Safari 27 supports JSPI, a magic WebAssembly capability for sync native code to suspend on an async 𝙿𝚛𝚘𝚖𝚒𝚜𝚎. On http://fx.sh, libfx uses the built-in browser 𝚏𝚎𝚝𝚌𝚑 stack to make API calls. As more code goes native, I expect WebAssembly to play a huge role in the future of the web.