 
 exports.contains = (a, b) ->
 
-  a.filter (x) -> b.includes x
+  return a.filter (x) -> b.includes x
 
 
 ###*

exports.zipObject = (keys, values) ->

  o = {}

 * Drop item from array
 *
 * @param {Array} array array from we dropping
 * @param {String / Number} item Item we want drop
 * @return {Array} New array that no longer contain the item
###

exports.drop = (array, item) ->

  return array.filter (x) -> x isnt item