remove a needless if. (vuejs#3034)

dsonet · posva · commit ccd87000581f · 2016-06-05T15:25:30.000+02:00
Since always remove the old class.
diff --git a/src/directives/internal/transition.js b/src/directives/internal/transition.js
@@ -13,9 +13,7 @@ export default {
     id = id || 'v'
     oldId = oldId || 'v'
     el.__v_trans = new Transition(el, id, hooks, this.vm)
-    if (oldId) {
-      removeClass(el, oldId + '-transition')
-    }
+    removeClass(el, oldId + '-transition')
     addClass(el, id + '-transition')
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -13,9 +13,7 @@ export default {`
`13`	`13`	`id = id \|\| 'v'`
`14`	`14`	`oldId = oldId \|\| 'v'`
`15`	`15`	`el.__v_trans = new Transition(el, id, hooks, this.vm)`
`16`		`- if (oldId) {`
`17`		`- removeClass(el, oldId + '-transition')`
`18`		`- }`
	`16`	`+ removeClass(el, oldId + '-transition')`
`19`	`17`	`addClass(el, id + '-transition')`
`20`	`18`	`}`
`21`	`19`	`}`