[osullivj]

Strongly agree from an Emscripten C++ wasm pov: it's key to minimise emscripten::val roundtrips. Caches must be designed for rectilinear data geometry, and SharedArrayBuffers are the way for bulk data. But only JS allows us to express asynchrony, so we need an on_completion callback design at the lang boundary.

[tankenmate]

Indeed a whole class of issues become moot if you just don't use javascript anywhere. In the browser world this is obviously difficult/impossible; I look forward to the day when WASM can run natively in a browser and doesn't need javascript at all, DOM, network, etc, etc. On the server side? Just steer clear of the javascript ecosystem altogether.