I think it wouldn’t even need to be a wasm task to cache these things. If the runtime is downloaded as a separate module, the browsers http cache should already

I think it wouldn’t even need to be a wasm task to cache these things. If the runtime is downloaded as a separate module, the browsers http cache should already do the job. What wasm might be able to do in addition is having a carved version of loaded runtime available in order to reduce startup times.