replace `map` with `forEach`

src/js/events.js

@@ -22,10 +22,10 @@ class Events {
         }
     }
 
-    trigger (name, info) {
+    trigger (name, data) {
         if (this.events[name] && this.events[name].length) {
             for (let i = 0; i < this.events[name].length; i++) {
-                this.events[name][i](info);
+                this.events[name][i](data);
             }
         }
     }

src/js/timer.js

@@ -20,9 +20,8 @@ class Timer {
     }
 
     init () {
-        this.types.map((item) => {
+        this.types.forEach((item) => {
             this[`init${item}Checker`]();
-            return item;
         });
     }
 
@@ -64,10 +63,9 @@ class Timer {
     }
 
     destroy () {
-        this.types.map((item) => {
+        this.types.forEach((item) => {
             this[`enable${item}Checker`] = false;
             this[`${item}Checker`] && clearInterval(this[`${item}Checker`]);
-            return item;
         });
     }
 }