Hello airbnb

hydro/service/bus.js

@@ -1,15 +1,14 @@
-const EventEmitter = require('events').EventEmitter;
+const { EventEmitter } = require('events');
+
 const bus = new EventEmitter();
 module.exports = {
     subscribe(events, handler) {
-        for (let event of events)
-            bus.on(event, handler);
+        for (const event of events) bus.on(event, handler);
     },
     unsubscribe(events, handler) {
-        for (let event of events)
-            bus.off(event, handler);
+        for (const event of events) bus.off(event, handler);
     },
     publish(event, data) {
         bus.emit(event, { value: data, event });
-    }
+    },
 };