1636590 - Provide an exception stack for uncaught promises rejections

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, enhancement)

Comment 1

[Tom S [:evilpie]]

Attachment: Bug 1636590 - Provide an exception stack for uncaught promises rejections. r?baku

This will improve error message information when the rejection value is not an erorr object.

Comment 2

[Nicolas Chevobbe [:nchevobbe]]

could we use this bug to put a isPromise or something similar on the nsIScriptError so we can surface it in the console (like they do in Chrome), or should we open another bug for that ?

Comment 3

[Tom S [:evilpie]]

Attachment: Bug 1636590 - Add a test suite for nsIScriptError. r?baku

This makes is easier to actually assert that we have the right exception value.
We do have similar tests already, but most of them aren't based directly
on nsIScriptError.

Depends on D74479

Comment 4

[Tom S [:evilpie]]

https://treeherder.mozilla.org/#/jobs?repo=try&revision=dfc8cfa5706af094161e3675239027f4320303c2

Seems like there is at least on failure:

devtools/client/webconsole/test/browser/browser_webconsole_stubs_page_error.js | Uncaught exception - at chrome://mochitests/content/browser/devtools/client/webconsole/test/browser/stub-generator-helpers.js:218 - TypeError: can't access property 0, existingPacket.pageError.stacktrace is null

Comment 5

[Tom S [:evilpie]]

Attachment: Bug 1636590 - Expose isPromiseRejection on nsIScriptError. r?baku

Comment 6

[Tom S [:evilpie]]

I can't figure out how to update stubs_page_error. ./mach test devtools/client/webconsole/test/browser/browser_webconsole_stubs_page_error.js --headless --setenv WEBCONSOLE_STUBS_UPDATE=true didn't work.

Comment 7

[Nicolas Chevobbe [:nchevobbe]]

(In reply to Tom Schuster [:evilpie] from comment #6)

I can't figure out how to update stubs_page_error. ./mach test devtools/client/webconsole/test/browser/browser_webconsole_stubs_page_error.js --headless --setenv WEBCONSOLE_STUBS_UPDATE=true didn't work.

what do you mean by "didn't work"? Does the test fail, or does it fail to update the pageError.js stub file?

Comment 8

[Nicolas Chevobbe [:nchevobbe]]

We should probably check that the stacktrace exists for those error messages. You can base it on top of https://phabricator.services.mozilla.com/D71288#change-Yv8sr879jfhE maybe?

Comment 9

[Tom S [:evilpie]]

Attachment: Bug 1636590 - Update devtools page stubs. r?nchevobbe

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/42093ee9895d
Provide an exception stack for uncaught promises rejections. r=baku
https://hg.mozilla.org/integration/autoland/rev/03969758e9c9
Add a test suite for nsIScriptError. r=baku
https://hg.mozilla.org/integration/autoland/rev/e64a08c79bc7
Expose isPromiseRejection on nsIScriptError. r=baku
https://hg.mozilla.org/integration/autoland/rev/b2881b76bd3b
Update devtools page stubs. r=nchevobbe

Comment 11

[Cristian Brindusan [:cbrindusan]]

https://hg.mozilla.org/mozilla-central/rev/42093ee9895d
https://hg.mozilla.org/mozilla-central/rev/03969758e9c9
https://hg.mozilla.org/mozilla-central/rev/e64a08c79bc7
https://hg.mozilla.org/mozilla-central/rev/b2881b76bd3b