About the node.js sdk bucket.put

hello:
I use couchbase server 5.0 and sync_gateway1.5, web use angular. I have a question. that can node.js sdk has function like PATCH? this very smart for update fields.
thank you!

This API called subdoc. You can get example of it in this blog
https://blog.couchbase.com/using-the-couchbase-sub-document-api-with-the-nodejs-sdk/
Or in the docs https://developer.couchbase.com/documentation/server/5.0/sdk/subdocument-operations.html

thank you for reply.