These are chat archives for angular/angular-2-ionic-2
depends what you consider easy, does easy mean fast? or does easy mean easy, but slow? Your first question might be - do you need to, e.g can you just use phonegap/cordova to compile it, rather than putting into ionic.
ionic uses angular as a structure - so unless your existing project structure matches, then no you cant just use it.
But yes, if you spend enough time you can migrate your code base, shouldnt be anything to "hard" - but cant imagine will be fast