Zeplin generates React Native code snippets on iOS and Android projects—from layers, colors and text styles!
You can enable it for each project separately from the Styleguide:
React Native code snippets are only available in iOS and Android projects right now.
If you have a Web project, sadly it's not possible to change the project type, since Zeplin generates all the resources while exporting them from Sketch/Photohop. We'd highly recommend creating a new project and exporting your artboards again.
We'll keep improving Zeplin's React support, so please let us know if you have any suggestions! 💪