import { Phase, Snapshot } from './contract';
import { Options } from './config';
import { Logger, Store } from './store';
export declare class PhaseLog {
    private store;
    private opts;
    private log;
    private closed;
    private machine;
    private chain;
    private filePath;
    private persistedRev;
    constructor(store: Store, opts: Options, log: Logger);
    private enqueue;
    init(now: number): Promise<void>;
    feed(snap: Snapshot): Promise<void>;
    list(limit: number): Phase[];
    current(): Phase | null;
    private absorb;
    private lastClosedEnd;
    private readRows;
    private revision;
    private persistIfChanged;
    private persist;
    flush(): Promise<void>;
}