[SALESFORCE] PointerEvent is not a constructor error in LWC

[matsbryntse]

Forum post

Hi folks,

We've had an issue raised that our released scheduler component is spewing errors when the page is scrolled. After doing a bit of digging it looks like Locker service doesn't support the PointerEvent created in
onScheduleScroll.

The documentation indicates that PointerEvent is not supported within LWC.
https://developer.salesforce.com/docs/component-library/tools/locker-service-viewer

We've seen this in bryntum gantt version 5.2.1, and want to be able to patch that release due to restrictions on changes in patches in Salesforce. So I would appreciate any support you can offer in working around this.

I've attached a screenshot of the exception we're seeing, can we avoid using PointerEvent in this scenario?

Thanks,
Gareth

[amurashincertinia]

A quick update

This issue is only reproducible if the Scheduler component is displayed on an App page in a Lightning app which uses Console navigation.

We have patched this in our custom bundle build and everything seems to be in order now.

The changes we made:

1. Added a new supportsPointerEventConstructor feature flag to the BrowserHelper.
2. Updated our existing override for onScheduleScrollNow with an early exit if PointerEvent constructor is not supported.
3. Updated EventHelper.fixEvent override with the improved implementation from the latest version.