Emit unhandled rejection events in Node

[benjamingr]

Hey, I've written the following proposal here: https://gist.github.com/benjamingr/0237932cee84712951a2

I'd love your feedback.

[ForbesLindesay]

I have no particular objection to this. I would suggest submitting a pull request to add this spec as the readme for https://github.com/promises-aplus/unhandled-rejections-spec so it can be discussed by the Promises A+ community. If it is accepted there, I will definitely implement it.

[benjamingr]

Bluebird added this and RSVP and es6promise are adding this soon. iojs said they're interested in the idea and are positively considering it.

I don't think this belongs to the spec since it's a node-only feature.

[benjamingr]

Updating that io.js pull request has been made - this will likely land in the next version and is being discussed in the TC meeting for approval.

[benjamingr]

Now in io.js, please consider adding it for compatibility.

[johnhaley81]

👍 to this

[jtfairbank]

+1, no errors are thrown in node which makes debugging super hard

[benjamingr]

Now in Q, you guys and RSVP are the only ones left - you can see the Q PR this is not a lot of code to add and it solves a problem for many users - please consider.

[benjamingr]

Now in native promises, this is now a divergence from the native NodeJS behavior.

[art-in]

for those who stuck to catch unhandled rejections with then/promise.
Take a look at non standard .done() method. Maybe it will save you as it saved me..

promise
    .then(function() {
        throw 'BOOM'
    })
    .done() // exception thrown outside

[benjamingr]

Or use one of the libraries that implements this.

[benjamingr]

@ForbesLindesay ping, both browsers and Node emit these events now for a while. The adjustments to the ES spec has even been done tc39/ecma262#76

Any chance this will work in then/promise?