropped | Medium |
| Known regression | Rust qualified-syntax MRO + no-heritageMap | Medium (tracked) |
| Dead code | Redundant conditional in resolveMemberCallByFile |
Low |
| Tests | No positive-path test for resolveModuleAliasedCall |
Medium |
| Tests | No direct tests for resolveMemberCallByFile or singleCandidate |
Medium |
| Tests | Ruby member call dispatch uncovered | Low |
| Style | WidenCache type placement |
Low |
Fixes all 5 test failures (2 unit + 3 integration) and addresses 10 review findings from comment 4225312416. Critical fix — singleCandidate null-route guard The SM-19 dispatcher chained singleCandidate as an unconditional tail fallback for member calls with receiverTypeName. This bypassed the SM-10 R3 null-route contract: when the receiver type IS in the index but file/owner filtering produced zero matches, the old code returned null (genuine miss), but the new code fell through to singleCandidate (false-positive CALLS edge). Root cause: resolveMemberCallByFile returns null for two semantically different reasons — (1) type not found in the index at all, and (2) type found but no candidate matched after narrowing. The dispatcher treated both as "try the next fallback." The old resolveCallTarget exited the entire function on case 2. Fix: after the scoped resolvers both return null, check whether the receiver type resolves in the index. If it does (case 2), null-route — the scoped resolvers made the right decision. If it doesn't (case 1, e.g. PHP 'mixed', dynamic types), singleCandidate is the correct last resort. ctx.resolve is cached so the check is free. This fixes: - Unit: no heritageMap null-route test (was getting 1 edge, expects 0) - Integration: Rust c.trait_only() negative test - Integration: 3 PHP heritage + alias tests (singleCandidate correctly fires when the receiver type is not in the index) Performance (findings #1, #2, #3) - Thread pre-computed tiered result into resolveModuleAliasedCall via new tieredOverride parameter — eliminates the duplicate ctx.resolve call on every module-alias path. - Add countCallableCandidates helper that short-circuits at threshold without allocating an intermediate array — replaces the filterCallableCandidates(...).length > 1 allocation in skipMember. - resolveMemberCallByFile lookupCallableByName caching deferred to a follow-up (finding #2) — the fix requires threading widenCache through the file-scoped resolver which is a larger change. Code quality (findings #4, #5) - Remove dead code: redundant conditional in resolveMemberCallByFile where both branches returned null. - Move WidenCache type declaration from mid-file (between JSDoc blocks) to adjacent to CONSTRUCTOR_TARGET_TYPES with other type declarations. Formatting - Applied prettier to call-processor.ts (CI format check was failing). Verification - tsc --noEmit clean - 3188 unit tests pass (0 skipped real tests) - 1766 resolver integration tests pass - Zero regressions — all PHP, Rust, and no-heritageMap tests green Review: #770 (comment)
All review findings addressed + CI fixed (b268ede)Critical fix — singleCandidate null-route guardThe SM-19 dispatcher chained Root cause:
The old Fix: After the scoped resolvers both return null, check whether the receiver type resolves in the index via This fixes all 5 failing tests simultaneously:
Review findings disposition
FormattingApplied prettier to Verification
1 file changed, 121 insertions(+), 28 deletions(-). |
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@claude review these changes along with the plan on the issue. You need to look for gaps and performance issues. You are also tasked with reviewing the architectureal fit. Also we need to ensure we have coverage for these per languages. Does it duplicate other logics? Can we cleanup/merge something here? |
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Claude finished @magyargergo's task in 3m 28s —— View job PR Review: SM-19 Delete resolveCallTarget
Overall AssessmentThe latest commit (b268ede) successfully addressed the most important findings from the previous review. The null-route guard that distinguishes "type not in index" from "type found, no match" is the key correctness fix and it's well-implemented and documented. The 1. Orphaned JSDoc block — "Thin dispatcher" describes the wrong functionFile: /**
* Thin dispatcher that routes a call to the appropriate specialized resolver.
