import type { MigrationStorage, SqlQuerier } from '../../type/index.js';
/**
 * Stores migration state in a JSON file.
 * Useful for development or environments without a database.
 */
export declare class JsonMigrationStorage implements MigrationStorage {
    private executedMigrations;
    private readonly filePath;
    constructor(filePath?: string);
    ensureStorage(): Promise<void>;
    executed(): Promise<string[]>;
    logWithQuerier(_querier: SqlQuerier, migrationName: string): Promise<void>;
    unlogWithQuerier(_querier: SqlQuerier, migrationName: string): Promise<void>;
    private save;
}
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