IT bruise

I am a Front End Developer with over 10 years of experience in HTML, CSS and JS. I have experience in various fields: social networks, accounting, real estate and a messenger like Telegram. The technical requirements for these projects are very different: adaptability, sockets, service worker caching, endless push notifications, and even code reusability between the Web version and React Native. All these tasks can be solved in different ways, and I want to share my personal set of best practices.