code: function factory(type) {
    point.displayName = type
  
    return point
  
    /* Get a point in `node.position` at a bound `type`. */
    function point(node) {
      var point = (node && node.position && node.position[type]) || {}
  
      return {
        line: point.line || null,
        column: point.column || null,
        offset: isNaN(point.offset) ? null : point.offset
      }
    }
  }
docs: /* Factory to get a `type` point in the positional info of a node.