fix to ensure props are available before testing them

srclosson · Sep 22, 2023 · 35b171c · 35b171c
1 parent 0189f25
commit 35b171c
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "grafana-div-panel",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Create your own panel with html + css and javascript",
   "scripts": {
     "build": "webpack -c ./.config/webpack/webpack.config.ts --env production",

diff --git a/src/divPanelChild.tsx b/src/divPanelChild.tsx
@@ -19,7 +19,8 @@ export class DivPanelChild extends Component<DivPanelChildProps, State> {
 
   shouldComponentUpdate = (prevProps: DivPanelChildProps, prevState: State): boolean => {
     const truth =
-      JSON.stringify(prevProps) !== JSON.stringify(this.props) ||
+      ((typeof prevProps !== "undefined" && typeof this.props !== "undefined) &&
+      (JSON.stringify(prevProps) !== JSON.stringify(this.props))) ||
       prevProps.data.state === 'Done' ||
       prevProps.data.state === 'Streaming';
     return truth;