diff --git a/simple.json b/simple.json
new file mode 100644
index 0000000000..127f930dc7
--- /dev/null
+++ b/simple.json
@@ -0,0 +1,25 @@
+{
+  "exports": [],
+  "src": ["src/**/*.js", "examples/simple.js"],
+  "compile": {
+    "js": ["externs/olx.js"],
+    "externs": [
+      "externs/example.js",
+      "externs/bingmaps.js",
+      "externs/geojson.js",
+      "externs/oli.js",
+      "externs/proj4js.js",
+      "externs/tilejson.js",
+      "externs/topojson.js",
+      "externs/vbarray.js"
+    ],
+    "define": [
+      "goog.dom.ASSUME_STANDARDS_MODE=true",
+      "goog.DEBUG=false"
+    ],
+    "compilation_level": "ADVANCED_OPTIMIZATIONS",
+    "output_wrapper": "(function(){%output%})();",
+    "use_types_for_optimization": true,
+    "manage_closure_dependencies": true
+  }
+}
diff --git a/src/ol/geom/circle.js b/src/ol/geom/circle.js
index a8762facf1..4b9d3bf2b5 100644
--- a/src/ol/geom/circle.js
+++ b/src/ol/geom/circle.js
@@ -13,7 +13,7 @@ goog.require('ol.geom.flat.deflate');
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawPoint} center Center.
  * @param {number=} opt_radius Radius.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.Circle = function(center, opt_radius, opt_layout) {
diff --git a/src/ol/geom/linearring.js b/src/ol/geom/linearring.js
index c2cd1b8dfa..a1f4d3e2d9 100644
--- a/src/ol/geom/linearring.js
+++ b/src/ol/geom/linearring.js
@@ -15,7 +15,7 @@ goog.require('ol.geom.flat.simplify');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawLinearRing} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.LinearRing = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/linestring.js b/src/ol/geom/linestring.js
index 0dcd57df7d..7c96561570 100644
--- a/src/ol/geom/linestring.js
+++ b/src/ol/geom/linestring.js
@@ -19,7 +19,7 @@ goog.require('ol.geom.flat.simplify');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawLineString} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.LineString = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/multilinestring.js b/src/ol/geom/multilinestring.js
index 842d41d1a1..c690928fe4 100644
--- a/src/ol/geom/multilinestring.js
+++ b/src/ol/geom/multilinestring.js
@@ -19,7 +19,7 @@ goog.require('ol.geom.flat.simplify');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawMultiLineString} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.MultiLineString = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/multipoint.js b/src/ol/geom/multipoint.js
index badab06dd9..7a86809f56 100644
--- a/src/ol/geom/multipoint.js
+++ b/src/ol/geom/multipoint.js
@@ -17,7 +17,7 @@ goog.require('ol.math');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawMultiPoint} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.MultiPoint = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/multipolygon.js b/src/ol/geom/multipolygon.js
index 4379765c03..c2cabee478 100644
--- a/src/ol/geom/multipolygon.js
+++ b/src/ol/geom/multipolygon.js
@@ -24,7 +24,7 @@ goog.require('ol.geom.flat.simplify');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawMultiPolygon} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.MultiPolygon = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/point.js b/src/ol/geom/point.js
index 90c2d40f84..07347dbb6f 100644
--- a/src/ol/geom/point.js
+++ b/src/ol/geom/point.js
@@ -13,7 +13,7 @@ goog.require('ol.math');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawPoint} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.Point = function(coordinates, opt_layout) {
diff --git a/src/ol/geom/polygon.js b/src/ol/geom/polygon.js
index b7a484410a..be40bcc277 100644
--- a/src/ol/geom/polygon.js
+++ b/src/ol/geom/polygon.js
@@ -23,7 +23,7 @@ goog.require('ol.geom.flat.simplify');
  * @constructor
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawPolygon} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout|string=} opt_layout Layout.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
  * @todo api
  */
 ol.geom.Polygon = function(coordinates, opt_layout) {