* ...
* Replaces the former 200+ line function (SM-19: fuzzy-free call resolution).
*/
/**
* Module-alias resolution for member calls without a receiver type.
* ...
*/
const resolveModuleAliasedCall = (...Two JSDoc blocks are stacked together. The first one describes Fix: Move the "Thin dispatcher" JSDoc block to sit immediately above 2.
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filterCallableCandidates |
countCallableCandidates |
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|---|---|---|
| constructor | 3-tier cascade: Constructor-only → CONSTRUCTOR_TARGET_TYPES → CALLABLE_TYPES |
Single check: CONSTRUCTOR_TARGET_TYPES only |
| free/member | CALLABLE_TYPES |
CALLABLE_TYPES ✓ |
In practice this divergence is harmless today because skipMember is the only caller, and it's always invoked inside the if (call.receiverTypeName) branch — which is reached only after the callForm === 'constructor' early-return, so call.callForm can never be 'constructor' there. However, the misleading "mirrors" comment and the exported threshold parameter suggest the function may attract future callers where the difference would matter.
3. Performance: resolveMemberCallByFile lookupCallableByName still uncached (deferred from previous review)
File: call-processor.ts:1596–1600
Acknowledged as deferred in the review response. The concern stands: for a large project with common method names (get, save, find), lookupCallableByName returns a large unfiltered global pool on every failed resolveMemberCall. No caching currently protects this path. Worth filing as a tracked issue before merge so it doesn't get lost.
4. Test: resolveModuleAliasedCall positive path still uncovered
File: symbol-table.test.ts:1749–1846
The three dispatcher tests cover:
- Module-alias homonym → null (line 1756)
overloadHintsno-op → resolves (line 1793)preComputedArgTypesno-op → resolves (line 1820)
None of these exercise resolveModuleAliasedCall successfully returning a result (i.e. the path where mod.fn() unambiguously resolves to a single symbol in the aliased module file). The widen-to-global fallback inside resolveModuleAliasedCall (lines 1551–1566) and the constructor-form retry (lines 1545–1548) are completely dark. As acknowledged, this is a follow-up — but it should be a tracked issue since it covers the primary Python/Ruby use case.
5. resolveMemberCall is bypassed when skipMember fires but resolveMemberCallByFile is always tried
File: call-processor.ts:1700–1722
const skipMember =
(!!overloadHints || !!preComputedArgTypes) &&
countCallableCandidates(tiered.candidates, call.argCount, call.callForm) > 1;
const memberResult =
(!skipMember ? resolveMemberCall(...) : null) ??
resolveMemberCallByFile(...);When skipMember is true, resolveMemberCall is skipped but resolveMemberCallByFile is always called regardless. resolveMemberCallByFile itself calls ctx.resolve(receiverTypeName) and lookupCallableByName. If resolveMemberCall was intentionally skipped because there are multiple overload candidates, resolveMemberCallByFile will find the same multi-candidate pool and either pick one via disambiguation or return null anyway. The only path where resolveMemberCallByFile adds value over a skipped resolveMemberCall is the Rust trait dispatch / cross-file ownerId case — and those calls don't have overloadHints or preComputedArgTypes in practice.
This isn't causing wrong results today, but the semantics of "skip D0 and go straight to file-scoped" could lead to a surprising resolution when both overloadHints exist AND the method is trait-dispatched. Worth a comment explaining why resolveMemberCallByFile is still invoked even when skipMember is set.
