EventEmitter2 is not handling throw exception and closing app

[Mupli]

My expectation is that if an error is thrown within an event listener it should be handled by EE2 and app will not be closed . or we will be able to handle using try catch ? So it is not the case here.

In EE node:events they use 'error' handler for this case

old ee examples:

ee.on('error', function (err) {
    console.log(err);
});

ee.on('some.other.event', async function () {
    throw Error('blah');
});

ee.emit('some.other.event');

[mathulbrich]

Same issue here. But it seems to be possible to catch the error when we use emitAsync method.

[elcrostatina]

Same issue here. But it seems to be possible to catch the error when we use emitAsync method.

same here. Could you please show me an example of how you manage to make it work with emitAsync ?

[mathulbrich]

Same issue here. But it seems to be possible to catch the error when we use emitAsync method.

same here. Could you please show me an example of how you manage to make it work with emitAsync ?

Basically just doing a catch on your emitAsync call. It seems that with emitAsync is possible to catch errors, but with just emit isn't.

try {
    ee.emit("some.other.event");
} catch {
    console.log("catched!");
}
// Output: Error: blah

try {
    await ee.emitAsync("some.other.event");
} catch {
    console.log("catched!");
}
// Output: catched!

[mathulbrich]

Oh, I have realized some tests here and identified that this problem only occours because the callback for some.other.event is a async function, but the emit have a sync behavior. So this problem is more about an unhandled Promise, not a bug at all.