Angular | Vue | React | Redux | Rxjs Each library has its own unique design philosophy that broadly classifies into functional and object oriented design. I have a thorough understanding and a good experience in developing application using both functioan and object oriented design approach. Applications that I build are state oriented (built around state management library like Redux) that makes the application less errorneous and clean of side effects. While trying to keep my state and application manageable using design patterns, I always prefer writing tests before any logic. That helps the application become more stable at the time of production release.