import type { IContainer } from 'node-cqrs';
import type { Database } from 'better-sqlite3';
/**
 * Abstract base class for accessing a SQLite database.
 *
 * Manages the database connection lifecycle, ensuring initialization via `assertDb`.
 * Supports providing a database instance directly or a factory function for lazy initialization.
 *
 * Subclasses must implement the `initialize` method for specific setup tasks.
 */
export declare abstract class AbstractSqliteAccessor {
    #private;
    protected db: Database | undefined;
    constructor(c: Partial<Pick<IContainer, 'viewModelSqliteDb' | 'viewModelSqliteDbFactory'>>);
    protected abstract initialize(db: Database): Promise<void> | void;
    /**
     * Ensures that the database connection is initialized.
     * Uses a lock to prevent race conditions during concurrent initialization attempts.
     * If the database is not already initialized, it creates the database connection
     * using the provided factory and calls the `initialize` method.
     *
     * This method is idempotent and safe to call multiple times.
     */
    assertConnection(): Promise<void>;
}