declare module "polygon-clipping" {
  export type Pair = [number, number]
  export type Ring = Pair[]
  export type Polygon = Ring[]
  export type MultiPolygon = Polygon[]
  type Geom = Polygon | MultiPolygon
  export function intersection(geom: Geom, ...geoms: Geom[]): MultiPolygon
  export function xor(geom: Geom, ...geoms: Geom[]): MultiPolygon
  export function union(geom: Geom, ...geoms: Geom[]): MultiPolygon
  export function difference(
    subjectGeom: Geom,
    ...clipGeoms: Geom[]
  ): MultiPolygon
}