[goatlover]

It runs successfully in Chrome returning:

  foo {<suspended>}

That's the craziest statement I've ever seen!

[jastanton → goatlover]

That's because a generator is being returned from `foo` (the yield syntax gives you this).

Try calling next() on the return value of foo.

I get:

  Promise {<rejected>: TypeError: Class extends value async function () {} is not a constructor or null
    at foo