Hey this is really cool! Not sure how this compares to https://github.com/benjamine/jsondiffpatch which has been unmaintained for some time. But if this could replace it I'd happy to start using it.
Thanks for your interest! Currently, Microdiff does not have a patching functionality by default, and the API is different. If there is enough interest, though, I might make a compatibility layer to ease the differences, and it probably would not be hard to do yourself too.