import { ReactNativeFirebaseAppCheckProvider } from `@react-native-firebase/app-check`;
import { initializeAppCheck  } from `@react-native-firebase/app-check`;

rnfbProvider = new ReactNativeFirebaseAppCheckProvider();
rnfbProvider.configure({
  android: {
    provider: __DEV__ ? 'debug' : 'playIntegrity',
    debugToken: 'some token you have configured for your project firebase web console',
  },
  apple: {
    provider: __DEV__ ? 'debug' : 'appAttestWithDeviceCheckFallback',
    debugToken: 'some token you have configured for your project firebase web console',
  },
  web: {
    provider: 'reCaptchaV3',
    siteKey: 'unknown',
  },
});

const appCheck = initializeAppCheck({ provider: rnfbProvider, isTokenAutoRefreshEnabled

import { getApp } from "@react-native-firebase/app";
import getAppCheck, { getToken, initializeAppCheck } from "@react-native-firebase/app-check";

const app = getApp()
const appCheck = getAppCheck(app)

const provider = appCheck.newReactNativeFirebaseAppCheckProvider();
provider.configure({
  android: {
    provider: "debug",
  },
  apple: {
    provider: "debug",
  },
  isTokenAutoRefreshEnabled: true,
});

await initializeAppCheck(app, {
  provider,
});

const token = await getToken(appCheck, false);
if (token.token.length <= 0) {
  throw new Error("AppCheck token was not initialized");
}