Cleanup

memory.ts

@@ -65,15 +65,15 @@ export default class Memory extends EventEmitter {
     }
 
     private originalEmit(type: string, ...args: unknown[]) {
-        var doError = type === 'error';
+        let doError = type === 'error';
 
-        var events = (this as any)._events;
+        let events = (this as any)._events;
         if (events !== undefined) doError = doError && events.error === undefined;
         else if (!doError) return false;
 
         // If there is no 'error' event listener then throw.
         if (doError) {
-            var er;
+            let er;
             if (args.length > 0) er = args[0];
             if (er instanceof Error) {
                 // Note: The comments on the `throw` lines are intentional, they show
@@ -81,15 +81,13 @@ export default class Memory extends EventEmitter {
                 throw er; // Unhandled 'error' event
             }
             // At least give some kind of context to the user
-            var err = new Error('Unhandled error.' + (er ? ' (' + (er as any).message + ')' : ''));
+            let err = new Error('Unhandled error.' + (er ? ' (' + (er as any).message + ')' : ''));
             (err as any).context = er;
             throw err; // Unhandled 'error' event
         }
 
-        var handler = events[type];
-
+        let handler = events[type];
         if (handler === undefined) return false;
-
         if (typeof handler === 'function') {
             try {
                 Reflect.apply(handler, this, args);
@@ -97,8 +95,7 @@ export default class Memory extends EventEmitter {
                 events[type] = undefined;
             }
         } else {
-            // var len = handler.length;
-            var listeners = [...handler];
+            let listeners = [...handler];
 
             listeners
                 .filter((e) => {
@@ -118,7 +115,6 @@ export default class Memory extends EventEmitter {
                     }
                 });
         }
-
         return true;
     }