fix($location): throw Errors not Strings

Author: IgorMinar

src/ng/location.js

@@ -85,7 +85,7 @@ function convertToHashbangUrl(url, basePath, hashPrefix) {
         path = match.path.substr(pathPrefix.length);
 
     if (match.path.indexOf(pathPrefix) !== 0) {
-      throw 'Invalid url "' + url + '", missing path prefix "' + pathPrefix + '" !';
+      throw Error('Invalid url "' + url + '", missing path prefix "' + pathPrefix + '" !');
     }
 
     return composeProtocolHostPort(match.protocol, match.host, match.port) + basePath +
@@ -114,7 +114,7 @@ function LocationUrl(url, pathPrefix) {
     var match = matchUrl(url, this);
 
     if (match.path.indexOf(pathPrefix) !== 0) {
-      throw 'Invalid url "' + url + '", missing path prefix "' + pathPrefix + '" !';
+      throw Error('Invalid url "' + url + '", missing path prefix "' + pathPrefix + '" !');
     }
 
     this.$$path = decodeURIComponent(match.path.substr(pathPrefix.length));
@@ -160,8 +160,9 @@ function LocationHashbangUrl(url, hashPrefix) {
   this.$$parse = function(url) {
     var match = matchUrl(url, this);
 
+
     if (match.hash && match.hash.indexOf(hashPrefix) !== 0) {
-      throw 'Invalid url "' + url + '", missing hash prefix "' + hashPrefix + '" !';
+      throw Error('Invalid url "' + url + '", missing hash prefix "' + hashPrefix + '" !');
     }
 
     basePath = match.path + (match.search ? '?' + match.search : '');