rxjs-compat@6 operator switchMap without resultSelector

[alekzonder]

Bug Report

Current Behavior

• rxjs@5 switchMap has resultSelector argument
• rxjs@6 switchMap has resultSelector argument

but rxjs-compat@6 switchMap has no resultSelector argument

Why?

Reproduction

code example links above

Expected behavior
compatibility package breaks compatibility

Environment

• Runtime: Chrome 70
• RxJS version: 6.5.3

Possible Solution

add resultSelector argument in rxjs-compat package for operators:

mergeMap()
mergeMapTo()
concatMap()
concatMapTo()
switchMap
switchMapTo()
exhaustMap()
forkJoin()
zip()
combineLatest()
fromEvent()

[benlesh]

Hi @alekzonder — thank you for taking the time to open this issue and for sharing your thoughtful feedback with the RxJS project. I’m sorry it took us so long to respond. Given how much time has passed and the lack of recent activity, I’m going to close this for now so the tracker reflects the work we’re likely to act on. If this is still relevant on a current RxJS release, please feel welcome to open a new issue with updated context and a reproduction. Thank you again for your contribution and patience.

— Ben