Marking return values readonly

mjbvz · mjbvz · commit 1f4ef6a0ca5b · 2019-09-19T17:42:51.000-07:00
diff --git a/src/vs/editor/browser/services/codeEditorService.ts b/src/vs/editor/browser/services/codeEditorService.ts
@@ -26,11 +26,11 @@ export interface ICodeEditorService {
 
 	addCodeEditor(editor: ICodeEditor): void;
 	removeCodeEditor(editor: ICodeEditor): void;
-	listCodeEditors(): ICodeEditor[];
+	listCodeEditors(): readonly ICodeEditor[];
 
 	addDiffEditor(editor: IDiffEditor): void;
 	removeDiffEditor(editor: IDiffEditor): void;
-	listDiffEditors(): IDiffEditor[];
+	listDiffEditors(): readonly IDiffEditor[];
 
 	/**
 	 * Returns the current focused code editor (if the focus is in the editor or in an editor widget) or
