double.infinity instead of null is clearer in it's intend
non nullable IList is also clearer
fix comment to reflect changes

@@ -38,3 +43,3 @@
         content.users[userId] ?? content.usersDefault;
 
-    final userLevel = powerLevelOf(user);
+    //Creators get power level infinite, here marked with null

@@ -40,1 +45,3 @@
-    final userLevel = powerLevelOf(user);
+    //Creators get power level infinite, here marked with null
+    final userLevel = roomCreators?.contains(user) == true
+        ? null

@@ -0,0 +22,4 @@
+
+    return switch (createEventContent?.additionalCreatorIds) {
+      IList<String> creators => creators.add(createEvent.sender),
+      _ => [createEvent.sender].toIList(),

@@ -97,3 +97,3 @@
     );
   }
-}
+}

@@ -0,0 +13,4 @@
+    final createRowId = room.state[EventType.create.type]?[""];
+    final createEvent = createRowId == null ? null : room.events[createRowId];
+
+    if (createEvent == null) return null;