diff --git a/src/wasm/WabtOutput.test.ts b/src/wasm/WabtOutput.test.ts
index d69cafa73f..f1aabe95a9 100644
--- a/src/wasm/WabtOutput.test.ts
+++ b/src/wasm/WabtOutput.test.ts
@@ -284,6 +284,40 @@ it("keeps exact local, ambiguous URL, computed and unparseable glue distinct", (
   });
 });
 
+it("retains .wasm references in glue whose conditional arrows only parse as JavaScript", () => {
+  const candidates = ["/app/module.wasm"];
+  // TypeScript grammar reads `n===0?H=>(x):H=>(y)` as a return type, so the
+  // unnamed-source fallback fails the file; the .js filename selects JavaScript.
+  const conditional = associateWasmGlue(
+    'const pick=n===0?H=>({start:H.startY}):H=>({start:H.startX});\nfetch("./module.wasm");\n',
+    "/app/glue.js",
+    candidates,
+  );
+  expect(conditional.parse_status).toBe("complete");
+  expect(conditional.references).toMatchObject([
+    {
+      value: "./module.wasm",
+      line: 2,
+      column: 6,
+      candidate_paths: candidates,
+      association: "local-path-candidate",
+      evidence_kind: "static-literal",
+    },
+  ]);
+
+  expect(
+    associateWasmGlue('fetch("./module.wasm");\n', "/app/glue.js", candidates)
+      .references,
+  ).toMatchObject([
+    {
+      value: "./module.wasm",
+      line: 1,
+      column: 6,
+      association: "local-path-candidate",
+    },
+  ]);
+});
+
 it("retains directive literals and matches their cooked escaped path", () => {
   const candidates = ["/app/module.wasm"];
   const directive = associateWasmGlue(
diff --git a/src/wasm/WasmGlueAdapter.ts b/src/wasm/WasmGlueAdapter.ts
index f249c232cb..4a130508ed 100644
--- a/src/wasm/WasmGlueAdapter.ts
+++ b/src/wasm/WasmGlueAdapter.ts
@@ -11,8 +11,11 @@ export const associateWasmGlue = (
 ) => {
   // Babel requires a hashbang at offset zero. Removing only its preceding BOM
   // leaves reference coordinates intact: all code starts on a later line.
+  // The selected filename selects the JavaScript grammar for .js glue; the
+  // unnamed-source fallback would misread valid JavaScript conditionals.
   const file = parseJavaScriptSource(
     source.startsWith("\uFEFF#!") ? source.slice(1) : source,
+    path,
   );
   const references: {
     value: string;