Disallowed undefined 'minResolution' value

src/ol/layer/layerbase.js

@@ -153,7 +153,7 @@ ol.layer.Base.prototype.getLayerState = function() {
     visible: visible,
     extent: extent,
     maxResolution: maxResolution,
-    minResolution: goog.isDef(minResolution) ? Math.max(minResolution, 0) : 0
+    minResolution: Math.max(minResolution, 0)
   };
 };
 
@@ -205,12 +205,12 @@ goog.exportProperty(
 
 
 /**
- * @return {number|undefined} The minimum resolution of the layer.
+ * @return {number} The minimum resolution of the layer.
  * @observable
  * @api stable
  */
 ol.layer.Base.prototype.getMinResolution = function() {
-  return /** @type {number|undefined} */ (
+  return /** @type {number} */ (
       this.get(ol.layer.LayerProperty.MIN_RESOLUTION));
 };
 goog.exportProperty(
@@ -363,7 +363,7 @@ goog.exportProperty(
 
 
 /**
- * @param {number|undefined} minResolution The minimum resolution of the layer.
+ * @param {number} minResolution The minimum resolution of the layer.
  * @observable
  * @api stable
  */

test/spec/ol/layer/layer.test.js

@@ -50,6 +50,10 @@ describe('ol.layer.Layer', function() {
       expect(layer.getMaxResolution()).to.be(Infinity);
     });
 
+    it('provides default min resolution', function() {
+      expect(layer.getMinResolution()).to.be(0);
+    });
+
     it('provides default layerState', function() {
       expect(layer.getLayerState()).to.eql({
         layer: layer,