The primary focus of Comet is on design and prototyping, not on generating apps directly. You'll be able to export production-quality assets for handoff to developers, or view interactive prototypes online / on devices.
That said, Comet will have an extremely powerful plugin architecture, so third-party developers in the community could certainly create plugins to export code for Angular, React, Objective C, etc.
That said, Comet will have an extremely powerful plugin architecture, so third-party developers in the community could certainly create plugins to export code for Angular, React, Objective C, etc.