/**
 * adds the desired provider module to the request object,
 * based on the providerName parameter specified
 *
 * @param {Record<string, typeof Provider>} providers
 */
export function getProviderMiddleware(providers: Record<string, typeof Provider>, grantConfig: any): (req: object, res: object, next: Function, providerName: string) => void;
/**
 * @returns {Record<string, typeof Provider>}
 */
export function getDefaultProviders(): Record<string, typeof Provider>;
/**
 *
 * @typedef {{'module': typeof Provider, config: Record<string,unknown>}} CustomProvider
 *
 * @param {Record<string, CustomProvider>} customProviders
 * @param {Record<string, typeof Provider>} providers
 * @param {object} grantConfig
 */
export function addCustomProviders(customProviders: Record<string, CustomProvider>, providers: Record<string, typeof Provider>, grantConfig: object): void;
/**
 *
 * @param {{server: object, providerOptions: object}} companionOptions
 * @param {object} grantConfig
 * @param {(a: string) => string} getOauthProvider
 */
export function addProviderOptions(companionOptions: {
    server: object;
    providerOptions: object;
}, grantConfig: object, getOauthProvider: (a: string) => string): void;
export type CustomProvider = {
    "module": typeof Provider;
    config: Record<string, unknown>;
};
import Provider from './Provider.js';