Fix lot of eslint problems

src/Events/EditorEvents.ts

@@ -51,8 +51,14 @@ export function UseCustomEvents(
       historyCurrentStep,
       configuration
     };
+    const current = editorRef.current;
+
+    if (current === null) {
+      return;
+    }
 
     const funcs = new Map<string, () => void>();
+
     for (const event of events) {
       function Func(eventInitDict?: CustomEventInit): void {
         return event.func({
@@ -62,7 +68,7 @@ export function UseCustomEvents(
           eventInitDict
         });
       }
-      editorRef.current?.addEventListener(event.name, Func);
+      current?.addEventListener(event.name, Func);
       funcs.set(event.name, Func);
     }
     return () => {
@@ -71,7 +77,7 @@ export function UseCustomEvents(
         if (func === undefined) {
           continue;
         }
-        editorRef.current?.removeEventListener(event.name, func);
+        current?.removeEventListener(event.name, func);
       }
     };
   });