Ability to catch asynchronous runtime errors

[AlexMath23]

Hi, we are currently using lvgljs with the txiki.js runtime. A nice certainty for us would to be to know that we can catch thrown runtime errors 100% of the time. But unfortunately in txiki.js we only have that certainty for the synchronous ones ( with React Error Boundary). If 3rd party libraries throw async errors in promises without proper catch blocks those will slip by. In the browser / node you can handle these async, uncaught errors on a global level like this.


But this doesn't seem to be possible in txiki.js
To me it seems like a nice feature to have so you can have absolute protection from runtime errors / ways to recover in critical systems.

[saghul]

You can do this:

window.addEventListener('unhandledrejection', event => {
    // TODO: handle an async rejection.
});

[AlexMath23]

hi @saghul , I already tried a few of these, none seem to work.

[saghul]

Only the first one is implemented. I see that you really asked about exceptions, not rejections 😅 . I hope to implement the error event in a similar way.

[AlexMath23]

That's great to hear ! thanks for all the great work btw, I really like the runtime