fix(extraction): name a function bound through a curried wrapper (#1747) (#2002)

* fix(extraction): name a function bound through a curried wrapper (#1747)

reactHookBoundName already names an anonymous function after the
variable_declarator that binds it. The shape is general, but the method
is bounded to three React hooks, so `const run =
Effect.fn("Session.run")(function* () {…})` produced no function node at
all -- and its body's calls were attributed to the enclosing container,
so a file gained an outgoing edge belonging to a function and the
callee's caller list named the file instead.

Bound the new path by a different, equally decidable test: the callee is
itself a call, i.e. a factory returning the wrapper. That admits
Effect.fn(...)(fn), connect(mapState)(fn) and a project's own
wrap("n")(fn), and excludes the single-call forms whose argument is a
computation -- useMemo(() => …, []), arr.map(…) -- which stay anonymous
exactly as before. Widening to "any callee" would have given useMemo a
function node and reddened react-hook-handlers.test.ts.

Generators are admitted here and not in reactHookBoundName: a React
handler is never a generator, while function* is the common form in the
ecosystem this shape comes from, and it is what the report opens with --
broadening the callee test alone would not have fixed that repro.

Mirrored in the Rust kernel; kernel-parity.mjs reports byte-parity on
the new shape.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WgtWMywGTyu6twnk1Bu9nP
(cherry picked from commit 4f2b40080d)

* fix(extraction): name a curried-wrapper function that is an object member (#1747)

The curried-wrapper bound stopped at a variable_declarator parent, so
`return { getMode: Effect.fn("ACP.Session.getMode")(function* () {…}) }`
still produced no function node. An Effect service is usually an object a
factory returns, and on sst/opencode (df23b7f) these member positions were
the bulk of what the branch missed.

The member already has a name in the source: its property key. This repo
names `key: () => {}` pairs by that key (extractObjectLiteralFunctions /
objectKeyName), so a `pair` parent is now named the same way. The
callee-is-a-call rule is unchanged, so `key: useMemo(() => …, [])` and
`key: arr.map(…)` stay anonymous.

extractObjectLiteralFunctions also reaches such a member, because an
exported object with an inline function member is extracted member by member
and its initializer is never walked.

A wrapper passed as an argument to another call has no binding at all and is
left as it was.

Mirrored in the Rust kernel; kernel-parity.mjs reports byte-parity on the
new shapes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Dfb3aazPY1ccmp5vam4k3L
(cherry picked from commit bbdef20542)

* chore: drop CHANGELOG entry (collected separately)

---------

Co-authored-by: Max Hsu <maxmilian@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

codegraph-kernel/src/tsjs/extractors.rs

@@ -559,6 +559,17 @@ impl<'t> Walker<'t> {
                     if matches!(v.kind(), "arrow_function" | "function_expression") {
                         let name = util::object_key_name(self.text(k));
                         self.extract_function(v, Some(name));
+                    } else if v.kind() == "call_expression" {
+                        // `key: Effect.fn("…")(function* () {…})` — see
+                        // curried_wrapper_bound_name.
+                        let fun = v
+                            .child_by_field_name("arguments")
+                            .and_then(|a| a.named_child(0));
+                        if let Some(f) = fun {
+                            if let Some(bound) = self.curried_wrapper_bound_name(f) {
+                                self.extract_function(f, Some(bound));
+                            }
+                        }
                     }
                 }
             } else if member.kind() == "method_definition" {

codegraph-kernel/src/tsjs/mod.rs

@@ -752,6 +752,13 @@ impl<'t> Walker<'t> {
                 self.extract_function(node, Some(bound));
                 return;
             }
+            // `const run = Effect.fn("Session.run")(function* () {…})` (#1747):
+            // the same declarator binding through a curried wrapper. Mirrors
+            // TreeSitterExtractor's curriedWrapperBoundName.
+            if let Some(bound) = self.curried_wrapper_bound_name(node) {
+                self.extract_function(node, Some(bound));
+                return;
+            }
             // `const handleClear = () => {…}` inside a body (#1669): named by
             // its declarator, like at module scope. Mirrors
             // TreeSitterExtractor's declaratorBoundFunction.
@@ -842,6 +849,71 @@ impl<'t> Walker<'t> {
         Some(self.text(name_node).to_string())
     }
 
+    /// The declarator name for an anonymous function passed to a CURRIED
+    /// wrapper call — `const NAME = factory(...)(function () {…})` — or the
+    /// property key when the call is an object member, `{ NAME: factory(...)(fn) }`;
+    /// else None.
+    ///
+    /// `react_hook_bound_name` above names a function through the declarator
+    /// that binds it; the shape is general, but that method is bounded to the
+    /// three React handler hooks. This is the same shape with a different,
+    /// equally decidable bound: the callee is itself a call, i.e. a factory
+    /// that returns the wrapper (#1747). Requiring that keeps it narrow —
+    /// `useMemo(|| …, [])` and `arr.map(…)` are single calls and stay
+    /// anonymous, exactly as before.
+    ///
+    /// Generators are admitted here and not in `react_hook_bound_name`: a
+    /// React handler is never a generator, while `function*` is the common
+    /// form in the ecosystem this shape comes from.
+    ///
+    /// Mirrors TreeSitterExtractor's curriedWrapperBoundName.
+    fn curried_wrapper_bound_name(&self, node: Node<'t>) -> Option<String> {
+        if !matches!(
+            node.kind(),
+            "arrow_function" | "function_expression" | "generator_function"
+        ) {
+            return None;
+        }
+        let args = node.parent()?;
+        if args.kind() != "arguments" {
+            return None;
+        }
+        let first = args.named_child(0)?;
+        if first.start_byte() != node.start_byte() || first.end_byte() != node.end_byte() {
+            return None;
+        }
+        let call = args.parent()?;
+        if call.kind() != "call_expression" {
+            return None;
+        }
+        // The bound that replaces the hook allowlist: the thing being called
+        // is itself a call, so this is a curried wrapper's second application.
+        let callee = call.child_by_field_name("function")?;
+        if callee.kind() != "call_expression" {
+            return None;
+        }
+        let binder = call.parent()?;
+        // `{ getMode: Effect.fn("…")(function* () {…}) }`: an object member is
+        // named by its property key, as extract_object_literal_functions names
+        // `key: () => {}`.
+        if binder.kind() == "pair" {
+            let key = binder.child_by_field_name("key")?;
+            let value = binder.child_by_field_name("value")?;
+            if value.start_byte() != call.start_byte() || value.end_byte() != call.end_byte() {
+                return None;
+            }
+            return Some(util::object_key_name(self.text(key)));
+        }
+        if binder.kind() != "variable_declarator" {
+            return None;
+        }
+        let name_node = binder.child_by_field_name("name")?;
+        if name_node.kind() != "identifier" {
+            return None;
+        }
+        Some(self.text(name_node).to_string())
+    }
+
     /// extractName / extractNameRaw for the TS/JS configs.
     fn extract_name(&self, node: Node) -> String {
         // javascriptExtractor.resolveName: field_definition names its key the