import { OnApplicationShutdown } from '@nestjs/common';
import { Sequelize } from 'sequelize';
import { NodeConfig } from '../configure/NodeConfig';
import { SubqueryProject } from '../configure/project.model';
import { ProofOfIndex } from './entities/Poi.entity';
export declare class MmrService implements OnApplicationShutdown {
    protected nodeConfig: NodeConfig;
    protected project: SubqueryProject;
    protected sequelize: Sequelize;
    private isShutdown;
    private blockOffset;
    private metadataRepo;
    private fileBasedMmr;
    private poiRepo;
    private nextMmrHeight;
    constructor(nodeConfig: NodeConfig, project: SubqueryProject, sequelize: Sequelize);
    onApplicationShutdown(): void;
    init(schema: string): Promise<void>;
    fetchBlockOffsetFromDb(): Promise<number | null>;
    appendMmrNode(poiBlock: ProofOfIndex): Promise<void>;
    updatePoiMmrRoot(id: number, mmrValue: Uint8Array): Promise<void>;
    syncFileBaseFromPoi(): Promise<void>;
    getPoiBlocksByRange(startHeight: number): Promise<ProofOfIndex[]>;
    ensureFileBasedMmr(projectMmrPath: string): void;
}