import AsyncRetry from "async-retry";
import { TokenManager } from "./tokenManager";
import { Confidant, Task } from "./task";
import { EmptyContext } from "../util/emptyContext";
export declare abstract class Token extends Task<EmptyContext, string> {
    name: string;
    cacheKey_: string;
    tokenManager_: TokenManager;
    retry_: AsyncRetry.Options;
    constructor(confidant: Confidant<EmptyContext, Record<string, any>>, name: string, cacheKey_: string, tokenManager_: TokenManager, retry_?: AsyncRetry.Options);
    initialize(): Promise<string>;
    onDestroy_(): void;
    retryFetchToken_(): Promise<string>;
    abstract fetchToken(): Promise<string>;
    invalidate(path?: string): Promise<void>;
    nextRefreshTime(data: string, refetchBufferTimeMs?: number): number;
}
export declare const JWT: typeof Token;
//# sourceMappingURL=token.d.ts.map