import { STSClient, STSClientConfig } from '@aws-sdk/client-sts';
export declare class STSServiceClient {
    readonly sts: STSClient;
    constructor(options?: STSClientConfig);
    getCallerIdentity(): Promise<import("@aws-sdk/client-sts").GetCallerIdentityCommandOutput>;
    assumeRole(roleArn: string, sessionName?: string, durationSeconds?: number): Promise<import("@aws-sdk/client-sts").AssumeRoleCommandOutput>;
}
/**
 * Get IAM role arn
 * @param roleName - Role name
 * @param accountId - AWS account id
 * @returns
 */
export declare function getIAMRoleArn(roleName: string, accountId?: string): string;