Grain: A strongly-typed functional programming language for the modern web
The main page doesn't do a great job of showing what's interesting about Grain vs. JavaScript. The only hint is this: "No runtime exceptions, ever. Every bit of Grain you write is thoroughly sifted for type errors, with no need for any type annotations."Maybe show some examples of errors Grain would catch that JavaScript wouldn't, like Elm does: http://elm-lang.org/