0.8.17 seems broken on IE

[marcovdb]

Using Zone.js 0.8.17, my application fails in IE11 with the following error message:

SCRIPT5007: Unable to get property 'type' of undefined or null reference
zone.js (196,25)

Reverting to 0.8.16 fixes the issue.

[JiaLiPassion]

@marcovdb ,could you provide a reproduce repo? Or could you help me to debug the error detail? thank you!

[marcovdb]

Sure, happy to help.

I modified zone.js to log the offending task to the console and this is what it's telling me:

I don't know if that is helpful at all?

[JiaLiPassion]

@marcovdb ,could you show me the source location where the error throw? and which object is undefined? thank you.

[marcovdb]

"TypeError: Unable to get property 'type' of undefined or null reference
   at wrapFn (eval code:1071:5)
   at loadreadystatechange (eval code:48:9)
   at oninterval (eval code:77:33)
   at Anonymous function (eval code:15:23144)
   at d (eval code:15:23122)
   at ZoneDelegate.prototype.invokeTask (eval code:424:13)
   at Zone.prototype.runTask (eval code:192:21)
   at ZoneTask.invokeTask (eval code:500:17)
   at invoke (eval code:489:21)
   at timer (eval code:1897:17)"

Seems like at some point, wrapFn gets called with an undefined event.

I tried 0.8.16 again (because I could not find any differences between 0.8.14 and .16 relating to wrapFn) and it works fine. So I was incorrect in stating the issue is in 0.8.16 too, it's just 0.8.17. Sorry about that! Something in a66595a must be causing the issue.

[JiaLiPassion]

@marcovdb , thank you for the information, so about the stacktrace, I still need to know the target and eventName, for example, if we call button.onclick = function() {}, then button is target, and click is eventName, so could you help me to find those information by checking the loadreadystatechange, oninterval and other stack frames?

Could you try the attached zone.js.zip?
zone.js.zip

[marcovdb]

The attached zone.js works fine :) No issues with that one.