duhduhdan

/**
 * Future denotes a value that will occur after a certain amount of time
 * Is a Functor:
 *  - type acting as context for other types
 *  - can apply normal function inside
 * Is a Monad:
 *  - lifts a normal value to a Monadic one (Future.of)
 *  - chains 2 consecutive operations (Future.prototype.flatMap)
 */
class Future {