Describe the issue. What is the expected and unexpected behavior?

I'm working on migrating a donut chart from patternfly-react to @patternfly/react-charts. I've added the latest version of react-charts to my project and migrated the code, however I get a build error in an unrelated component from react-charts:

I had actually done this work initially earlier this month against version 5.2.21 and it compiled fine at that point, however as of yesterday building against either that old version or the latest/prelease fails with this compile error.

The changes made are here and full compile output is here, any pointers would be appreciated!