Use default domain if plot data is empty

app/src/components/Sidebar/PlotHistory.tsx

@@ -88,6 +88,11 @@ export default withTheme((props: Props) => {
 })
 
 function domainForData(data: Array<{ x: number; y: number }>): [number, number] {
+  if (!data[0]) {
+    const defaultDomain: [number, number] = [-1, 1]
+    return defaultDomain
+  }
+
   let max = data[0].y
   let min = data[0].y
   data.forEach(d => {

app/src/components/Tree/TreeNode/index.tsx

@@ -28,11 +28,11 @@ export interface Props {
 
 function TreeNodeComponent(props: Props) {
   const { actions, classes, className, settings, theme, treeNode, lastUpdate, name } = props
-  const deleteTopicCallback = useDeleteKeyCallback(treeNode, actions)
   const [collapsedOverride, setCollapsedOverride] = useState<boolean | undefined>(undefined)
   const [selected, setSelected] = useState(false)
   const nodeRef = useRef<HTMLDivElement>()
   const isAllowedToAutoExpand = useIsAllowedToAutoExpandState(props)
+  const deleteTopicCallback = useDeleteKeyCallback(treeNode, actions)
   useViewModelSubscriptions(treeNode, nodeRef, setSelected, setCollapsedOverride)
   const animationClass =
     props.theme.palette.type === 'light' ? props.classes.animationLight : props.classes.animationDark