[tkubacki]

" offering little to nothing interesting that would make anyone switch from other solutions"

Huh ? Compared to JS - Dart seems like a heaven. Don't known Elm - but looking on syntax it seems it's not so easy to pick up as for someone with Java/C# background. It's true Dart is not another fancy lang - it's very pragmatic.

[mixedCase]

Compared to JS, yes. But it's not JS that Dart truly competes against, it's all the other compile-to-JS languages some of which I mentioned, and Dart simply can't beat their pragmatism and/or expresiveness.

Elm is deceptively easy since it has great docs, the best compiler errors in the entire industry (no exaggeration here) and skips all the voodoo incantations of pure functional programming favoring a familiar language instead. Took me a couple of days to start writing toy websites with it coming with no functional experience, and a week to be productive.

I'd suggest you take a look at some of the talks on Elm. This is a good one: https://www.youtube.com/watch?v=EDp6UmaA9CM

Anything by Richard Feldman is great, too.