React version 16.5.0 has been released and one of the features that it supports is the new Profiler in the React Developer Tools. In the above video and following blog post, we will update an existing app to ⚛ React 16.5.0 and show off various features of the new Profiler. The tool can record a lot of information from your React App, but you can also add interaction tracking to help track user generated events.
It’s handy to inspect an element in your browser’s DevTools when you need to experiment or tweak it’s styles, however, it can be very tricky to try and inspect an element if it only shows up when it’s being hovered or if it disappears when it loses focus. Thankfully, there is a handy little trick using setTimeout and debugger that makes inspecting such elements much easier.