var f = R.pipe(Math.pow, R.negate, R.inc);

f(3, 4); // -(3^4) + 1

//  parseJson :: String -> Maybe *
//  get :: String -> Object -> Maybe *

//  getStateCode :: Maybe String -> Maybe String
var getStateCode = R.pipeK(
  parseJson,
  get("user"),
  get("address"),
  get("state"),
  R.compose(Maybe.of, R.toUpper),
);

getStateCode('{"user":{"address":{"state":"ny"}}}');
//=> Just('NY')
getStateCode("[Invalid JSON]");
//=> Nothing()

//  followersForUser :: String -> Promise [User]
var followersForUser = R.pipeP(db.getUserById, db.getFollowers);