[masklinn]

> Is there something special about Elm that gives you this kind of benefit

Evan cares about compiler messages, and as a result Elm's compiler errors are the most friendly, readable, helpful and actionable messages I know of, even compared with projects with good error messages like Clang or Rust.

Most other typed functional languages don't come even remotely close, best case scenario is they're fairly complete once you've learned to decrypt them, Elm's compiler error messages have almost no learning curve. Though it may help that Elm is wilfully limited abstraction-wise.