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Show HN: Scala-ts – Scala to TypeScript compiler
- sjrd 10y agoTo dispel misconceptions: from the top of the readme: "scala-ts is a simple tool which can generate TypeScript interfaces and classes from Scala case classes." Not really what I call a compiler. This is more a REST endpoint consumer generator. PS: for the reverse exercise, here is a syntactical TypeScript to Scala translator: https://github.com/densh/TypeScript/tree/topic/scala-emitter?files=1 https://github.com/densh/TypeScript/tree/topic/scala-emitter...
- pyrophane 10y agoAh, thank you. I was already trying to figure out the why I would need to compile my Scala down to typescript, presumably so I could then compile that down to JavaScript
- sjrd 10y agoIf you want to compile your Scala code to JavaScript, there's already a widely accepted and stable solution: https://www.scala-js.org/ https://www.scala-js.org/
- agentgt 10y agoFunny thing is you don't even need a compiler to do what the project is ostensibly doing which is just stub generation aka struct type mapping (i.e. data objects). You can use reflection (you only have to do it once so its not slow). I have done this with Java (use reflection to generate JavaScript stubs).
- clhodapp 10y agoReflection APIs and compiler internals actually tend to be quite similar. In the case of Scala in particular, the reflection API was literally produced by scooping out part of the compiler into a separate library and trying to polish (or hide) the rough edges. The effort wasn't entirely successful in producing an easy-to-use API, but the in-development successor project, scala.meta, is still very compiler-y (just because, again, compiler internals tend to look a lot like reflection APIs). Further, it is my belief that your project actually was a compiler, whether you thought of it as that or not!
- lmm 10y agoIt's a compiler but not a Scala compiler. Rather it's a compiler for a smaller language, whether one thinks of and names that language or not. (I actually recommend pushing that line of thought all the way through, and using something like thrift (with Scrooge) for this kind of problem. The thrift compiler is a compiler and the thrift IDL is a defined and specified language rather than an ad-hoc subset of Scala)
- wmil 10y agoLet me ask the obvious. Can this generate TSX from Scala?
- manojlds 10y agoShould have opened the link: scala-ts is a simple tool which can generate TypeScript interfaces and classes from Scala case classes
- joostdevries 10y agoI love using Scala on the server and Typescript in the browser. And adjusting ts type definitions by hand gets tiresome very quickly. So I look forward to trying this out.
- mi100hael 10y agoHandy if you're already serializing case classes to be consumed by a TypeScript frontend, but otherwise I'd suggest looking into Scala.js.
- thelarry 10y agoIs this any better than scala.js?
- sjrd 10y agoNo. To be more precise, it does a completely different job. As I said in another comment, it isn't actually a Scala compiler. Comparing it to Scala.js is nonsense to begin with.