NewDriver composes an events handler that tracks L1 state, triggers L2 derivation, and optionally sequences new L2 blocks.

L1State tracks L1 head, safe and finalized blocks.

MeteredEngine wraps an EngineControl and adds metrics such as block building time diff and sealing time.

Sequencer implements the sequencing interface of the driver: it starts and completes block building jobs.

Deprecated: use eth.SyncStatus instead.