OptionalapiRockset API key used to authenticate the client.
OptionalhostRockset API server host, e.g. https://api.usw2a1.rockset.com.
OptionalclientA pre-built @rockset/client instance (or compatible mock). When provided,
connect() uses it directly and skips require('@rockset/client'). This
is how tests inject a mock without the real driver installed.
Connection options for
RocksetStore.