Chart.of does not recognize valid charts

[Chriscbr]

I'd be keen to work on this as we are looking to distribute a few pre-baked charts.
At the moment, when I install our package locally into a test project I get failures due to a parent chart not being found.

For some reason, Chart.of(...) fails for

import { BasicApplication } from "shared/charts" // this is locally npm-installed

class X extends Chart {
   constructor(scope: Construct, id: string) {
     super(scope, id)
    
     new BasicApplication(this, `${id}-basic`, {
        // ... props elided....
     })
  }
}

Having spent some time in the debugger, the if (c instanceof Chart) in Chart.of(thing) fails for X, even though it extends Chart.

If I inline my entire code into e.g. vendered and change the import, all is happy...

Should I open a seprate bug for 🔼 or is that something better docs might address?

Originally posted by @felipesere in cdk8s-team/cdk8s#794 (comment)