import { PostgreSQL } from "./types";
export interface Patch {
    time_utc: Date;
    patch_length?: number;
    patch?: string;
    user?: string;
    account_id?: string;
    format?: number;
    snapshot?: string;
}
export declare function syncdoc_history(db: PostgreSQL, string_id: string, include_patches?: boolean): Promise<Patch[]>;