Add missing WMSGetFeatureInfo exports

src/ol/source/imagewmssource.js

@@ -45,7 +45,8 @@ ol.source.ImageWMS = function(options) {
    * @type {ol.source.WMSGetFeatureInfoOptions}
    */
   this.getFeatureInfoOptions_ = goog.isDef(options.getFeatureInfoOptions) ?
-      options.getFeatureInfoOptions : {};
+      options.getFeatureInfoOptions :
+      /** @type {ol.source.WMSGetFeatureInfoOptions} */ ({});
 
   /**
    * @private

src/ol/source/tilewmssource.js

@@ -110,7 +110,8 @@ ol.source.TileWMS = function(options) {
    * @type {ol.source.WMSGetFeatureInfoOptions}
    */
   this.getFeatureInfoOptions_ = goog.isDef(options.getFeatureInfoOptions) ?
-      options.getFeatureInfoOptions : {};
+      options.getFeatureInfoOptions :
+      /** @type {ol.source.WMSGetFeatureInfoOptions} */ ({});
 
 };
 goog.inherits(ol.source.TileWMS, ol.source.TileImage);

src/ol/source/wmssource.exports

@@ -1 +1,3 @@
 @exportSymbol ol.source.WMSGetFeatureInfoMethod
+@exportProperty ol.source.WMSGetFeatureInfoMethod.IFRAME
+@exportProperty ol.source.WMSGetFeatureInfoMethod.XHR_GET

src/ol/source/wmssource.js

@@ -6,6 +6,13 @@ goog.require('goog.object');
 goog.require('goog.uri.utils');
 
 
+/**
+ * @typedef {{method: (ol.source.WMSGetFeatureInfoMethod|undefined),
+ *            params: (Object.<string,string>|undefined)}}
+ */
+ol.source.WMSGetFeatureInfoOptions;
+
+
 /**
  * Method to use to get WMS feature info.
  * @enum {string}