[iamwil]

how come Lunatic supports both wasmtime and wasmer? Why those two runtimes and why not some other one like wasm3?

I'm not for or against any of them. I'm just wondering what criteria there was in choosing those two rather than any others, since I only have a cursory overview of the different WASM runtimes.

[withtypes]

Wasmtime/Wasmer are both written in Rust so it was easy to integrate them. By the way, Wasm3 is an interpreter, not a JIT compiler, but this also has some use cases! For example, running an instance from “cold storage” requires a JIT compilation step which might take more time then just interpreting it. It would be cool to have a fast interpret like Wasm3 too.

We’ve created a crate “uptown_funk” which enables us to write Rust code which easily integrates with both Wasmer and Wasmtime. It was very helpful in implementing WASI and it takes a little bit different approach than Wasmer and Wasmtime. Regarding, Wasmer vs. Wasmtime, we don’t have a preference yet, both are great!