If you are using AngularFire in your project and you are getting the error:
Cannot read property ‘indexOf’ of undefined
you may have run into the same problem I did. I previously had Firebase installed in my project as well as AngularFire. The new version of AngularFire (AF2) already has the Firebase module pre-installed. So to get your project compiling you will have to remove the standalone install of Firebase. See more here.
I’m a mobile applications developer based in the UK, concentrating primarily on hybrid application development with Ionic and Ionic 2 but also with native development skills. Please visit www.crossplatformsolutions.co.uk for more information about me and how I may be able to help you with mobile application development, particularly with Ionic 2 but also with other mobile frameworks and technologies. Thanks for visiting.