OptionalaccessAWS access key ID.
Bucket name.
OptionalclientAn implementation of the S3 backend, bypassing the lazy SDK import.
This is NOT a place to put an @aws-sdk/client-s3 S3Client; see
IS3Backend. Injecting a real SDK client is refused at
connect() with the methods it lacks.
OptionalendpointCustom S3-compatible endpoint (R2, MinIO, B2).
OptionalregionAWS region.
OptionalsecretAWS secret access key.
Options for
S3Provider(and'b2'preset).