missing cluster in interface

[huineng]

https://github.com/nats-io/nats.js/blob/b4aa05892adef39f1247a6d1cd4b779580291f68/index.d.ts#L105

the interface is missing the value
cluster?: string

i can see that value when i do console.info(ServerInfo)

{
  server_id: 'NATX4TWMDO3P4GX3FIVVP45KRFZH3VHHDQBK2JDXGUX',
  server_name: 'NAP4ACXP7KYTHBRI75KRFZH3VHHDQBK2JDXGUX',
  version: '2.2.0',
  proto: 1,
  git_commit: '0e3c723',
  go: 'go1.16.2',
  host: '0.0.0.0',
  port: 4222,
  headers: true,
  auth_required: true,
  max_payload: 1048576,
  client_id: 158,
  client_ip: '10.15.7.0',
  cluster: 'nats-cluster'
}

thanks