/**
 * Process environment variables in strings
 * Replaces ${ENV_VAR} with the value of process.env.ENV_VAR
 */
export declare function processEnvVars(obj: any): any;
/**
 * Load a YAML file and parse its contents
 */
export declare function loadYamlFile<T>(filePath: string): T;
/**
 * Save data to a YAML file
 */
export declare function saveYamlFile(filePath: string, data: any): void;