import { IdentityService } from '@sap/xssec';
import type { IdentityServiceCredentials } from './environment-accessor-types';
import type { JwtPayload } from '../jsonwebtoken-type';
/**
 * @internal
 * A cache for `IdentityService` instances.
 * Direct access from outside this module outside tests is discouraged.
 */
export declare const identityServicesCache: Map<string, IdentityService>;
/**
 * @internal
 * @param credentials - Identity service credentials extracted from a service binding or re-use service. Required to create the xssec `IdentityService` instance.
 * @param jwt - Optional JWT string or payload to extract the issuer URL for bearer assertion flows.
 * @param disableCache - Value to enable or disable JWKS cache in the xssec library. Defaults to false.
 * @returns An instance of {@link @sap/xssec/IdentityService} for the provided credentials.
 */
export declare function getIdentityServiceInstanceFromCredentials(credentials: IdentityServiceCredentials, jwt?: string | JwtPayload, disableCache?: boolean): IdentityService;