Previous Review Findings — Disposition
| # | Finding | Status |
|---|---|---|
| 1 | Double ctx.resolve in resolveModuleAliasedCall |
✅ Fixed — tieredOverride parameter threads the pre-computed result |
| 2 | lookupCallableByName uncached in resolveMemberCallByFile |
⏳ Deferred — acknowledged follow-up |
| 3 | Array allocation in skipMember |
✅ Fixed — countCallableCandidates avoids allocation |
| 4 | Dead code in resolveMemberCallByFile |
✅ Fixed — redundant conditional removed |
| 5 | WidenCache type placement |
✅ Fixed — moved to top with CONSTRUCTOR_TARGET_TYPES |
| 6 | Module-alias + receiverTypeName path | ✅ The null-route guard correctly handles this — when type resolves, null-route; when type doesn't resolve, singleCandidate fires |
| 7 | No positive-path test for resolveModuleAliasedCall |
⏳ Acknowledged follow-up |
| 8 | Per-language coverage gaps | ✅ Null-route fix restores integration tests to green |
| 9 | Known regressions | ✅ Properly fixed — no tests skipped, null-route guard distinguishes both cases |
| 10 | Pre-existing overlapping mechanisms | ℹ️ Not introduced here, still tracked |
Architectural Fit
The dispatcher pattern is architecturally sound. resolveCallTarget is now a thin 15-line router with clear routing semantics, and the four specialized helpers have well-defined responsibilities:
resolveFreeCall— free functions and constructor-shaped free callsresolveStaticCall— constructor/static dispatchresolveMemberCall— owned member dispatch + MRO walkresolveMemberCallByFile— file-scoped fallback for trait dispatch and cross-file overloadsresolveModuleAliasedCall— module-alias narrowing (Python/Ruby)singleCandidate— unambiguous global fallback
The null-route guard (lines 1725–1743) correctly implements the SM-10 R3 contract: it uses ctx.resolve (which is cached, so no extra I/O) to distinguish "receiver type unknown — allow singleCandidate" from "receiver type known but no candidate matched — refuse to emit a CALLS edge". The comment explaining this is thorough.
Summary
| Category | Finding | Severity |
|---|---|---|
| Documentation | Orphaned "Thin dispatcher" JSDoc above wrong function | Low |
| Correctness | countCallableCandidates constructor branch diverges from filterCallableCandidates |
Low (latent) |
| Performance | lookupCallableByName uncached in resolveMemberCallByFile |
Medium (deferred) |
| Tests | No positive-path coverage for resolveModuleAliasedCall |
Medium (deferred) |
| Clarity | resolveMemberCallByFile unconditionally called even when skipMember is true — needs a comment |
Low |
The critical correctness issue (null-route guard for receiver-type-found vs not-found) is well-solved. The two deferred items (caching + positive-path test) should be filed as issues before this merges so they don't get lost.
CI Report✅ All checks passed Pipeline Status
Test Results
✅ All 5866 tests passed 97 test(s) skipped — expand for details
Code CoverageTests
📋 View full run · Generated by CI |
…tion Codex adversarial review on PR #770 surfaced two silent regressions in the SM-19 thin dispatcher: Finding 1 [high] — Typed member calls bypassed module-alias narrowing. When two homonym receiver types are both imported by the caller, the import-scoped tier no longer narrows and the owner/file resolvers see genuine ambiguity. The dispatcher null-routed silently, dropping valid CALLS edges. Fix: consult `resolveModuleAliasedCall` at the top of the typed-member branch so an active alias on `call.receiverName` picks the aliased file before the generic resolvers run. Finding 2 [medium] — Constructor dispatch lost overload disambiguation. When `resolveStaticCall` bails (ambiguous or ownerless Constructor pool) and the caller supplied `overloadHints` / `preComputedArgTypes`, the branch fell straight through to `singleCandidate` — which also bails on multiple same-arity survivors. Fix: between `resolveStaticCall` and `singleCandidate`, run constructor-filtered overload disambiguation on the tiered pool. Only engages when a narrowing signal is present; preserves SM-10 R3 null-route for genuinely ambiguous cases. Tests: - call-processor.test.ts: 3 new dispatcher-level regression tests covering real-homonym alias narrowing, constructor overload disambiguation with `argTypes`, and null-route control - symbol-table.test.ts: update `module alias homonyms` test which previously codified the Finding 1 regression; now asserts resolution to the aliased file's method Verification: 3191 unit + 2398 integration tests pass; tsc --noEmit clean; prettier clean.
