Hi Sean,
Greetings from Syncfusion support
We have validated your query “ToastUtility not resolving”
Sorry for the inconvenience caused, the ToastUtility function for the Toast Component will be included with our Vol 3 2021 release. You can use the ToastUtility property without any issues, after upgrading to the vol 3 release version and the Vol 3 release is scheduled at the end of September 2021.
We appreciate your patience until then.
Regards,
Vinitha.