import { MiddlewareOptions } from '../utils';
/**
 * TypeORM EntitySubscriber that masks entities on serialization only.
 *
 * Mutating loaded entities in-place would cause TypeORM's UnitOfWork to
 * persist masked values on the next save. Instead, this subscriber installs
 * a `toJSON()` override on the loaded entity so HTTP responses and
 * `JSON.stringify()` produce masked output while the in-memory entity
 * remains writable.
 */
export declare class TypeORMSubscriber<Entity = any> {
    private readonly options;
    private readonly schema;
    constructor(options?: MiddlewareOptions<Entity>);
    afterLoad(entity: any): void;
}
export declare const typeorm: <T = any>(options?: MiddlewareOptions<T>) => TypeORMSubscriber<T>;
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