index.js

import { registerRootComponent } from "expo";
import codePush from "react-native-code-push";
import App from "./App";
import { CODE_PUSH_DEPLOYMENT_KEY } from "@env";
import { AppI18n } from "./localize";

const codePushOptions = {
  updateDialog: {
    optionalUpdateMessage: AppI18n.t("update.optionalUpdateMessage"),
    optionalInstallButtonLabel: AppI18n.t("update.optionalInstallButtonLabel"),
    optionalIgnoreButtonLabel: AppI18n.t("update.optionalIgnoreButtonLabel"),
    title: AppI18n.t("update.title"),
    mandatoryUpdateMessage: AppI18n.t("update.mandatoryUpdateMessage"),
    mandatoryContinueButtonLabel: AppI18n.t("update.mandatoryContinueButtonLabel"),
  },
  deploymentKey: CODE_PUSH_DEPLOYMENT_KEY,
};
// registerRootComponent calls AppRegistry.registerComponent('main', () => App);
// It also ensures that whether you load the app in Expo Go or in a native build,
// the environment is set up appropriately
registerRootComponent(codePush(codePushOptions)(App));