fix: add missing monaco type

Author: CGNonofr

src/types/monaco.d.ts

@@ -0,0 +1,9 @@
+import { IRange } from 'monaco-editor'
+
+declare module 'monaco-editor' {
+    namespace editor {
+        interface IStandaloneCodeEditor {
+            setHiddenAreas(ranges: IRange[]): void
+        }
+    }
+}