Add framework event node level event filtering

Summary: Lets you filter a nodes events by thread or type

Reviewed By: lblasa

Differential Revision: D48346955

fbshipit-source-id: 455d65ad21c54c5ad26782ac6a446f7ae15a4356

desktop/flipper-plugin/src/ui/data-inspector/TimelineDataDescription.tsx

@@ -45,6 +45,9 @@ export class TimelineDataDescription extends Component<Props, State> {
 
   render(): ReactNode {
     const moments = Object.values(this.props.timeline.time);
+    if (moments == null || moments.length === 0) {
+      return null;
+    }
     const firstMoment = moments[0].moment;
     const points = moments.map((value) => ({
       label: value.display,