   self
 NoKeySuppliedError::__proto__ = Error::
 
-WrongKeyNameSuppliedError = (key) ->
-  # Skriv ut vilka nycklar som finns
-  self = new Error "#{key} should be one of the following ..."
-  self.name = 'WrongKeyNameSuppliedError'
-  self.__proto__ = WrongKeyNameSuppliedError::
+InvalidKeyNameSuppliedError = (key) ->
+  self = new Error "The supplied key '#{key}' should be one of \
+                    the following #{availableKeys.join(', ')}"
+  self.name = 'InvalidKeyNameSuppliedError'
+  self.__proto__ = InvalidKeyNameSuppliedError::
   self
-WrongKeyNameSuppliedError::__proto__ = Error::
+InvalidKeyNameSuppliedError::__proto__ = Error::
 
 NoKeySuppliedForServiceError = (service) ->
   self = new Error "You have not supplied an API key for the #{service} service."


NoKeySuppliedError = ->
  self = new Error "You have to supply as least one API key."

  self
NoKeySuppliedForServiceError::__proto__ = Error::

InvalidKeyFormatSupplied = (service) ->
  self = new Error "..."
  self.name = 'InvalidKeyFormatSupplied'
  self.__proto__ = InvalidKeyFormatSupplied::
  self
InvalidKeyFormatSupplied::__proto__ = Error::

InvalidResponseFormatSuppliedError = (format) ->
  self = new Error "#{format} which you supplied is not supported. \
                    Use either #{availableFormats.join(', ')} or omit \
                    format completely to get the response as a JavaScript object."
  self.name = 'InvalidResponseFormatSuppliedError'
  self.__proto__ = InvalidResponseFormatSuppliedError::
  self
InvalidResponseFormatSuppliedError::__proto__ = Error::

module.exports =
  NoKeySuppliedError: NoKeySuppliedError
  InvalidKeyNameSuppliedError: InvalidKeyNameSuppliedError
  NoKeySuppliedForServiceError: NoKeySuppliedForServiceError
  InvalidResponseFormatSuppliedError: InvalidResponseFormatSuppliedError
  InvalidKeyFormatSupplied: InvalidKeyFormatSupplied
