+/**
+ * By default, zone.js will patch all possible macroTask and DomEvents
+ * user can disable parts of macroTask/DomEvents patch by setting following flags
+ */
+
+// (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
+// (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
+// (window as any).__zone_symbol__BLACK_LISTED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
+/*
+* in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
+* with the following flag, it will bypass `zone.js` patch for IE/Edge
+*/
+// (window as any).__Zone_enable_cross_context_check = true;
+