typeerrors when using typescript 2.4.0

[veeramarni]

We are seeing typeerrors after upgrading typescript to 2.4.0 version in our project

RxJS version: 5.4.0

Code to reproduce:
When we upgrade the project to typescript@2.4.0 we getting these errors but we don't see them in version 2.3.0
Expected behavior:
No errors
Actual behavior:

[at-loader] ./node_modules/rxjs/Subject.d.ts:16:22
    TS2415: Class 'Subject<T>' incorrectly extends base class 'Observable<T>'.
  Types of property 'lift' are incompatible.
    Type '<R>(operator: Operator<T, R>) => Observable<T>' is not assignable to type '<R>(operator: Operator<T, R>) => Observable<R>'.
      Type 'Observable<T>' is not assignable to type 'Observable<R>'.
        Type 'T' is not assignable to type 'R'.

[at-loader] ./node_modules/rxjs/observable/dom/WebSocketSubject.d.ts:24:22
    TS2415: Class 'WebSocketSubject<T>' incorrectly extends base class 'AnonymousSubject<T>'.
  Types of property 'lift' are incompatible.
    Type '<R>(operator: Operator<T, R>) => WebSocketSubject<R>' is not assignable to type '<R>(operator: Operator<T, R>) => Observable<T>'.
      Type 'WebSocketSubject<R>' is not assignable to type 'Observable<T>'.
        Types of property 'operator' are incompatible.
          Type 'Operator<any, R>' is not assignable to type 'Operator<any, T>'.
            Type 'R' is not assignable to type 'T'.

Additional information:

[kwonoj]

dupe of #2699 , #2539, #2700 . #2701 #2702 #2703 #2704 #2705 #2706 #2707

[amitgaur208]

This problem is not solved using version change of typescript please help.

[lock]

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