#Service Migration

Apps that use react-native-geolocation-service should migrate directly to the Modern API:

import {
  getCurrentPosition,
  requestLocationSettings,
  setConfiguration,
  unwatch,
  watchPosition
} from 'react-native-nitro-geolocation';

Do not migrate through react-native-nitro-geolocation/compat. The service package exposes Android fused-provider and settings-dialog behavior that maps more closely to Nitro Geolocation's Modern Android provider/settings API.

#Agent Skill

This repository ships an Agent Skills-compatible migration playbook for this path:

npx skills add jingjing2222/react-native-nitro-geolocation --skill service-migration

The skill source is skills/service-migration.

The bundled helper script can inventory and safely transform the first pass:

node <skill-dir>/scripts/migrate-geolocation-service.mjs --root <app-root> --inventory-only
node <skill-dir>/scripts/migrate-geolocation-service.mjs --root <app-root> --dry-run

If the app startup file is obvious, the script can also add the Modern startup configuration:

node <skill-dir>/scripts/migrate-geolocation-service.mjs \
  --root <app-root> \
  --startup-file <app-root>/src/App.tsx

#Startup Configuration

Configure Nitro Geolocation once near app startup.

Normal react-native-geolocation-service migrations should explicitly use Google Play Services fused location on Android:

setConfiguration({
  authorizationLevel: 'whenInUse',
  enableBackgroundLocationUpdates: false,
  locationProvider: 'playServices'
});

Use locationProvider: 'android' only when the legacy app intentionally used forceLocationManager: true or the product requires Android LocationManager.

#API Mapping

forceRequestLocation has no direct Modern option. Preserve that fallback behavior manually only after reviewing the intended UX.

#One-Shot Location

Prefer a Promise chain for mechanical migrations so the containing function does not need to become async immediately.

- import Geolocation from 'react-native-geolocation-service';
+ import {
+   getCurrentPosition,
+   requestLocationSettings
+ } from 'react-native-nitro-geolocation';

  export function loadLocation(onSuccess, onError) {
-   Geolocation.getCurrentPosition(onSuccess, onError, {
-     enableHighAccuracy: true,
-     timeout: 15000,
-     maximumAge: 10000,
-     showLocationDialog: true
-   });
+   requestLocationSettings({
+     accuracy: { android: 'high', ios: 'best' }
+   })
+     .then(() =>
+       getCurrentPosition({
+         accuracy: { android: 'high', ios: 'best' },
+         timeout: 15000,
+         maximumAge: 10000
+       })
+     )
+     .then(onSuccess)
+     .catch(onError);
  }

Do not add requestLocationSettings() when the legacy call explicitly used showLocationDialog: false.

When showLocationDialog was omitted, review the flow manually. The service package default was true; Nitro Modern API requires an explicit settings flow.

#Watches

Use the low-level Modern watch API as the first safe target:

- const watchId = Geolocation.watchPosition(onPosition, onError, {
-   enableHighAccuracy: true,
-   distanceFilter: 10,
-   interval: 5000,
-   fastestInterval: 2000
- });
+ const watchToken = watchPosition(onPosition, onError, {
+   accuracy: { android: 'high', ios: 'best' },
+   distanceFilter: 10,
+   interval: 5000,
+   fastestInterval: 2000
+ });

- Geolocation.clearWatch(watchId);
+ unwatch(watchToken);

Upgrade to useWatchPosition() only when the watch is owned by a React function component or custom hook and the existing callbacks do not contain ordering-sensitive side effects such as analytics, navigation, mutation, or debouncing.

#Permission Differences

Legacy requestAuthorization() can return disabled. Modern requestPermission() returns permission status only:

const status = await requestPermission();

If the old code handled disabled, check device-level service state separately:

const servicesEnabled = await hasServicesEnabled();

if (!servicesEnabled) {
  showLocationServicesDisabledMessage();
  return;
}

const status = await requestPermission();

#Default Differences

Review call sites that omit options:

For fresh user-facing location, choose explicit options such as:

await getCurrentPosition({
  accuracy: { android: 'high', ios: 'best' },
  maximumAge: 0,
  timeout: 15000
});

For cached UI, read cached state explicitly with getLastKnownPosition() and then refresh if the product flow needs it.