Design System Development for Mobile Browser

The app has already had more than 30 millions users and has been seen on TechCrunch, Wired and so on before redesign, but in 2019 the moment came to update it. With redesign worked Product Designer and my task was to prepare style guides for developers.
For the sake of consistency of the whole app, I united visual style elements, components of the app and interaction patterns into a holistic document (UI library and style guide). In other words - developed design system, based on new design concept.
Here you can see the result.