fixup! fix(types): support union type returns from catchError
fixup! fix(types): support union type returns from catchError

ReactiveX/rxjs,martinsik/rxjs,kwonoj/RxJS,benlesh/RxJS,Brocco/RxJS,trxcllnt/RxJS,benlesh/RxJS,ReactiveX/RxJS,ReactiveX/RxJS,trxcllnt/RxJS,kwonoj/RxJS,Brocco/RxJS,ReactiveX/RxJS,Brocco/RxJS,martinsik/rxjs,martinsik/rxjs,benlesh/RxJS,ReactiveX/RxJS,kwonoj/RxJS,martinsik/rxjs,benlesh/RxJS,ReactiveX/rxjs,trxcllnt/RxJS,trxcllnt/RxJS,kwonoj/RxJS,ReactiveX/rxjs,Brocco/RxJS,ReactiveX/rxjs