OptionalpathFilesystem path for the LMDB environment. Defaults to './data/lmdb'.
OptionalconfigEscape hatch for any other lmdb open() option (compression, maxDbs,
encoding, ...). Merged into the object passed to open().
OptionalclientA pre-built lmdb database (or a compatible mock). When provided,
connect() uses it directly and skips require('lmdb') entirely — this
is how tests inject a mock without the real driver installed.
Connection options for
LmdbStore.