MoonScript (a language with a CoffeeScript-like syntax that transpiles to Lua) continues to be the most enjoyable programming language I have ever used.
It’s not the most practical choice for everything; I probably would choose something else for a big collaborative project. But it’s an absolute joy to use something that truly feels like “executable pseudocode”, like a simpler Python alternative with a bias towards functional programming. If you can grok Lua’s “tables for everything” model, then the MoonScript language guide should help you pick up the language in minutes.
If we had a “gradually typed” MoonScript to target Luau instead of Lua, I’d probably use it for everything.