index.js

import { Platform, NativeModules } from "react-native";

import { lookupVersion } from "./src/utils";
import { versionCompare } from "./src/versions";

const DEFAULT_COUNTRY = "us";

export const checkVersion = async(options = {}) => {
  // Get options object
  const platform = options.platform || Platform.OS;
  const country = options.country || DEFAULT_COUNTRY;
  const bundleId = options.bundleId || (NativeModules.RNDeviceInfo
    ? NativeModules.RNDeviceInfo.bundleId
    : null);
  const currentVersion = options.currentVersion || (NativeModules.RNDeviceInfo
    ? NativeModules.RNDeviceInfo.appVersion
    : "");

  // Check if we have retrieved a bundle ID
  if (!bundleId && !("RNDeviceInfo" in NativeModules)) {
    throw Error(
      "[react-native-check-version] Missing react-native-device-info dependency, " +
      "please manually specify a bundleId in the options object."
    );
  }

  try {
    const data = await lookupVersion(platform, bundleId, country);
    const version = versionCompare(currentVersion, data.version);
    return { platform, bundleId, ...data, ...version };
  } catch (e) {
    // On error - return default object
    return {
      platform,
      bundleId,
      version: null,
      needsUpdate: false,
      notes: "",
      url: null,
      lastChecked: (new Date()).toISOString(),
      country,
      error: e
    };
  }
};