in js/libs/ical.js [58:74]
var storeValParam = function (name) {
return function (val, curr) {
var current = curr[name];
if (Array.isArray(current)) {
current.push(val);
return curr;
}
if (current != null) {
curr[name] = [current, val];
return curr;
}
curr[name] = val;
return curr
}
}