/**
 *
 * Creates a Heroku application backend.
 * @param {string} appName The Heroku application name
 */
export declare const heroku: (appName: string) => (req: Request, basePath: string) => Promise<Response>;
/**
 *  Creates a Glitch project backend.
 * @param projectName The name of the glitch project (like <name>.glitch.me)
 */
export declare const glitch: (projectName: string) => (req: Request, basePath: string) => Promise<Response>;
/**
 * Creates a hosted Ghost backend.
 * @param subdomain Ghost subdomain (like <fly-io>.ghost.io)
 * @param customDomain Custom domain ghost expects (only if setup with Ghost control panel)
 */
export declare const ghost: (subdomain: string, customDomain?: string | undefined) => (req: Request, basePath: string) => Promise<Response>;
/**
 * Creates a surge.sh backend
 * @param {string} subdomain The <subdomain>.surge.sh for the surge.sh site
 */
export declare const surge: (subdomain: string) => (req: Request, basePath: string) => Promise<Response>;
/**
 * Creates a generic proxy backend
 * @param {string} origin The origin server to use (should be an ip, or resolve to a different IP)
 * @param {Object} [headers] Headers to pass to the origin server
 */
export declare const generic: (origin: string, headers: Headers) => (req: Request, basePath: string) => Promise<Response>;
/**
 * Creates a backend to proxy published Github Pages sites. Auto detects sites with cnames specified.
 * @param {string} repository The <organization>/<repository> to request.
 */
export declare const githubPages: (repository: string) => (req: Request, basePath: string) => Promise<Response>;
/**
 *
 * Creates a UnMarkDocs application backend.
 * @param {string} appName The UnMarkDocs application name
 */
export declare const unmarkdocs: (appName: string) => (req: Request, basePath: string) => Promise<Response>;
declare const backends: {
    generic: (origin: string, headers: Headers) => (req: Request, basePath: string) => Promise<Response>;
    ghost: (subdomain: string, customDomain?: string | undefined) => (req: Request, basePath: string) => Promise<Response>;
    githubPages: (repository: string) => (req: Request, basePath: string) => Promise<Response>;
    glitch: (projectName: string) => (req: Request, basePath: string) => Promise<Response>;
    heroku: (appName: string) => (req: Request, basePath: string) => Promise<Response>;
    surge: (subdomain: string) => (req: Request, basePath: string) => Promise<Response>;
    unmarkdocs: (appName: string) => (req: Request, basePath: string) => Promise<Response>;
};
export default backends;