shadow_dom_components example crashing in Firefox

[Pajn]

After compiling the shadow_dom_components example and running it in Firefox it crashes with this printout in the console:

"[Exception... "Illegal operation on WrappedNative prototype object"  nsresult: "0x8057000c (NS_ERROR_XPC_BAD_OP_ON_WN_PROTO)"  location: "JS frame :: http://127.0.0.1:8080/shadow_dom_components.dart.js :: .lookupAndCacheInterceptor :: line 3298"  data: no]

STACKTRACE:
"

This happens with both Dart stable and dev releases with Angulars master (commit 3ec5d75)

[vicb]

Does this still happen on the latest master ?

[Pajn]

Yes

This can be seen in the Travis builds too https://travis-ci.org/angular/angular.dart/jobs/33940103#L1297
however, the tests still passes which is a bit strange.

[vicb]

@vsavkin do you work on this ?

[vsavkin]

@Pajn I believe an old version the web_components package causes the crash. I tried the example app with web_components 0.6.0+1 and it worked fine. Can you try to upgrade the package?

[vsavkin]

@vicb no, I am working on transcluding components.

[vicb]

@vsavkin Thanks for the update. Upgrading wc would be an easy fix, @Pajn could you please try with the latest 5.x and 6.x versions an report the result ?

(edit: We need to test with the latest 5.x to have the largest possible version constraint)

[Pajn]

Both 0.5.0+1 and 0.6.0+1 works, however the version 0.3.3 specified in the lockfile doesn't (which means that just a pub get will crash and pub upgrade needs to be run).
I don't know if this is fixed with just a updated lockfile or if a version constraint also should be specified in the pubspec.yaml file.

[vicb]

There is not question whether the lock file must be updated.

I would also like to have the constraint added the yaml file, @jbdeboer what do you think ?

[rkirov]

Can't reproduce.