import { Cache } from './cache';
import type { ClientCredentialsResponse } from './xsuaa-service-types';
import type { IasResource } from './destination';
/** *
 * @internal
 * @param tenantId - The ID of the tenant to cache the token for.
 * @param clientId - ClientId to fetch the token.
 * @returns The cache key.
 */
export declare function getCacheKey(tenantId: string | undefined, clientId: string): string | undefined;
/**
 * An interface for data the is used for IAS client credentials cache keys
 * @internal
 */
interface IasClientCredentialsCacheKeyData {
    /**
     * The hostname of the IAS instance.
     * @example tenant.accounts400.ondemand.com
     */
    iasInstance: string;
    /**
     * The client credentials client ID.
     */
    clientId: string;
    /**
     * The BTP instanced ID supplied with the token request.
     */
    appTid?: string | undefined;
    resource?: IasResource | undefined;
}
/** *
 * @internal
 * @param data.iasInstance - The IAS instance (tenant) hostname the token is fetched from.
 * @param data.appTid - The BTP instance (tenant) id (App-Tid)
 * @param data.clientId - ClientId to fetch the token.
 * @param data.resource - The App-To-App resource the token is scoped for.
 * @returns The cache key.
 */
export declare function getIasCacheKey(data: IasClientCredentialsCacheKeyData): string | undefined;
/**
 * @internal
 */
export declare const clientCredentialsTokenCache: {
    getToken: (tenantId: string | undefined, clientId: string) => ClientCredentialsResponse | undefined;
    cacheToken: (tenantId: string | undefined, clientId: string, token: ClientCredentialsResponse) => void;
    getTokenIas: (data: IasClientCredentialsCacheKeyData) => ClientCredentialsResponse | undefined;
    cacheIasToken: (data: IasClientCredentialsCacheKeyData, tokenResponse: ClientCredentialsResponse) => void;
    clear: () => void;
    getCacheInstance: () => Cache<ClientCredentialsResponse>;
};
export {};