What is the type GeoGeometryObjects and how to properly use it?

[fnick851]

In TypeScript, with this:

  const sphere = { type: 'Sphere' }
  const projection = projectionFunction().fitWidth(width, sphere)
  const pathGenerator = geoPath(projection)
  const bounds = pathGenerator.bounds(sphere)

I get an error for the line pathGenerator.bounds(sphere):

const sphere: {
    type: string;
}
Argument of type '{ type: string; }' is not assignable to parameter of type 'GeoPermissibleObjects'.
  Property 'geometries' is missing in type '{ type: string; }' but required in type 'ExtendedGeometryCollection<GeoGeometryObjects>'.ts(2345)
index.d.ts(48, 5): 'geometries' is declared here.

I can satisfy the type by doing:

  const sphere = { type: 'Sphere', geometries: {} as GeoGeometryObjects[] }

But what is the proper way to create the sphere object?
What is GeoGeometryObjects and how do I get/create it?

Thanks.

[Fil]

The typings are wrong if they forget that specific case of {type: "Sphere"} which doesn't have a geometries prop.

[fnick851]

Thank you!