initialization macro to suppress the unused case warning

build-scripts/common-args.hxml

@@ -4,4 +4,5 @@
 -lib tink_json
 -cp kiss/src
 -cp cloner/src
--D analyzer-optimize
+-D analyzer-optimize
+--macro kiss.Kiss.setup()

src/kiss/Kiss.hx

@@ -161,6 +161,23 @@ class Kiss {
         #end
     }
 
+    /**
+     * Initializer macro: suppress some compiler warnings that Kiss code commonly generates
+     * Source: https://try.haxe.org/#10F18962 by @kLabz
+     */
+    public static macro function setup() {
+        haxe.macro.Context.onAfterTyping(function(_) {
+            haxe.macro.Context.filterMessages(function(msg) {
+                return switch (msg) {
+                    case Warning("This case is unused", _): false;
+                    case _: true;
+                };
+            });
+        });
+      
+        return macro {};
+    }
+
     /**
         Build macro: add fields to a class from a corresponding .kiss file
     **/