Finding a compiler from your new language to your work language is a great way to practice this. I became interested in F# and found a F# to JS compiler. I ca

Finding a compiler from your new language to your work language is a great way to practice this. I became interested in F# and found a F# to JS compiler. I can write F# code and call it from JS and do it in any toy code or side project I have. This lets me lift up any JS or TS to F# to any degree I want across any project. That's an awesome environment to build in as I can experiment and learn more about the language just by rewriting code that is already figured out.