Migration from VS2017 Cordova to Ionic Studio

We have a non-angular app that was build using VS2017/Cordova and are looking for a place to move to. Can anyone tell me if Ionic Studio can be used with a “plain” Html5/Typescript app? Our longer term plan will be to migrate to Ionic and Angular, but we are realistically a year away from being able to do that.

Thanks,
John