fix: deprecated accessors not being detected as deprecated

CHANGELOG.md

@@ -7,6 +7,7 @@ title: Changelog
 ### Bug Fixes
 
 - Anchor links in the mobile hamburger menu now correctly scroll to their target, #3049.
+- `Reflection.isDeprecated` now considers accessors deprecated when their `get`/`set` signatures carry a `@deprecated` tag. Previously only `signatures` (used by methods/functions) was checked, so a `@deprecated` getter/setter was not reported as deprecated.
 
 ## v0.28.20 (2026-07-05)
 

src/lib/models/Reflection.ts

@@ -473,6 +473,17 @@ export abstract class Reflection {
                 ) {
                     signaturesDeprecated = true;
                 }
+
+                const accessorSignatures = [
+                    decl.getSignature,
+                    decl.setSignature,
+                ].filter((sig): sig is SignatureReflection => sig != null);
+                if (
+                    accessorSignatures.length &&
+                    accessorSignatures.every((sig) => sig.comment?.getTag("@deprecated"))
+                ) {
+                    signaturesDeprecated = true;
+                }
             },
         });
 

src/test/behavior.c2.test.ts

@@ -529,6 +529,21 @@ describe("Behavior Tests", () => {
         );
     });
 
+    it("Marks accessors as deprecated based on their get/set signatures", () => {
+        const project = convert("deprecatedAccessor");
+        const test = query(project, "Test");
+
+        ok(query(project, "Test.getterOnly").isDeprecated());
+        ok(!query(project, "Test.setterOnly").isDeprecated());
+        ok(query(project, "Test.both").isDeprecated());
+        ok(
+            !query(project, "Test.mixed").isDeprecated(),
+            "An accessor is only deprecated if every one of its defined signatures is deprecated",
+        );
+        ok(!query(project, "Test.notDeprecated").isDeprecated());
+        ok(!test.isDeprecated());
+    });
+
     it("Handles @hideconstructor", () => {
         const project = convert("hideconstructor");
 

src/test/converter2/behavior/deprecatedAccessor.ts

@@ -0,0 +1,26 @@
+export class Test {
+    /** @deprecated */
+    get getterOnly() {
+        return 1;
+    }
+
+    set setterOnly(v: number) {}
+
+    /** @deprecated */
+    get both() {
+        return 1;
+    }
+    /** @deprecated */
+    set both(v: number) {}
+
+    get mixed() {
+        return 1;
+    }
+    /** @deprecated */
+    set mixed(v: number) {}
+
+    get notDeprecated() {
+        return 1;
+    }
+    set notDeprecated(v: number) {}
+}