import { ObjectCache } from './object.cache';
import * as AWS from 'aws-sdk';
export interface StsAssumeRoleConfig {
    roleArn: string;
    externalId?: string;
}
/**
 * Credentials need to be cached or a separate assume role will be called for each individual
 * instance of the credential chain
 */
declare class CredentialObjectCache extends ObjectCache<AWS.ChainableTemporaryCredentials, StsAssumeRoleConfig> {
    create(opts: StsAssumeRoleConfig): AWS.ChainableTemporaryCredentials;
}
export declare const CredentialsCache: CredentialObjectCache;
declare class S3ObjectCache extends ObjectCache<AWS.S3, StsAssumeRoleConfig> {
    create(opt: StsAssumeRoleConfig): AWS.S3;
}
export declare const S3Cache: S3ObjectCache;
export {};
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