Use the serviceName instead of a raw string. Also, specify a module dependency on the notification module.
Use the serviceName instead of a raw string. Also, specify a module dependency on the notification module.

SamGraber/TypeScript-Angular-Utilities,SamGraber/TypeScript-Angular-Utilities,RenovoSolutions/TypeScript-Angular-Utilities,RenovoSolutions/TypeScript-Angular-Utilities