CANNON.Ray(...).intersectBody doesn't update direction itself

new CANNON.Ray(vFrom, vTo).intersectBody(body) method doesn't work without using ray.updateDirection method (which was private in cannon.js).

body.addEventListener("collide", ({ contact }) => {
  if (!grounded) {
    const vFrom = body.position;
    const vTo = new CANNON.Vec3(0, -1, 0);
    const ray = new CANNON.Ray(vFrom, vTo);
    ray.updateDirection(); // <------ I shouldnt need to update the direction 
                            //         manually before using intersectBody
    ray.intersectBody(contact.bi);
    grounded = ray.result.hasHit;
  }
});

A bug also encountered here but you should dig into the code.

Also, thanks for your port and fork !