The release 4.1.3 is broken. I have seen that you fixed it in the latest commit in master. Please consider publishing this as a new version 4.1.4 at least here on github. A workaround for me at the moment is installing in npm via github url and the exact commit hash to it. If you stopped maintaining this project, at least let's find a way, that we can publish new packages as a community who rely on this on npm directly.

Thanks for putting this together, helps a lot getting away from redux-persist, which is also no longer maintained.