Calling a func with an async operation fails

[terrablue]

The following code works:

await vm.evalAsync(`
    puts "step 1"
    JS.global.fetch("https://example.com").await
    puts "step 3"
`);

However, the following code fails with the error

RbError: /usr/local/lib/ruby/site_ruby/3.2.0/js.rb:86:in `await': JS::Object#await can be called only from RubyVM#evalAsync JS API`

const result = await vm.evalAsync(`
  def foo()
    puts "step 1"
    JS.global.fetch("https://example.com").await
    puts "step 3"
  end
`)
await result.call("foo")

Is there a way to define a function, call it later (from JS), and still use async operations?

In my use case, I'm precompiling framework routes, and executing them with (different) requests.

[kateinoigakukun]

It's a missing piece of the current @ruby/wasm-wasi JS API. We will support asyncCall or something like that. Until that, you need to use evalAsync to call the function. Of course, contribution is welcome :)