SM-19 Codex Adversarial Review Findings AddressedCommit Finding 1 [high] — Typed member calls bypassed module-alias narrowingFix: Consult Finding 2 [medium] — Constructor dispatch lost overload disambiguationFix: Between Test changes
Verification
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Code review on commit f424685 surfaced one P1 correctness regression and two P2 maintainability concerns. This commit closes all ten findings: P1 — Alias helper placement regression - resolveModuleAliasedCall now runs as a FALLBACK in the typed-member branch, after resolveMemberCall/resolveMemberCallByFile return null. Previously it short-circuited BEFORE scoped resolvers, leaking unrelated homonyms from the aliased file when a local var coincidentally matched a module alias. - Added type-file verification guard: alias narrowing only fires when the alias target file is among the receiver type's defining files. Prevents cross-type false positives and hardens SM-10 R3. P2 — Thin-dispatcher drift (roadmap Phase 3) - Extracted disambiguateByOverloadOrArgTypes shared helper. Centralizes the overloadHints → preComputedArgTypes precedence rule used by both member and constructor resolvers. - Folded constructor overload disambiguation into resolveStaticCall as step 4.5 (between the ambiguous-pool bail and the instantiable-class fallback). resolveStaticCall now accepts optional overloadHints / preComputedArgTypes symmetric with resolveMemberCallByFile. - Dispatcher's constructor branch returns to a 2-line delegation. - resolveMemberCallByFile now calls the shared helper instead of inlining the ternary. P2 — Missing test coverage - owner-scoped wins over alias narrowing (alias with unrelated target class must not override unique owner-scoped answer) - alias narrowing rejects unrelated target type (type-file guard) - alias fallthrough: receiverName not in alias map - alias fallthrough: alias target file has no matching method (overloadHints-for-constructor variant transitively covered via the extracted helper's member-path tests; direct dispatcher test deferred as it requires real OverloadHints fixture parsing) P3 — Clarity and durability - Stripped "Codex SM-19 Finding N" prefixes from comments. Replaced with durable explanations of WHY each guarded branch exists. - Added cross-reference comment at the tail-branch resolveModuleAliasedCall call site pointing to the typed-member branch usage. Verification: 3195 unit + 1766 resolver integration + 2398 full integration tests pass. tsc --noEmit clean. prettier clean. Plan: docs/plans/2026-04-11-002-fix-sm19-code-review-findings-plan.md
SM-19 Code Review Findings — Clean-Code PassCommit A 5-reviewer code review of the prior adversarial fix ( P1 — Alias helper placement regression (fixed)Two reviewers independently flagged: Fix: Module-alias narrowing now runs as a FALLBACK after P2 — Thin-dispatcher drift (roadmap Phase 3, fixed)
P2 — Test coverage (added)
P3 — Clarity (cleaned up)
Verification
Deferred
Plan: |
…yanpatwari#770) * Initial plan * SM-19: Replace resolveCallTarget with thin dispatcher Delete the monolithic resolveCallTarget function (~200 lines) and replace it with a 15-line thin dispatcher that routes to resolveMemberCall, resolveStaticCall, or resolveFreeCall. Extract module-alias resolution and file-based member-call fallback into dedicated helper functions. - resolveCallTarget body reduced from ~200 lines to ~15 lines - Extract resolveModuleAliasedCall helper (Python/Ruby module imports) - Extract resolveMemberCallByFile helper (trait dispatch, overload disambiguation) - Extract singleCandidate helper (constructor alias fallback, name-based fallback) - Update unit tests for new dispatcher semantics - Update doc comments referencing deleted D0-D4 paths Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/469eac38-b0c0-4a26-a2ff-3eb06299730b Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com> * SM-19: Add singleCandidate tail fallback for member calls with unresolvable receiver type Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/469eac38-b0c0-4a26-a2ff-3eb06299730b Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com> * fix(SM-19): address all PR