Filter a Y update so it only contains operations from clientId.
We use Yjs's diff-against-state-vector machinery: build a state
vector that has every client exceptclientId advanced past the
end of the input update, then diffUpdate returns just clientId's
structs.
Filter a Y update so it only contains operations from
clientId.We use Yjs's diff-against-state-vector machinery: build a state vector that has every client except
clientIdadvanced past the end of the input update, thendiffUpdatereturns justclientId's structs.