Fix silent error in treenode

thomasnordquist · thomasnordquist · commit 3bfc59d89aca · 2019-05-04T13:03:36.000+02:00
diff --git a/app/src/components/Tree/TreeNode.tsx b/app/src/components/Tree/TreeNode.tsx
@@ -98,7 +98,7 @@ class TreeNodeComponent extends React.Component<Props, State> {
   }
 
   private viewStateHasChanged = (msg: void) => {
-    this.setState({ selected: this.props.treeNode.viewModel!.isSelected() })
+    this.props.treeNode.viewModel && this.setState({ selected: this.props.treeNode.viewModel.isSelected() })
   }
 
   private removeSubscriber(treeNode: q.TreeNode<TopicViewModel>) {

Original file line number	Diff line number	Diff line change
`@@ -98,7 +98,7 @@ class TreeNodeComponent extends React.Component<Props, State> {`
`98`	`98`	`}`
`99`	`99`
`100`	`100`	`private viewStateHasChanged = (msg: void) => {`
`101`		`- this.setState({ selected: this.props.treeNode.viewModel!.isSelected() })`
	`101`	`+ this.props.treeNode.viewModel && this.setState({ selected: this.props.treeNode.viewModel.isSelected() })`
`102`	`102`	`}`
`103`	`103`
`104`	`104`	`private removeSubscriber(treeNode: q.TreeNode<TopicViewModel>) {`