A NestJS-style monorepo has one UserService/UserModule/UserRepository per
app; with no package concept for TS they share one global name scope and
agents visibly warned that CodeGraph was mixing unrelated classes.
Two distinct problems, two fixes:
1. TOOL AGGREGATION. callers/callees returned one merged list across every
same-named match, and impact merged all their blast radii into a single
overstated subgraph. Now: matches group into DISTINCT DEFINITIONS
(filePath + qualifiedName — same-file overloads still merge, that's the
overload feature) and render one file-labeled section per definition;
a new `file` argument (path or suffix, like codegraph_node's) narrows
to one definition, suppressing the stale aggregation note; a
non-matching `file` falls back to all definitions with a note.
server-instructions documents the behavior.
2. RESOLUTION WRONG EDGES. Auditing a real monorepo (amplication, 54k
nodes) found 1,036 cross-package `references` edges into duplicated
names. Root cause: the React framework resolver ran PascalCase
component resolution on refs from PLAIN .ts FILES (a GraphQL types
file's own `Account` type alias lost to an arbitrary same-named CLASS
in another package — the resolver's blind `components[0]` fallback at
confidence 0.8 outranked the name-matcher's proximity-correct 0.7).
Component resolution is now gated to JSX-capable refs (tsx/jsx) and
never guesses among multiple candidates without a positional signal
(same-dir / component-dir / unique). Cross-package wrong edges:
1,036 -> 40 (-96%; the remainder are genuine shared-model imports and
codegen template scaffolds), with the freed refs re-resolving to the
correct same-file/same-package targets. excalidraw (a real React repo)
is a zero-delta control — legitimate component refs all carry
same-dir/component-dir signals.
Graph-level separation was verified correct on a fixture before any
changes (import + proximity resolution keeps apps apart) — the conflation
was tool-level plus the react-resolver edge class.
Tests: 6-test e2e suite (grouped callers/callees, per-definition impact
radii, file narrowing, fallback note, cross-app edge isolation) + react
resolver unit tests updated to production reality (tsx refs resolve,
plain-ts refs decline). Full suite 1398 passed. EXTRACTION_VERSION
23 -> 24 (re-index to drop the wrong cross-package edges).
Closes#764
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
