Only update history state if url differs. (vercel#172)

dstreet · nkzawa · commit 7186fe8b7eb2 · 2016-11-03T19:15:03.000+09:00
diff --git a/lib/router.js b/lib/router.js
@@ -108,7 +108,10 @@ export default class Router {
       throw err
     }
 
-    window.history[method]({ route }, null, url)
+    if (getURL() !== url) {
+      window.history[method]({ route }, null, url)
+    }
+
     this.route = route
     this.set(url, { ...data, props })
     return true
