Revert changes to parseRRule() and add boolean 'fromString' to return…

…ed rrule object

The returned object is either an rruleSet or an rrule, depending on wether the input string contained EXDATE/EXRULE or not. To account for this I remove the timezoneification of the dates here. It should be handled in the recurring.expand() function.

packages/rrule/src/main.ts

@@ -60,17 +60,9 @@ function parseRRule(input, dateEnv: DateEnv) {
   let rrule
 
   if (typeof input === 'string') {
-    let rruleTemp = rrulestr(input)
+    rrule = rrulestr(input)
+    rrule.fromString = true
 
-    if (rruleTemp.origOptions.dtstart != null) {
-      rruleTemp.origOptions.dtstart = dateEnv.createMarker(rruleTemp.origOptions.dtstart)
-    }
-
-    if (rruleTemp.origOptions.until != null) {
-      rruleTemp.origOptions.until = dateEnv.createMarker(rruleTemp.origOptions.until)
-    }
-
-    rrule = new RRule(rruleTemp.origOptions)
   } else if (typeof input === 'object' && input) { // non-null object
     let refined = { ...input } // copy
 
@@ -104,6 +96,7 @@ function parseRRule(input, dateEnv: DateEnv) {
     }
 
     rrule = new RRule(refined)
+    rrule.fromString = false
   }
 
   if (rrule) {