What we learned building a Rust runtime for TypeScript

by vinhnx • 3 months ago

83 18 3 months 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!)

pier252• 3 months ago

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

Can you elaborate?

jauntywundrkind2• 3 months ago

I wish I had a better encapsulation, a better anecdote, that shared the improvement I've felt nicely.

Elysia does have a write up on how they compare to Hono. Their sound type safety section helps show some differences: https://elysiajs.com/migrate/from-hono.html#sound-type-safet...

speak_on2• 3 months ago

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

pier252• 3 months ago

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

caditinpiscinam• 3 months 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• 3 months ago

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

I for one loved the context menu on logos

owenpalmer2• 3 months 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• 3 months ago

Looks like a Node.js wrapper.

owenpalmer2• 3 months ago

That does what?

xbar• 3 months ago

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

waterTanuki• 3 months 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...

pjmlp2• 3 months 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-thc2• 3 months ago

outside of winning benchmarking charts

Prisma didn’t win the benchmark charts either.

mavelikara• 3 months ago

What is meant by snapshot testing in this context?

What we learned building a Rust runtime for TypeScript

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