Unable to get property 'ADDITION' of undefined or null reference

[poloka]

Please fill out the below template as best you can.

Description of Issue

Receiving the following error when embedded within an iframe

Unable to get property 'ADDITION' of undefined or null reference

System Configuration

Project Version

xfc-1.0.1

Additional Details (optional)

IE 11.0.32 build 11.0.9600.18349CO (KB3160005)
Also logged issue against the mutation-observer for additional assistance.
The line of code that is throwing the error was here.

Steps to Reproduce the Issue

Unable to create in sample application with local, only reproducible on a citrix machine.

Expected Outcomes

Content loads without javascript errors.

[mhemesath]

XFC never attempts to get a property called ADDITION; the property name doesn't even exist in the repo. What is leading you to believe this is an XFC issue?

[poloka]

The error received is referenced within the dependency noted in xfc's package.json. Not directly an issue with XFC but rather in the dependency being utilized; hence why I've also logged an issue with the mutation-observer in attempting to identify where the problem is originating from.

[poloka]

Created a PR for the mutation-observer in case the MutationEvent has been deprecated in its usage. Looks like the mutation-observer project hasn't been updated in over 2 years so concerned that this change will not be accepted. Are they any other possibilities for polyfills for usage other than this project?

[kafkahw]

Fixed in PR #4