import { AskResponse, QPQConfig } from 'quidproquo-core';
import { RouteOptions, ServiceAllowedOrigin } from '../config/settings/route';
import { SeoEvent } from '../types';
import { HTTPEvent, HttpEventHeaders } from '../types/HTTPEvent';
export declare const getHeaderValue: (header: string, headers: HttpEventHeaders) => string | null;
export declare function askReadRequiredHeader(event: HTTPEvent, requiredHeader: string): AskResponse<string>;
export declare function askReadRequiredHeaders(event: HTTPEvent, requiredHeaders: string[]): AskResponse<string[]>;
export declare const getAccessTokenFromHeaders: (headers: HttpEventHeaders) => string | undefined;
export declare const convertContentSecurityPolicyEntryToString: (baseDomain: string, allowedOrigin: ServiceAllowedOrigin | string) => string;
export declare const getAllowedOrigins: (qpqConfig: QPQConfig, route: RouteOptions) => string[];
export declare const getCorsHeaders: (qpqConfig: QPQConfig, route: RouteOptions, reqHeaders: HttpEventHeaders) => HttpEventHeaders;
export declare const isBot: (event: HTTPEvent | SeoEvent<any>) => boolean;