import { S3ExpressIdentityCacheEntry } from "./S3ExpressIdentityCacheEntry";
export declare class S3ExpressIdentityCache {
  private data;
  private lastPurgeTime;
  static EXPIRED_CREDENTIAL_PURGE_INTERVAL_MS: number;
  constructor(data?: Record<string, S3ExpressIdentityCacheEntry>);
  get(key: string): undefined | S3ExpressIdentityCacheEntry;
  set(
    key: string,
    entry: S3ExpressIdentityCacheEntry
  ): S3ExpressIdentityCacheEntry;
  delete(key: string): void;
  purgeExpired(): Promise<void>;
}