What we learned building a Rust runtime for TypeScript

(encore.dev)

83 points | by vinhnx 5 days ago ago

19 comments

  • owenpalmer 2 days ago ago

    I can't seem to tell exactly what they built. They call it a runtime, but they're using NodeJS?

    Did they implement a transpiler in Rust?

    They also seem to be calling Rust from JS, but not through wasm...

    They seem to be doing something with Rust and http, but they're also just using "Pingora"...

    Additionally, their homepage is about 20 fps while scrolling on my phone (pixel 4a, brave)

    I would honestly love for someone to explain to me wtf is going on.

    • wmf 2 days ago ago

      Looks like a Node.js wrapper.

  • caditinpiscinam 2 days ago ago

    UI note in case the creators of this site are reading: having a right-click on the site logo open a special logo-download menu is probably the wrong choice. If I right click on your site logo it's because I want to open your homepage in a new tab while keeping the original blog post open. The current behavior is unexpected and makes it hard to navigate the site.

    • airstrike 2 days ago ago

      Ctrl+Click or Cmd+Click to open in a new tab?

      I for one loved the context menu on logos

  • a day ago ago
    [deleted]
  • jauntywundrkind 2 days ago ago

    Very side note, but really liking seeing Elysia so close to the top on the benchmark list.

    I've been using it, and pointing my LLM's to it as example code, because it's type system is so so much better than Hono's. https://elysiajs.com/

    I didn't know that it was also flipping fast as frell. (Encore's benchmark is showing them as faster still, of course!)

    • speak_on 2 days ago ago

      Type system via a single schema looks similar to Hono+OpenApi+RPC, or is there a different advantage?

      • pier25 2 days ago ago

        Maybe I'm wrong but it seems more like Hono+Zod

        • speak_on 2 days ago ago

          The parts where responses have schema-consistent types (OpenApi) and the same types can be used on the client without extra work (RPC) are outside of Zod.

    • pier25 2 days ago ago

      > because it's type system is so so much better than Hono's

      Can you elaborate?

  • xbar 2 days ago ago

    I like the seeing the avoidance of generics hell. Traitsmaxxing.

  • mavelikara 21 hours ago ago

    What is meant by snapshot testing in this context?

  • 2 days ago ago
    [deleted]
  • waterTanuki 2 days ago ago

    > First, we knew we wanted to extend Encore to more languages over time, and we'd seen projects like Prisma and Pydantic successfully use a Rust core with bindings into Node.js and Python respectively.

    On an unrelated note Prisma decided to rewrite their Rust core in Typescript. https://www.prisma.io/blog/from-rust-to-typescript-a-new-cha...

    • pjmlp a day ago ago

      Because in real life deployments, outside of winning benchmarking charts, a JIT is fast enough, and the burden of multiple languages cake layer isn't worth the trouble.

      Thanks for sharing the link.

      • re-thc a day ago ago

        > outside of winning benchmarking charts

        Prisma didn’t win the benchmark charts either.

        • pjmlp a day ago ago

          Yes, and?

          That was the point, delivering business value within a specific set of KPIs makes more sense than winning benchmarks, if the outcome remains the same.