This is a great tip, I personally found a lot of growth when looking into frameworks/languages in a much more extensive look rather than just see the features from the outside. Dissecting each class, function and even down to single lines of code to know how things are running is crucial nowadays to stand out. It’s sad but the new generation of developers under estimate the power of that yet there are magical things to be discovered when you get that deep into a language.
This was an excellent read. Thank you for sharing!