export interface FunctorInterface<T> {
    /**
     * map :: Functor f => f a ~> (a -> b) -> f b
     * @param {(e: T) => TNewResult} f
     * @returns {FunctorInterface<TNewResult>}
     */
    map<TNewResult>(f: (e: T) => TNewResult): FunctorInterface<TNewResult>;
}