Maybe monad in Javascript

maybe-monad.js

function maybe(value) {
  var obj = null;
  function isEmpty() { return value === undefined || value === null }
  function nonEmpty() { return !isEmpty() }
  obj = {
    map: function (f) { return isEmpty() ? obj : maybe(f(value)) },
    getOrElse: function (n) { return isEmpty() ? n : value },
    isEmpty: isEmpty,
    nonEmpty: nonEmpty
  }
  return obj;
}

No Martini, no party. No bind, no monad. You may call it flatMap, but fixItOrElse("wrong, wrong, wrong")
@ptnplanet in this case return is maybe(value) itself

I think this is just a functor no?

@andyhd just created something similar to this for node called Giftbox here. Would love to hear your thoughts/feedback! Also motivated by Scala :)

@Muzietto, lol ! how true :)