import type { JsSnapshot } from "./protocol.ts";
export declare class JsStateStorage {
    private readonly root;
    private readonly session;
    private readonly legacySession;
    private readonly maxBytes;
    private observed;
    constructor(agentDir: string, cwd: string, identity: string, maxBytes: number);
    withLock<T>(operation: () => Promise<T>, signal?: AbortSignal): Promise<T>;
    migrateLegacy(): Promise<boolean>;
    read(name?: string, previous?: JsSnapshot): Promise<JsSnapshot | undefined>;
    private readPath;
    private decode;
    write(snapshot: JsSnapshot, name?: string): Promise<void>;
    reset(): Promise<void>;
    list(query?: string): Promise<string[]>;
    private path;
}