text: 
  /**
   * @fileoverview Externs for TopoJSON.
   * @see https://github.com/mbostock/topojson/wiki/Specification
   * @externs
   */
  
  
  
  /**
   * @constructor
   */
  var TopoJSONTopology = function() {};
  
  
  /**
   * @type {string}
   */
  TopoJSONTopology.prototype.type;
  
  
  /**
   * @type {TopoJSONTransform|undefined}
   */
  TopoJSONTopology.prototype.transform;
  
  
  /**
   * @type {Object.<string, (TopoJSONGeometry|TopoJSONGeometryCollection)>}
   */
  TopoJSONTopology.prototype.objects;
  
  
  /**
   * @type {!Array.<Array.<Array.<number>>>}
   */
  TopoJSONTopology.prototype.arcs;
  
  
  
  /**
   * @constructor
   */
  var TopoJSONTransform = function() {};
  
  
  /**
   * @type {!Array.<number>}
   */
  TopoJSONTransform.prototype.scale;
  
  
  /**
   * @type {!Array.<number>}
   */
  TopoJSONTransform.prototype.translate;
  
  
  
  /**
   * @constructor
   */
  var TopoJSONGeometry = function() {};
  
  
  /**
   * @type {string}
   */
  TopoJSONGeometry.prototype.type;
  
  
  /**
   * @type {string|number|undefined}
   */
  TopoJSONGeometry.prototype.id;
  
  
  
  /**
   * @constructor
   */
  var TopoJSONGeometryCollection = function() {};
  
  
  /**
   * @type {Array.<TopoJSONGeometry>}
   */
  TopoJSONGeometryCollection.prototype.geometries;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONPoint = function() {};
  
  
  /**
   * @type {!Array.<number>}
   */
  TopoJSONPoint.prototype.coordinates;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONLineString = function() {};
  
  
  /**
   * @type {!Array.<number>}
   */
  TopoJSONLineString.prototype.arcs;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONPolygon = function() {};
  
  
  /**
   * @type {!Array.<Array.<number>>}
   */
  TopoJSONPolygon.prototype.arcs;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONMultiPoint = function() {};
  
  
  /**
   * @type {!Array.<Array.<number>>}
   */
  TopoJSONMultiPoint.prototype.coordinates;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONMultiLineString = function() {};
  
  
  /**
   * @type {!Array.<Array.<number>>}
   */
  TopoJSONMultiLineString.prototype.arcs;
  
  
  
  /**
   * @constructor
   * @extends {TopoJSONGeometry}
   */
  var TopoJSONMultiPolygon = function() {};
  
  
  /**
   * @type {!Array.<Array.<Array.<number>>>}
   */
  TopoJSONMultiPolygon.prototype.arcs;
  