s2-geometry
A pure JavaScript/ES5.1 port of Google/Niantic's S2 Geometry library (used by Ingress, Pokemon GO)
nodes2ts
a Typescript porting of the great S2 Geometry library from Google
s2geometry-node
Bindings for the [S2 Geometry Library](https://code.google.com/p/s2-geometry-library/) into [node.js](http://nodejs.org/).