d

src/Bus.swift

@@ -85,9 +85,9 @@ public extension Bus {
 public extension Bus {
     static func processSync<Src, Dst>(
         _ subscriptions: inout Set<AnyCancellable>,
+        _ handler: @escaping ((Src) -> Dst?),
         _ keyIn: String,
-        _ keyOut: String,
-        _ handler: @escaping ((Src) -> Dst?)
+        _ keyOut: String
     ) {
         Service.singleton.broadcaster
             .compactMap {
@@ -102,4 +102,23 @@ public extension Bus {
             .sink { vOut in Service.singleton.send(keyOut, vOut) }
             .store(in: &subscriptions)
     }
+
+    static func processSyncG<Src, Dst>(
+        _ handler: @escaping ((Src) -> Dst?),
+        _ keyIn: String,
+        _ keyOut: String
+    ) {
+        Service.singleton.broadcaster
+            .compactMap {
+                guard
+                    $0.key == keyIn,
+                    let vIn = $0.value as? Src
+                else {
+                    return nil
+                }
+                return handler(vIn)
+            }
+            .sink { vOut in Service.singleton.send(keyOut, vOut) }
+            .store(in: &Service.singleton.subscriptions)
+    }
 }