Are types for default renderers, cell etc. missing?

[mungojam]

We sometimes extend react datasheet by extending the underlying default behaviour.

But when doing this from typescript, it doesn't seem to be able to find the components to import them. I don't really understand what's going on with it, but I note that they aren't listed in the types folder, only the interfaces are.

Here is an example:

Note that the import works fine if the file is a .jsx so I think it's something to do with types.