abhigyanpatwari#770 review findings + fix CI Fixes all 5 test failures (2 unit + 3 integration) and addresses 10 review findings from comment 4225312416. Critical fix — singleCandidate null-route guard The SM-19 dispatcher chained singleCandidate as an unconditional tail fallback for member calls with receiverTypeName. This bypassed the SM-10 R3 null-route contract: when the receiver type IS in the index but file/owner filtering produced zero matches, the old code returned null (genuine miss), but the new code fell through to singleCandidate (false-positive CALLS edge). Root cause: resolveMemberCallByFile returns null for two semantically different reasons — (1) type not found in the index at all, and (2) type found but no candidate matched after narrowing. The dispatcher treated both as "try the next fallback." The old resolveCallTarget exited the entire function on case 2. Fix: after the scoped resolvers both return null, check whether the receiver type resolves in the index. If it does (case 2), null-route — the scoped resolvers made the right decision. If it doesn't (case 1, e.g. PHP 'mixed', dynamic types), singleCandidate is the correct last resort. ctx.resolve is cached so the check is free. This fixes: - Unit: no heritageMap null-route test (was getting 1 edge, expects 0) - Integration: Rust c.trait_only() negative test - Integration: 3 PHP heritage + alias tests (singleCandidate correctly fires when the receiver type is not in the index) Performance (findings abhigyanpatwari#1, abhigyanpatwari#2, abhigyanpatwari#3) - Thread pre-computed tiered result into resolveModuleAliasedCall via new tieredOverride parameter — eliminates the duplicate ctx.resolve call on every module-alias path. - Add countCallableCandidates helper that short-circuits at threshold without allocating an intermediate array — replaces the filterCallableCandidates(...).length > 1 allocation in skipMember. - resolveMemberCallByFile lookupCallableByName caching deferred to a follow-up (finding abhigyanpatwari#2) — the fix requires threading widenCache through the file-scoped resolver which is a larger change. Code quality (findings abhigyanpatwari#4, abhigyanpatwari#5) - Remove dead code: redundant conditional in resolveMemberCallByFile where both branches returned null. - Move WidenCache type declaration from mid-file (between JSDoc blocks) to adjacent to CONSTRUCTOR_TARGET_TYPES with other type declarations. Formatting - Applied prettier to call-processor.ts (CI format check was failing). Verification - tsc --noEmit clean - 3188 unit tests pass (0 skipped real tests) - 1766 resolver integration tests pass - Zero regressions — all PHP, Rust, and no-heritageMap tests green Review: abhigyanpatwari#770 (comment) * fix(SM-19): restore module-alias narrowing and constructor disambiguation Codex adversarial review on PR abhigyanpatwari#770 surfaced two silent regressions in the SM-19 thin dispatcher: Finding 1 [high] — Typed member calls bypassed module-alias narrowing. When two homonym receiver types are both imported by the caller, the import-scoped tier no longer narrows and the owner/file resolvers see genuine ambiguity. The dispatcher null-routed silently, dropping valid CALLS edges. Fix: consult `resolveModuleAliasedCall` at the top of the typed-member branch so an active alias on `call.receiverName` picks the aliased file before the generic resolvers run. Finding 2 [medium] — Constructor dispatch lost overload disambiguation. When `resolveStaticCall` bails (ambiguous or ownerless Constructor pool) and the caller supplied `overloadHints` / `preComputedArgTypes`, the branch fell straight through to `singleCandidate` — which also bails on multiple same-arity survivors. Fix: between `resolveStaticCall` and `singleCandidate`, run constructor-filtered overload disambiguation on the tiered pool. Only engages when a narrowing signal is present; preserves SM-10 R3 null-route for genuinely ambiguous cases. Tests: - call-processor.test.ts: 3 new dispatcher-level regression tests covering real-homonym alias narrowing, constructor overload disambiguation with `argTypes`, and null-route control - symbol-table.test.ts: update `module alias homonyms` test which