in static/js/tracker.js [2542:2557]
x = function () {
var e, n, t, r;
return null !== (e = window) &&
void 0 !== e &&
null !== (n = e.performance) &&
void 0 !== n &&
n.now
? performance.now()
: null !== (t = window) &&
void 0 !== t &&
null !== (r = t.performance) &&
void 0 !== r &&
r.timing
? new Date().getTime() - performance.timing.navigationStart
: new Date().getTime() - g;
},