Nowadays, we usually work with frameworks when we want to set up a frontend application. We enter the terminal and enter something like ng new my-app or npx create-react-app my-app. The cli works it’s magic and sets up an entire application with a whole lot of stuff included. We’re good to go. But what if you just want to build something simple? What if you want to build an app that simply doesn’t have a lot of logic, and doesn’t need a complete framework, like a portfolio website. Or, what if you want to challenge yourself and see if you can build something worthwhile without a framework?

Until recently I’ve found unsubscribing to be a confusing subject. Apparently, you have to unsubscribe if you want to avoid memory leaks. But NOT doing so doesn’t always result in a memory leak. So what causes these leaks and how can we avoid them?