JSPI wraps calls from WASM to JS with "await" when promises are involved. So your C/Rust functions can now call async JS functions and it just works. Details:

JSPI wraps calls from WASM to JS with "await" when promises are involved. So your C/Rust functions can now call async JS functions and it just works. Details: https://v8.dev/blog/jspi https://v8.dev/blog/jspi