This is awesome, I'm incredibly happy to see more alternatives on the Javascript Runtime Space!
In a nutshell: LLRT aims to have incredibly fast startup times compared to Node, Bun or Deno (which is critical in Lambda environments).
LLRT is built using Rust, Tokio and QuickJS under the hood. Here's their compatibility with Node.js APIs [1]
We (at Wasmer), have been working on a very similar approach: WinterJS, which is using SpiderMonkey instead (but also built on top of Rust and Tokio) [2]. HN announcement was just three months ago [3]
Really excited to see how the ecosystem is evolving!
[1] https://github.com/awslabs/llrt?tab=readme-ov-file#compatibi...