Merge pull request #6707 from tschaub/errors-url

Set version when building ol package

src/ol/assertionerror.js

@@ -13,11 +13,12 @@ goog.require('ol');
  */
 ol.AssertionError = function(code) {
 
+  var path = ol.VERSION ? ol.VERSION.split('-')[0] : 'latest';
+
   /**
    * @type {string}
    */
-  this.message = 'Assertion failed. See ' +
-      (ol.VERSION ? 'https://openlayers.org/en/' + ol.VERSION.split('-')[0] : '') +
+  this.message = 'Assertion failed. See https://openlayers.org/en/' + path +
       '/doc/errors/#' + code + ' for details.';
 
   /**

src/ol/collection.js

@@ -6,6 +6,7 @@
 goog.provide('ol.Collection');
 
 goog.require('ol');
+goog.require('ol.AssertionError');
 goog.require('ol.CollectionEventType');
 goog.require('ol.Object');
 goog.require('ol.events.Event');
@@ -256,7 +257,7 @@ ol.Collection.prototype.updateLength_ = function() {
 ol.Collection.prototype.assertUnique_ = function(elem, opt_except) {
   for (var i = 0, ii = this.array_.length; i < ii; ++i) {
     if (this.array_[i] === elem && i !== opt_except) {
-      throw new Error('Duplicate item added to a unique collection');
+      throw new ol.AssertionError(58);
     }
   }
 };