java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.AbstractStringBuilder.setLength(AbstractStringBuilder.java:143)
        at java.lang.StringBuilder.setLength(StringBuilder.java:55)
        at org.netbeans.modules.javascript.editing.JsCommentFormatter.<init>(JsCommentFormatter.java:108)
        at org.netbeans.modules.javascript.editing.JsCodeCompletion.document(JsCodeCompletion.java:1980)
        at org.netbeans.modules.gsfret.editor.hyperlink.GoToSupport$1.run(GoToSupport.java:159)
        at org.netbeans.modules.gsfret.editor.hyperlink.GoToSupport$1.run(GoToSupport.java:129)
        at org.netbeans.napi.gsfret.source.Source.runUserActionTask(Source.java:485)
        at org.netbeans.modules.gsfret.editor.hyperlink.GoToSupport.perform(GoToSupport.java:125)
        at org.netbeans.modules.gsfret.editor.hyperlink.GoToSupport.getGoToElementTooltip(GoToSupport.java:92)
        at org.netbeans.modules.gsfret.editor.hyperlink.GsfHyperlinkProvider.getTooltipText(GsfHyperlinkProvider.java:82)
        at org.netbeans.lib.editor.hyperlink.HyperlinkOperation$TooltipResolver.getValue(HyperlinkOperation.java:433)
        at org.netbeans.lib.editor.hyperlink.HyperlinkOperation$TooltipResolver.getValue(HyperlinkOperation.java:420)
        at org.netbeans.modules.editor.NbToolTip$Request.run(NbToolTip.java:394)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)