How to use InnerSubscriber, OuterSubscriber, subscribeToResult in RXJs 7

[srinivasganaparthi]

Hi we are currently using InnerSubscriber, OuterSubscriber, subscribeToResult, isPromise from 'rxjs/internal-compatibility'

// import { InnerSubscriber, OuterSubscriber, subscribeToResult, isPromise } from 'rxjs/internal-compatibility';

could not find with RXjs 7

please let me know from where I can use all of them.