Generate index.d.ts automatically from source

[spatialillusions]

If anyone has any ideas of how the simplest way, that doesn't require a lot of overhead, to manage the type definitions in the source code, so that the index.d.ts can be updated when the library is built, it would be great. I have seen some things about JSdoc, but it should be a simpler way to just generate the index.d.ts that doesn't require the full JSdoc.