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function isObservableProp(prop: any): boolean;

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import { observe, transform, selector } from 'react-observing';
const counter = observe(0);
const counterTransformed = transform(
  counter,
  value => value * 2,
  value => value / 2,
);
const derivedCounter = selector({
  get: ({ get }) => {
    const counterValue = get(counter);
    const counterTransformedValue = get(counterTransformed);
    return counterValue * counterTransformedValue;
  },
  set: ({ get, set }, newValue) => {
    const counterValue = get(counter);
    const counterTransformedValue = get(counterTransformed);
    set(counter, counterValue / newValue);
    set(counterTransformed, counterTransformedValue / newValue);
  },
});
isObservableProp(counter); // true
isObservableProp(counterTransformed); // true
isObservableProp(derivedCounter); // true
isObservableProp(5); // false
isObservableProp({}); // false