/**
 * AWS Secrets loader for brek.
 *
 * Config example:
 *
 * {
 *   "dbPassword": {
 *     "[awsSecret]": {
 *       "key": "my/db/password",
 *       "region": "us-west-2"  // optional; falls back to env var AWS_REGION env var or defaults to 'us-east-1'
 *     }
 *   }
 * }
 *
 */
export declare const awsSecret: (params: {
    key: string;
    region?: string;
}) => Promise<string>;