'Uncaught TypeError: Cannot set property stack of [object Object] which has only a getter' with Angular

[matthewsorenson-tr]

Hi, I observed this error when migrating to Angular RC6 with zone.js 0.6.17.
Error:

long-stack-trace-zone.js:135
Uncaught TypeError: Cannot set property stack of [object Object] which has only a getter
onHandleError @ long-stack-trace-zone.js:135
ZoneDelegate.handleError @ zone.js:336
onHandleError @ ng_zone_impl.js:60
ZoneDelegate.handleError @ zone.js:336
Zone.runTask @ zone.js:268
ZoneTask.invoke @ zone.js:433

I see that the error caught on zone.js:267 is a ViewWrappedError (which has a proto chain of WrappedError -> BaseError -> Error -> Object). On long-stack-trace-zone.js:123, descriptor ends up as null, which leads to long-stack-trace-zone.js:135, where error.stack cannot be set since WrappedError used Object.defineProperty and didn't define a setter.

Is this an issue with Angular or Zone.js?

Note: This error went away after I fixed the issue that was causing the exception to be thrown in the first place, but it still seems like incorrect error handling.

[dancancro]

What did you do to fix the issue? Here's my stack trace with zone 0.6.27 and Angular 2.0.0-rc.6 ...

Uncaught TypeError: Cannot set property stack of [object Object] which has only a getter
onHandleError @ long-stack-trace-zone.js?fcc3:135
ZoneDelegate.handleError @ zone.js?fad3:327
onHandleError @ VM22016:61
ZoneDelegate.handleError @ zone.js?fad3:327
Zone.runGuarded @ zone.js?fad3:233
NgZoneImpl.runInnerGuarded @ VM22016:74
NgZone.runGuarded @ VM21996:239
outsideHandler @ VM22196:30
ZoneDelegate.invokeTask @ zone.js?fad3:356
Zone.runTask @ zone.js?fad3:256
ZoneTask.invoke @ zone.js?fad3:423

[matthewsorenson-tr]

I set a breakpoint on line 135 in long-stack-trace-zone.js, triggered this issue, then went to the console and ran renderLongStackTrace(parentTask.data && parentTask.data[creationTrace], error.stack) to get the stack trace that should have been displayed. You could also just inspect the error object manually. In my case, it was a warning from the dev mode change detection code stating that a value had changed during the change detection process and a new cycle wasn't triggered. This was fixed by moving code in some components from ngAfterViewInit() to ngAfterContentInit().

[tmakin]

I've run into this issue too over the last couple of days following RC 6 upgrade with zone.js 0.6.17. A range of different errors seem to trigger it. For example, a simple undefined variable error inside a component function call. I was able to see the true error using a breakpoint on long-stack-trace-zone.js:135 as suggested above.

[dancancro]

@matthewsorenson-tr Thank you very much. That gave me a familiar error. I was wondering what happened to it. Welcome back, old converting circular structure to json error.

[ocombe]

I've been having this error a lot on various problems, the error message doesn't help at all, it was really hard to debug :(
You command works well @matthewsorenson-tr thanks :)

[ocombe]

@mhevery I really wish we could have the stack trace when this error happens instead of this cryptic message
It's probably a bug in one of the last zone.js versions that prevents the console.error to be shown

[retrospectacus]

You can work around this by changing line 135 in node_modules/zone.js/dist/long-stack-trace-zone.js
to Object.defineProperty(error, 'stack', renderLongStackTrace(parentTask.data && parentTask.data[creationTrace], error.stack));
You will get a different error from Zone "Cannot create property 'configurable' on string" but the more useful error originally produced by your code will be visible in your console.

[smyth64]

@matthewsorenson-tr yeah man, you made my day :D thanks

[timblakely]

I believe this was fixed in #425

[ocombe]

nice ! now we just have to wait for a new release :)

[SaturnTeam]

Please fix bug. I don't what is wrong with my app due to this bug

[matthewsorenson-tr]

Looks like #425 was included in 0.6.21, so I think this issue can be closed.

[tobiaseisenschenk]

I Still get this EXCEPTION: Cannot set property stack of [object Object] which has only a getter
I am on "zone.js": "^0.7.2"
above solution doesn't really do it for me, therefore it is hard to debug.

[JiaLiPassion]

@tobiaseisenschenk, could you provide a reproduce repo or plunker or a full error stack trace, thank you.