What is BaseControl in version 7?

[NickCarducci]

Class extends value undefined is not a constructor or null

class Marker extends BaseControl {
  _render() {
  }
}

I believe this marker-feature is important for the supercluster.

[Pessimistress]

There are no class components in v7. Use https://visgl.github.io/react-map-gl/docs/api-reference/use-control