Are Promises supported (asynchronous callbacks)?

[pkrukp]

Hi,

I'm trying to figure out if I can do sax.createStream().on("opentag", async (node) => { ... - will sax wait for Promise returned by the callback?

I searched code on github for "Promise", "then", "catch" but found nothing, so I suppose it won't?

[dobromyslov]

Yes. But if your async callback has nested promises and awaits for them then you will struggle Events-vs-Promises execution order because sax-js will not pause generation of new events. And there is no pause method to stop events. Even readable stream pause method will not help to achieve synchronous processing.

[dobromyslov]

@pkruk2 have a look at this solution: lddubeau/saxes#32 (comment)