[fathyb]

I didn't know browser vendors supported WASI! I said that as some of us do not use WASI at all, just WebAssembly itself, so they can save some time by not reading this if they're not interested in WASI and/or its limitations.

[Arnavion]

Browsers don't have any built-in support for WASI. It's up to the web page to define those as exports for WASI-expecting WASM modules to import.