FWIW co/koa still don't entirely solve the problem, there's really no way 
to completely solve it without coroutines with separate stacks, but co 
mitigates it quite a bit, you'd normally have to inline 4-5 try/catches if 
you REALLY wanted to be robust but co() effectively does that for you

On Sunday, 27 October 2013 07:30:14 UTC-7, Peter Rust wrote:
>
> Benjamin,
>
> You may find TJ Holowaychuk's Koa.js 
> <https://github.com/koajs/koa>interesting -- middleware using generators. 
> Apparently there are big 
> performance benefits and you can catch both sync and async errors with 
> try/catch... but as others have said, it's experimental: you have to be on 
> the latest (unstable) release of node and you have to enable generators in 
> v8 with a command-line flag.
>
> You've probably read the official 
> warning<http://nodejs.org/api/domain.html#domain_warning_don_t_ignore_errors>about
>  using domains as a way to ignore errors, but I figured I'd post a 
> link just in case.
>
> Regarding domains, in The Future of Programming in 
> Node.js<https://groups.google.com/forum/#!searchin/nodejs/domains/nodejs/9afurRCTlOc/GvlFNmm_AtAJ>,
>  
> isaacs said:
>
> > Domains will be refactored to support more generic 
> > continuation-tracking systems, to enable alternative error-handling 
> > mechanisms in userland.  Eventually the Domain module will be a thing 
> > that could be done in userland, but it will continue to be bundled 
> > with the Node binary.
>
> Personally, I'm excited about this low-level hook because it should make 
> it possible to implement automatic long-stack traces without hacks (though 
> this is probably something you would want to have only in debug mode due to 
> the performance implications). It might even make it possible to avoid 
> littering the code with "if (err) return cb(err)" (or d.intercept) at ever 
> layer of asynchrony -- that would be quite nice.
>

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