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Elm vs PureScript: What are the differences?
What is Elm? A type inferred, functional reactive language that compiles to HTML, CSS, and JavaScript. Writing HTML apps is super easy with elm-lang/html. Not only does it render extremely fast, it also quietly guides you towards well-architected code.
What is PureScript? A strongly-typed language that compiles to Javascript. A small strongly typed programming language with expressive types that compiles to JavaScript, written in and inspired by Haskell.
Elm and PureScript are primarily classified as "Languages" and "Templating Languages & Extensions" tools respectively.
Elm and PureScript are both open source tools. It seems that PureScript with 5.86K GitHub stars and 427 forks on GitHub has more adoption than Elm with 5.3K GitHub stars and 424 GitHub forks.
Pros of Elm
- Code stays clean44
- Great type system42
- No Runtime Exceptions40
- Fun33
- Easy to understand28
- Type safety22
- Correctness22
- JS fatigue16
- Declarative12
- Ecosystem agrees on one Application Architecture12
- Friendly compiler messages10
- Fast rendering8
- Welcoming community7
- If it compiles, it runs7
- Stable ecosystem5
- 'Batteries included'4
- Package.elm-lang.org2
Pros of PureScript
- Purely functional4
- Great FFI to JavaScript2
- Alternate backends1
- More Haskell-ish than Haskell0
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Cons of Elm
- No typeclasses -> repitition (i.e. map has 130versions)2
- JS interoperability a bit more involved2
- Backwards compability breaks between releases1
- More code is required1
- Main developer enforces "the correct" style hard1
- JS interop can not be async1
- No communication with users1
Cons of PureScript
- Have Some Bugs1