export type AssumeRoleOptions = {
    endpoint: string;
    accessKeyId: string;
    accessKeySecret: string;
    roleArn: string;
    roleSessionName: string;
    policy?: string;
    durationSeconds?: number;
};
export declare function stsAssumeRole(options: AssumeRoleOptions): Promise<{
    RequestId: string;
    AssumedRoleUser: {
        AssumedRoleId: string;
        Arn: string;
    };
    Credentials: {
        SecurityToken: string;
        Expiration: string;
        AccessKeySecret: string;
        AccessKeyId: string;
    };
}>;