import { NestMiddleware } from '@nestjs/common';
import { CrossOriginOpenerPolicyOptions } from 'helmet/dist/types/middlewares/cross-origin-opener-policy';
export declare class HelmetCrossOriginOpenerPolicyMiddleware implements NestMiddleware {
    static configure(opts: CrossOriginOpenerPolicyOptions): void;
    private static options;
    use(req: any, res: any, next: any): void;
}