import type { JwtPayload } from '../jsonwebtoken-type';
import type { ServiceCredentials } from './environment-accessor-types';
/**
 * @internal
 * Retrieves a service binding of the given type and tries to match it based on the JWT, if given.
 * Returns `undefined` if no match is found.
 * If no JWT is given, returns the first binding of the given service type, if available.
 * @param service - The service type.
 * @param token - Either an encoded or decoded JWT.
 * @returns The service credentials, otherwise `undefined`.
 */
export declare function getServiceCredentials<ServiceCredentialsT extends ServiceCredentials>(service: string, token?: JwtPayload | string): ServiceCredentialsT | undefined;