RxDB
Client side, offline-first, reactive database for JavaScript apps
...To replicate data between your clients and server, RxDB provides modules for real-time replication with any CouchDB compliant endpoint and also with custom GraphQL endpoints. Multiplatform support for browsers, nodejs, electron, Cordova, react-native and every other javascript runtime. Replication between client and server-data, compatible with pouchdbPouchDB, couchdbCouchDB, and cloudantIBM Cloudant. There is also a plugin for a GraphQL replication.