import { SecurityHeadersConfig } from './types';
import { HttpContext, HttpRequest, HttpResponse } from '../types';
export declare class SecurityHeadersMiddleware<Req extends HttpRequest = HttpRequest, Res extends HttpResponse = HttpResponse> {
    private config;
    constructor(config?: SecurityHeadersConfig);
    middleware(): (req: Req, res: Res, next: () => void) => void;
    process(context: HttpContext): void;
    private setSecurityHeaders;
    updateConfig(newConfig: Partial<SecurityHeadersConfig>): void;
    getConfig(): SecurityHeadersConfig;
}
export declare function createSecurityHeadersMiddleware<Req extends HttpRequest = HttpRequest, Res extends HttpResponse = HttpResponse>(config?: SecurityHeadersConfig): SecurityHeadersMiddleware<Req, Res>;
export declare const securityPresets: {
    strict: {
        enabled: boolean;
        headers: {
            contentSecurityPolicy: string;
            frameOptions: string;
            contentTypeOptions: boolean;
            xssProtection: string;
            referrerPolicy: string;
            strictTransportSecurity: string;
            permissionsPolicy: string;
            crossOriginEmbedderPolicy: string;
            crossOriginOpenerPolicy: string;
            crossOriginResourcePolicy: string;
        };
    };
    balanced: {
        enabled: boolean;
        headers: {
            contentSecurityPolicy: string;
            frameOptions: string;
            contentTypeOptions: boolean;
            xssProtection: string;
            referrerPolicy: string;
            strictTransportSecurity: boolean;
            permissionsPolicy: string;
            crossOriginEmbedderPolicy: boolean;
            crossOriginOpenerPolicy: string;
            crossOriginResourcePolicy: string;
        };
    };
    minimal: {
        enabled: boolean;
        headers: {
            contentSecurityPolicy: boolean;
            frameOptions: string;
            contentTypeOptions: boolean;
            xssProtection: string;
            referrerPolicy: string;
            strictTransportSecurity: boolean;
            permissionsPolicy: boolean;
            crossOriginEmbedderPolicy: boolean;
            crossOriginOpenerPolicy: boolean;
            crossOriginResourcePolicy: boolean;
        };
    };
};