3 packages
geojson-polygon-self-intersections
A very simple script to compute all self-intersections in a GeoJSON polygon.
greatcircleintersect
A very simple script to compute the intersection point of two great circles specified using two points. The intersection point is computed either in the Cartesian plane of its coordinates or on a Sphere.
simplepolygon
Takes a complex (i.e. self-intersecting) GeoJSON polygon, and breaks it down into its composite simple, non-self-intersecting one-ring polygons.