Ionic 2 , currently in beta, uses Angular2 to create hybrid mobile apps. You will need to make some changes to your application, but it is still Angular2, only with some custom ionic components.
NativeScript also uses Angular2 to create applications, but this time it makes real native applications. There's a bit more work, you'll have to adapt your templates and styles, but the code is still Angular2 -flavored TypeScript.
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