Convert AccordionBox to TypeScript, see phetsims/sun#738

phetsims · Feb 13, 2022 · fc5683d · fc5683d
1 parent 7d75309
commit fc5683d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/js/PhetioObject.ts b/js/PhetioObject.ts
@@ -392,7 +392,7 @@ class PhetioObject {
    * @param event - the name of the event
    * @param [options]
    */
-  phetioStartEvent( event: string, options: any ): void {
+  phetioStartEvent( event: string, options?: any ): void {
     if ( PHET_IO_ENABLED && this.isPhetioInstrumented() ) {
 
       // only one or the other can be provided