The book consistently addresses all aspects of j & # 097; vascript code production, from architecture selection and code design to unit test coverage, debugging, integration testing, assembly, and continuous delivery of your code. Both general points are considered - setting the development process, event-oriented architecture of j & # 097; vascript applications, continuous integration technique, and extremely specific questions - how and what tools (frameworks) to use for a particular task, what specific needs to be done in a particular case, what errors are encountered.