@react-native-firebase/messaging/lib/statics.js

React Native Firebase - React Native Firebase provides native integration of Firebase Cloud Messaging (FCM) for both Android & iOS. FCM is a cost free service, allowing for server-device and device-device communication. The React Native Firebase Messaging

// shared between namespaced and modular API

export const AuthorizationStatus = {
  NOT_DETERMINED: -1,
  DENIED: 0,
  AUTHORIZED: 1,
  PROVISIONAL: 2,
  EPHEMERAL: 3,
};
export const NotificationAndroidPriority = {
  PRIORITY_MIN: -2,
  PRIORITY_LOW: -1,
  PRIORITY_DEFAULT: 0,
  PRIORITY_HIGH: 1,
  PRIORITY_MAX: 2,
};
export const NotificationAndroidVisibility = {
  VISIBILITY_SECRET: -1,
  VISIBILITY_PRIVATE: 0,
  VISIBILITY_PUBLIC: 1,
};