Introduction Gleam is a newish programming language that I recently stumbled upon. It is so little-known that there aren’t really any tutorials available on it (even on the official documentation), so I decided to write my own. Gleam transpiles to Javascript and Erlang. I’ll be focusing my attention on the Erlang side of things, as it is more mature. And to be honest, I don’t feel any reason to replace Rescript, my go-to transpires-to-Javascript language.