feat(router): move anchor creation to seperate function (#3092)

* feat(router): move anchor creation to seperate function

* fixup! Modifier

* Restore protected visibility fully

---------

Co-authored-by: Gerrit Birkeland <gerrit@gerritbirkeland.com>

Author: avivkeller

src/lib/output/router.ts

@@ -356,6 +356,27 @@ export abstract class BaseRouter implements Router {
         }
     }
 
+    protected createAnchor(
+        target: Reflection,
+        pageTarget: RouterTarget,
+    ): string {
+        const parts = [target.name];
+        while (target.parent && target.parent !== pageTarget) {
+            target = target.parent;
+            // Avoid duplicate names for signatures and useless __type in anchors
+            if (
+                !target.kindOf(
+                    ReflectionKind.TypeLiteral |
+                        ReflectionKind.FunctionOrMethod,
+                )
+            ) {
+                parts.unshift(target.name);
+            }
+        }
+
+        return this.getSlugger(pageTarget).slug(parts.join("."));
+    }
+
     protected buildAnchors(
         target: RouterTarget,
         pageTarget: RouterTarget,
@@ -387,24 +408,7 @@ export abstract class BaseRouter implements Router {
         }
 
         if (!target.kindOf(ReflectionKind.TypeLiteral)) {
-            let refl: Reflection | undefined = target;
-            const parts = [refl.name];
-            while (refl.parent && refl.parent !== pageTarget) {
-                refl = refl.parent;
-                // Avoid duplicate names for signatures and useless __type in anchors
-                if (
-                    !refl.kindOf(
-                        ReflectionKind.TypeLiteral |
-                            ReflectionKind.FunctionOrMethod,
-                    )
-                ) {
-                    parts.unshift(refl.name);
-                }
-            }
-
-            const anchor = this.getSlugger(pageTarget).slug(
-                parts.join("."),
-            );
+            const anchor = this.createAnchor(target, pageTarget);
 
             this.fullUrls.set(
                 target,