import { FastifyLoggerInstance } from "fastify";
import type { Db, MongoClient } from "mongodb";
export declare class MigrationsExecutor {
    private client;
    private db;
    migrationFiles: string[];
    private _log;
    private _rootDir;
    constructor(client: MongoClient, db: Db, migrationFiles: string[], _log: FastifyLoggerInstance, _rootDir: string);
    getAppliedMigrations(): Promise<import("mongodb").WithId<import("bson").Document>[]>;
    findUnappliedMigrations(): Promise<string[]>;
    applyMigrations(): Promise<void>;
}