Add general off handling

source/event-emitter.ts

@@ -117,11 +117,17 @@ export class EventEmitter<T extends EventMap> {
      * @param type - The event type.
      * @param listener - The listener function.
      */
-    off<K extends keyof T>(type: K, listener: Listener<T[K]>): void {
+    off<K extends keyof T>(type: K, listener?: Listener<T[K]>): void {
         // Get the listeners for the event type.
         const listeners = this.#listeners.get(type);
         if (!listeners) return;
 
+        // If no listener is provided, remove all listeners for the event type.
+        if (!listener) {
+            this.#listeners.delete(type);
+            return;
+        }
+
         // Find the listener entry.
         const listenerEntry = Array.from(listeners).find((entry) => entry.listener === listener || entry.wrappedListener === listener);