docs(comment): add comment

hezhongfeng · hezhongfeng · commit 5e5c777134e4 · 2019-11-07T14:38:29.000+08:00
diff --git a/src/index.js b/src/index.js
@@ -53,6 +53,7 @@ VuePageStackPlugin.install = function(Vue, { router, name = config.componentName
     }
   }
 
+  // ensure it's the first beforeEach hook
   router.beforeHooks.unshift(beforeEach);
 };
 

Original file line number	Diff line number	Diff line change
`@@ -53,6 +53,7 @@ VuePageStackPlugin.install = function(Vue, { router, name = config.componentName`
`53`	`53`	`}`
`54`	`54`	`}`
`55`	`55`
	`56`	`+ // ensure it's the first beforeEach hook`
`56`	`57`	`router.beforeHooks.unshift(beforeEach);`
`57`	`58`	`};`
`58`	`59`