UnsafeBlockSignerAddressSystemConfigStorageSlot is the storage slot identifier of the unsafeBlockSigner `address` storage value in the SystemConfig L1 contract.

DisabledConfigPersistence provides an implementation of config persistence that does not persist anything and reports unset for all values.

L2SyncEndpointConfig contains configuration for the fallback sync endpoint.

PreparedL1Endpoint enables testing with an in-process pre-setup RPC connection to L1.

PreparedL2Endpoints enables testing with in-process pre-setup RPC connections to L2 engines.

RuntimeConfig maintains runtime-configurable options.

Tracer configures the OpNode to share events.