Totally not a js dev. I'm using a js lib (puppeteer) that needs `const browser = await puppeteer.la...

# javascript

[coletz]

Totally not a js dev.
I'm using a js lib (puppeteer) that needs const browser = await puppeteer.launch().
My issue is that I can't use await with kotlin js, and I don't know if "await" is just syntactic sugar for a callback (sort of stuff done on Java with coroutines)

[Casey Brooks]

Check out this gist, and the related forum thread https://gist.github.com/nosix/5994e53d5bef20292b998d6690649dc1 https://discuss.kotlinlang.org/t/async-await-on-the-client-javascript/2412/3

[Casey Brooks]

In JS, async/await is pretty much just syntactic sugar over the Promises API https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function. So if puppeteer.launch() needs to be awaited, it really just returns a Promise object, and you can then wrap that up in a Kotlin coroutine

[coletz]

Thanks, that's exactly what I was looking for

[gildor]

You can use kotlinx.coroutines to have await() extension for promises
https://github.com/Kotlin/kotlinx.coroutines/blob/master/js/kotlinx-coroutines-core-js/src/Promise.kt#L113