previously codified the Finding 1 regression; now asserts resolution to the aliased file's method Verification: 3191 unit + 2398 integration tests pass; tsc --noEmit clean; prettier clean. * refactor(SM-19): address code review findings with clean-code pass Code review on commit e770ddca surfaced one P1 correctness regression and two P2 maintainability concerns. This commit closes all ten findings: P1 — Alias helper placement regression - resolveModuleAliasedCall now runs as a FALLBACK in the typed-member branch, after resolveMemberCall/resolveMemberCallByFile return null. Previously it short-circuited BEFORE scoped resolvers, leaking unrelated homonyms from the aliased file when a local var coincidentally matched a module alias. - Added type-file verification guard: alias narrowing only fires when the alias target file is among the receiver type's defining files. Prevents cross-type false positives and hardens SM-10 R3. P2 — Thin-dispatcher drift (roadmap Phase 3) - Extracted disambiguateByOverloadOrArgTypes shared helper. Centralizes the overloadHints → preComputedArgTypes precedence rule used by both member and constructor resolvers. - Folded constructor overload disambiguation into resolveStaticCall as step 4.5 (between the ambiguous-pool bail and the instantiable-class fallback). resolveStaticCall now accepts optional overloadHints / preComputedArgTypes symmetric with resolveMemberCallByFile. - Dispatcher's constructor branch returns to a 2-line delegation. - resolveMemberCallByFile now calls the shared helper instead of inlining the ternary. P2 — Missing test coverage - owner-scoped wins over alias narrowing (alias with unrelated target class must not override unique owner-scoped answer) - alias narrowing rejects unrelated target type (type-file guard) - alias fallthrough: receiverName not in alias map - alias fallthrough: alias target file has no matching method (overloadHints-for-constructor variant transitively covered via the extracted helper's member-path tests; direct dispatcher test deferred as it requires real OverloadHints fixture parsing) P3 — Clarity and durability - Stripped "Codex SM-19 Finding N" prefixes from comments. Replaced with durable explanations of WHY each guarded branch exists. - Added cross-reference comment at the tail-branch resolveModuleAliasedCall call site pointing to the typed-member branch usage. Verification: 3195 unit + 1766 resolver integration + 2398 full integration tests pass. tsc --noEmit clean. prettier clean. Plan: docs/plans/2026-04-11-002-fix-sm19-code-review-findings-plan.md --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com> Co-authored-by: Gergo Magyar <gergomagyar@icloud.com>

Replace the ~200-line monolithic
resolveCallTargetwith a 15-line dispatcher that routes toresolveMemberCall,resolveStaticCall, orresolveFreeCall. The D0–D4 fuzzy widening paths are removed; legitimate resolution strategies (module-alias disambiguation, file-based fallback, overload disambiguation) are extracted into focused helpers.Dispatcher (
resolveCallTarget)Extracted helpers
resolveModuleAliasedCall— Python/Rubyimport mod; mod.Symbol()patterns viamoduleAliasMap, with constructor-form retry and widen-to-global fallbackresolveMemberCallByFile— file-based + ownerId fallback for member calls where owner-scoped resolution fails (Rust trait dispatch, cross-file overloads), includes overload disambiguation viatryOverloadDisambiguation/matchCandidatesByArgTypessingleCandidate— tail fallback returning the sole survivor from the tiered pool after callable + arity filteringTest updates
resolveCallTarget D0 skip conditions (SM-11)→resolveCallTarget thin dispatcher (SM-19)with updated expectations (module-alias homonym case now returns null — genuine ambiguity without fuzzy path)Known regressions (2 tests)
Two tests show slightly more permissive behavior from the
singleCandidatetail fallback vs the old receiver-type-aware null-route: Rust qualified-syntax MRO and call-processor no-heritageMap. Both are edge cases where the old D1–D4 zero-match guard was stricter. Addressable in a follow-up with a receiver-type null-route guard.Warning
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