The design of WASI and the component model are layered, though: you could start with V8 and build a runtime with full WASI etc. support. In fact, Node.js and D

The design of WASI and the component model are layered, though: you could start with V8 and build a runtime with full WASI etc. support. In fact, Node.js and Deno have both done exactly that, a V8 core with layered APIs on top including WASI.