Adjust typescript for redux-saga yield call type

saga-yield-call-return.ts

type StripEffects<T> = T extends IterableIterator<infer E>
  ? E extends Effect | SimpleEffect<any, any>
    ? never
    : E
  : never;

type DecideReturn<T> = T extends Promise<infer R>
  ? R // If it's a promise, return the promised type.
  : T extends IterableIterator<any>
  ? StripEffects<T> // If it's a generator, strip any effects to get the return type.
  : T; // Otherwise, it's a normal function and the return type is unaffected.


type CallReturnType<T extends (...args: any[]) => any> = DecideReturn<
  ReturnType<T>
>;

const aNumber: CallReturnType<typeof getANumber> = yield call(getANumber);
                                                  
// https://spin.atomicobject.com/2020/08/06/redux-saga-call-effect/