React Native - How to access promise values from TaskManager in Expo? - react-native

Question

I am testing background location tasks in react native with Expo's taskmanager to test when I enter a geofence. I've got the basics working but I am now trying to access the values within a promise that is returned from one of the tasks so i can display if you've entered or exited the geofence. Can anyone help me figure out how to properly access the values I want?
Below is the task portion relevant to the geofence. I return the value region which comes as a promise. I haven't been able to figure out how to send directly from task manager yet:
// 3 Define geofencing task
TaskManager.defineTask(TASK_CHECK_GEOFENCE, ({ data: { eventType, region }, error }) => {
if (error) {
// check `error.message` for more details.
return;
}
if (eventType === Location.GeofencingEventType.Enter) {
console.log("You've entered region:", region);
//this.props.setEnterRegion({ inRegion: region })
const final = region
return final
} else if (eventType === Location.GeofencingEventType.Exit) {
console.log("You've left region:", region);
const final = region
return final
}
});
Then within App.js I call the app in componentDidMount:
componentDidMount() {
this.getLocationsPermissions();
this.startBackgroundUpdate();
this.startGeofence();
}
//define and start geofence
startGeofence = async () => {
console.log('starting geofencing test ...')
let x = Location.startGeofencingAsync('TASK_CHECK_GEOFENCE',
[
{
identifier: 'court',
latitude: this.state.myLocation.latitude,
longitude: this.state.myLocation.longitude,
radius: 20,
notifyOnEnter: true,
notifyOnExit: true,
}
]
)
this.sendTask(x)
};
When I try to access the value I can see the promise and I am unsure where I am going wrong. I would perfer to send to the store directly from taskmanager but I am having trouble with that:
//send to store from task
sendTask = (x) => {
console.log('entered region...', x)
this.props.setEnterRegion(x)
entered region... Promise {
"_40": 0,
"_55": null,
"_65": 0,
"_72": null,
}