fix(overmind-react): createHook effect, check if overmindState has a value

Author: garth

packages/node_modules/overmind-react/src/index.ts

@@ -88,12 +88,14 @@ export const createHook = <A extends Overmind<Configuration>>(overmind: A) => {
     useEffect(
       () => {
         return () => {
-          overmind.eventHub.emitAsync(EventType.COMPONENT_REMOVE, {
-            componentId: component.__componentId,
-            componentInstanceId: overmindState.componentInstanceId,
-            name,
-          })
-          overmindState.listener.dispose()
+          if (overmindState) {
+            overmind.eventHub.emitAsync(EventType.COMPONENT_REMOVE, {
+              componentId: component.__componentId,
+              componentInstanceId: overmindState.componentInstanceId,
+              name,
+            })
+            overmindState.listener.dispose()
+          }
         }
       },
       [component.__componentId]