small edits

Author: yyx990803

src/index.js

@@ -284,7 +284,7 @@ class Router {
   _addRoute (path, handler, segments) {
     guardComponent(path, handler)
     handler.path = path
-    handler.fullPath = (segments.reduce(function (path, segment) {
+    handler.fullPath = (segments.reduce((path, segment) => {
       return path + segment.path
     }, '') + path).replace('//', '/')
     segments.push({

src/pipeline.js

@@ -264,7 +264,7 @@ function loadData (component, transition, hook, cb, cleanup) {
   transition.callHooks(hook, component, (data, onError) => {
     // merge data from multiple data hooks
     if (Array.isArray(data) && data._needMerge) {
-      data = data.reduce(function (res, obj) {
+      data = data.reduce((res, obj) => {
         if (isPlainObject(obj)) {
           Object.keys(obj).forEach(key => {
             res[key] = obj[key]

src/transition.js

@@ -38,9 +38,7 @@ export default class RouteTransition {
 
     // the activate queue is an array of route handlers
     // that need to be activated
-    this.activateQueue = matched.map(function (match) {
-      return match.handler
-    })
+    this.activateQueue = matched.map(match => match.handler)
   }
 
   /**
@@ -139,9 +137,7 @@ export default class RouteTransition {
           transition.router._onTransitionValidated(transition)
 
           // trigger reuse for all reused views
-          reuseQueue && reuseQueue.forEach(function (view) {
-            reuse(view, transition)
-          })
+          reuseQueue && reuseQueue.forEach(view => reuse(view, transition))
 
           // the root of the chain that needs to be replaced
           // is the top-most non-reusable view.