[K0nserv]

My understanding is that the main limitation is technical. WASM doens't do GC or the host system calling conventions and cannot interact directly with object from Javascript because of this. However, this is being worked[0] on and will be solved eventually. Even without this, the performance overhead of bridging to JS is low enough that WASM frameworks can beat out React.

0: https://github.com/WebAssembly/gc/blob/main/proposals/gc/Ove...

[davexunit]

In addition to GC, the stringref extension is another crucial one for enabling easy interop with JS. Fingers crossed that both make it past the finish line. GC seems pretty much certain, but not sure about stringref.