Remove goog.isDef from snapinteraction

src/ol/interaction/snapinteraction.js

@@ -6,6 +6,7 @@ goog.require('goog.asserts');
 goog.require('goog.events');
 goog.require('goog.events.EventType');
 goog.require('goog.object');
+goog.require('ol');
 goog.require('ol.Collection');
 goog.require('ol.CollectionEvent');
 goog.require('ol.CollectionEventType');
@@ -54,19 +55,19 @@ ol.interaction.Snap = function(opt_options) {
     handleUpEvent: ol.interaction.Snap.handleUpEvent_
   });
 
-  var options = goog.isDef(opt_options) ? opt_options : {};
+  var options = opt_options ? opt_options : {};
 
   /**
    * @type {ol.source.Vector}
    * @private
    */
-  this.source_ = goog.isDef(options.source) ? options.source : null;
+  this.source_ = options.source ? options.source : null;
 
   /**
    * @type {ol.Collection.<ol.Feature>}
    * @private
    */
-  this.features_ = goog.isDef(options.features) ? options.features : null;
+  this.features_ = options.features ? options.features : null;
 
   /**
    * @type {Array.<goog.events.Key>}
@@ -114,8 +115,8 @@ ol.interaction.Snap = function(opt_options) {
    * @type {number}
    * @private
    */
-  this.pixelTolerance_ = goog.isDef(options.pixelTolerance) ?
+  this.pixelTolerance_ = ol.isDef(options.pixelTolerance) ?
-      options.pixelTolerance : 10;
+      /** @type {number} */ (options.pixelTolerance) : 10;
 
   /**
    * @type {function(ol.interaction.Snap.SegmentDataType, ol.interaction.Snap.SegmentDataType): number}
@@ -159,10 +160,11 @@ goog.inherits(ol.interaction.Snap, ol.interaction.Pointer);
  * @api
  */
 ol.interaction.Snap.prototype.addFeature = function(feature, opt_listen) {
-  var listen = goog.isDef(opt_listen) ? opt_listen : true;
+  var listen = ol.isDef(opt_listen) ?
+      /** @type {boolean} */ (opt_listen) : true;
   var geometry = feature.getGeometry();
   var segmentWriter = this.SEGMENT_WRITERS_[geometry.getType()];
-  if (goog.isDef(segmentWriter)) {
+  if (segmentWriter) {
     var feature_uid = goog.getUid(feature);
     this.indexedFeaturesExtents_[feature_uid] = geometry.getExtent(
         ol.extent.createEmpty());
@@ -210,7 +212,7 @@ ol.interaction.Snap.prototype.getFeatures_ = function() {
   } else if (!goog.isNull(this.source_)) {
     features = this.source_.getFeatures();
   }
-  goog.asserts.assert(goog.isDef(features), 'features should be defined');
+  goog.asserts.assert(features !== undefined, 'features should be defined');
   return features;
 };
 
@@ -286,7 +288,8 @@ ol.interaction.Snap.prototype.handleGeometryModify_ = function(feature, evt) {
  * @api
  */
 ol.interaction.Snap.prototype.removeFeature = function(feature, opt_unlisten) {
-  var unlisten = goog.isDef(opt_unlisten) ? opt_unlisten : true;
+  var unlisten = ol.isDef(opt_unlisten) ?
+      /** @type {boolean} */ (opt_unlisten) : true;
   var feature_uid = goog.getUid(feature);
   var extent = this.indexedFeaturesExtents_[feature_uid];
   if (extent) {