Safari fix

Author: bfiessinger

changelog.MD

@@ -4,6 +4,7 @@
 - Call destroy method on initialization to prevent errors with existing ones
 - Added a update Method to edit settings after initialization
 - Bugfix: links where not collected correctly in Internet Explorer
+- Bugfix: window.performance fix on old Safari's
 - Remove Deprecated warnings
 - cleaned up some functions
 

dist/scrolltosmooth.js

@@ -584,7 +584,9 @@ var scrollToSmooth = (function() {
      */
 
     var getTime = function getTime() {
-      return "now" in w.performance ? performance.now() : new Date().getTime();
+      return w.performance && "now" in w.performance
+        ? performance.now()
+        : new Date().getTime();
     };
     /**
      * Determine element baseURI

dist/scrolltosmooth.min.js

@@ -68,7 +68,7 @@ export default class scrollToSmooth {
 		/**
 		 * Get the current Timestamp
 		 */
-		let getTime = () => 'now' in w.performance ? performance.now() : new Date().getTime();
+		let getTime = () => (w.performance && 'now' in w.performance) ? performance.now() : new Date().getTime();
 
 		/**
 		 * Determine element baseURI