+Dygraph.prototype.layout_;
+
+/** @type {function(): string} */
+Dygraph.prototype.getHighlightSeries;
+
+/** @type {Array.<{elem:Element,type:string,fn:function(!Event):(boolean|undefined|null)}>} */
+Dygraph.prototype.registeredEvents_;
+
+/** @type {{axes: Object}} */
+Dygraph.DEFAULT_ATTRS;