Fix hash-mode replaceHash() when page has a <base href />

Author: daohoangson

src/history/hash.js

@@ -90,8 +90,10 @@ function pushHash (path) {
 }
 
 function replaceHash (path) {
-  const i = window.location.href.indexOf('#')
+  const href = window.location.href
+  const i = href.indexOf('#')
+
   window.location.replace(
-    window.location.href.slice(0, i >= 0 ? i : 0) + '#' + path
+    window.location.href.slice(0, i >= 0 ? i : href.length) + '#' + path
   )
 }