java.lang.AssertionError
        at org.netbeans.modules.csl.core.GsfHtmlFormatter.parameters(GsfHtmlFormatter.java:123)
        at org.netbeans.modules.javascript.editing.JsAnalyzer$JsStructureItem.getHtml(JsAnalyzer.java:982)
        at org.netbeans.modules.csl.navigation.ElementNode.getHtmlDisplayName(ElementNode.java:134)
        at org.openide.explorer.view.VisualizerNode.getHtmlDisplayName(VisualizerNode.java:566)
        at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:125)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2717)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
        at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:535)
        at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:181)
        at javax.swing.tree.AbstractLayoutCache.getPreferredWidth(AbstractLayoutCache.java:215)
        at javax.swing.plaf.basic.BasicTreeUI.updateCachedPreferredSize(BasicTreeUI.java:1825)
        at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:1926)
        at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:1914)
        at javax.swing.JComponent.getPreferredSize(JComponent.java:1632)
        at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:769)
        at org.openide.explorer.view.TreeView$ExplorerScrollPaneLayout.layoutContainer(TreeView.java:1698)
        at java.awt.Container.layout(Container.java:1398)
        at java.awt.Container.doLayout(Container.java:1387)
        at java.awt.Container.validateTree(Container.java:1485)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validate(Container.java:1457)
        at org.netbeans.core.windows.view.ui.DesktopImpl$LayeredLayout.layoutContainer(DesktopImpl.java:466)
        at java.awt.Container.layout(Container.java:1398)
        at java.awt.Container.doLayout(Container.java:1387)
        at java.awt.Container.validateTree(Container.java:1485)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validateTree(Container.java:1491)
        at java.awt.Container.validate(Container.java:1457)
        at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:670)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:127)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)