Improve comments

utils/timer.js

@@ -15,30 +15,35 @@ class Timer {
     }
 
     cancel(identifier) {
+        // Return if no timer with the respactive identifier is available
         if (!this.#timers.hasOwnProperty(identifier)) {
             console.debug(`No timer with identifier ${identifier} available to cancel`);
             return false;
         }
 
+        // Check if timer is active
         if (!this.#timers[identifier].isActive()) {
             console.debug(`Timer with identifier ${identifier} not running. Cancel anyway`);
         } else {
             console.debug(`Cancel timer with identifier ${identifier}`);  
         }
 
+        // Cancel timer
         this.#timers[identifier].cancel();
         delete this.#timers[identifier];
     }
 
     cancelAll() {
-
+        // Fetch timers
         let timers = Object.keys(this.#timers);
 
+        // Return if no timers available
         if (timers.length == 0) {
             console.debug('No timers available to cancel');
             return false;
         }
         
+        // Cancel all timers
         for (let timer of timers) {
            this.cancel(timer);
         }