Added 'default' section and fixed more linting errors

src/ol/render/canvas/Builder.js

@@ -405,6 +405,8 @@ class CanvasBuilder extends VectorContext {
           hitDetectionRenderer || renderer,
         ]);
         break;
+      default:
+        console.warn(`${type} geometry is not supported by custom drawing.`);
     }
     this.endGeometry(feature);
   }