We haven't been able to find a synchronous variant of the file-system operations we're currently relying on for the synchronous methods (clearTestState, exists and deleteFile) relying on these.

We either have to implement a synchronous variant of the file-system operations we need, either in our own native library or upstream a PR to "react-native-fs" (or similar package).

We also have the option to break our API and make the before-mentioned methods async (returning promises).