is it possible to use lumo to build binaries from Clojure programs? If so how?

Top-level await is coming to the chrome dev tools: https://twitter.com/umaar/status/897408737694109697

Something like that for lumo would be awesome

@pesterhazy what do you mean

probably very easy to do with a macro

I think it requires support from the repl infrastructure

essentially this feature makes the prompt block until the (async) response comes back

as far as I understand it at least?

I mean this works today

(async () => `Homepage: ${(await fetch(location.href)).status}`)().then(console.log)

right

blocking will need extra support

otherwise it can be achieved

i'm curious how they handle a promise that never fires...

like:

(defn x []
  (js/Promise. (fn [resolve reject] (resolve 42))))

(js* "(async () => ~{}(await ~{}))();" js/console.log (x))

🤓

haha nice

^ can easily turn that into an await macro

that you call like (await js/console.log (x))

right

hm...

still not sync

what if lumo detected a promise as a return value and (optionally) awaited its result

for example, (await ...) could be a repl-special

that'd be amazing for experimenting with async apis which, honestly, is most apis in node

so (await (x)) would block until ^C or a promise resolution

(await) would be accepted only as a top level form

I guess similar to (require)?

@pesterhazy feel free to open an issue

that’d probably require some tinkering and refactoring

but sounds like a good idea

ok will do