Promise<void> in non-async function

[edemaine]

I have a real-world example where I have a function with return value Promise<void>, yet I want implicit return, because I construct the Promise explicitly via new Promise. This code breaks with modern Civet which turns off implicit returns when the return value is Promise<void>.

I think a Promise<void> return value should turn off implicit returns only for functions that are async, either explicitly or implicitly because of await. This function isn't async and that's causing a problem.