Apply @:nullSafety to chart editor classes.

source/funkin/ui/debug/charting/ChartEditorCommand.hx

@@ -35,6 +35,7 @@ interface ChartEditorCommand
   public function toString():String;
 }
 
+@:nullSafety
 class AddNotesCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -98,6 +99,7 @@ class AddNotesCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class RemoveNotesCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -153,6 +155,7 @@ class RemoveNotesCommand implements ChartEditorCommand
 /**
  * Appends one or more items to the selection.
  */
+@:nullSafety
 class SelectItemsCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -220,6 +223,7 @@ class SelectItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class AddEventsCommand implements ChartEditorCommand
 {
   var events:Array<SongEventData>;
@@ -278,6 +282,7 @@ class AddEventsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class RemoveEventsCommand implements ChartEditorCommand
 {
   var events:Array<SongEventData>;
@@ -327,6 +332,7 @@ class RemoveEventsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class RemoveItemsCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -385,6 +391,7 @@ class RemoveItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class SwitchDifficultyCommand implements ChartEditorCommand
 {
   var prevDifficulty:String;
@@ -424,6 +431,7 @@ class SwitchDifficultyCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class DeselectItemsCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -478,6 +486,7 @@ class DeselectItemsCommand implements ChartEditorCommand
  * Sets the selection rather than appends it.
  * Deselects any notes that are not in the new selection.
  */
+@:nullSafety
 class SetItemSelectionCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -518,6 +527,7 @@ class SetItemSelectionCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class SelectAllItemsCommand implements ChartEditorCommand
 {
   var previousNoteSelection:Array<SongNoteData>;
@@ -553,6 +563,7 @@ class SelectAllItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class InvertSelectedItemsCommand implements ChartEditorCommand
 {
   var previousNoteSelection:Array<SongNoteData>;
@@ -587,6 +598,7 @@ class InvertSelectedItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class DeselectAllItemsCommand implements ChartEditorCommand
 {
   var previousNoteSelection:Array<SongNoteData>;
@@ -622,6 +634,7 @@ class DeselectAllItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class CutItemsCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -679,6 +692,7 @@ class CutItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class FlipNotesCommand implements ChartEditorCommand
 {
   var notes:Array<SongNoteData>;
@@ -729,6 +743,7 @@ class FlipNotesCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class PasteItemsCommand implements ChartEditorCommand
 {
   var targetTimestamp:Float;
@@ -787,6 +802,7 @@ class PasteItemsCommand implements ChartEditorCommand
   }
 }
 
+@:nullSafety
 class ExtendNoteLengthCommand implements ChartEditorCommand
 {
   var note:SongNoteData;