What happens when an async function is imported?

[Pyrolistical]

For example, if we modify the function import example and make getCount async.

;; main.wat --> main.wasm
(module
  (import "./counter.js" "getCount" (func $getCount (func (result i32))))
)

// counter.js
async function getCount() {
    const response = await fetch('//api/get-count');
    ...
    return count;
}
export {getCount};

Given existing behaviour, it would crash at runtime. But should we do better?

Should this rely on or interact with https://github.com/WebAssembly/js-promise-integration?