Exceptions

Exception

All exeptions are available in th object : Fmk.Helpers.Exceptions or Focus.Helpers.Exceptions See file

• ** ArgumentNullException ** => To use when a propery is null and shouldn't be
• ** ArgumentInvalidException ** => To use when a propery is not null but has the wrong value or the wrong type.
• ** NotImplementedException ** => To use when a function is not implemented
• ** DependencyException ** => To use when a dependency is missing

They all have a similar signature. Exception(message, context)

var ArgumentInvalidException =  Fmk.Helpers.Exceptions.ArgumentInvalidException;
function saveObject(jsonObject){
  if(!_.isObject(jsonObject)){
     throw new ArgumentInvalidException(
                 "jsonObject should be an object",
                 jsonObject
               );
  }
}

Really often these Exceptions should be use after testing properties with underscore. All types has a function associated:

• isObject
• isNumber
• isString
• ...

Candidates for all these type checking are the services. Each parameter of a service should be tested.