Puppy's paw

// App version 1 (current version)

var onError = function (error) {
    console.log("An error occurred. " + error);
};

var onInstallSuccess = function () {
    console.log("Installation succeeded.");
};

var onPackageDownloaded = function (localPackage) {
    // Install regular updates after someone navigates away from the app for more than 2 minutes
    // Install mandatory updates after someone restarts the app
    localPackage.install(onInstallSuccess, onError, { installMode: InstallMode.ON_NEXT_RESUME, minimumBackgroundDuration: 120, mandatoryInstallMode: InstallMode.ON_NEXT_RESTART });
};

var onUpdateCheck = function (remotePackage) {
    if (!remotePackage) {
        console.log("The application is up to date.");
    } else {
        // The hash of each previously reverted package is stored for later use. 
        // This way, we avoid going into an infinite bad update/revert loop.
        if (!remotePackage.failedInstall) {
            console.log("A CodePush update is available. Package hash: " + remotePackage.packageHash);
            remotePackage.download(onPackageDownloaded, onError);
        } else {
            console.log("The available update was attempted before and failed.");
        }
    }
};

window.codePush.checkForUpdate(onUpdateCheck, onError);

//------------------------------------------------

// App version 2 (updated version)

var app = {
    onDeviceReady: function () {
        // Calling this function is required during the first application run after an update.
        // If not called, the application will be reverted to the previous version.
        window.codePush.notifyApplicationReady();
        // ...
    }
}