/**
 * Validate profile name before using in subprocess
 * Throws if invalid to prevent injection attacks
 */
export declare function validateProfileName(profile: string): void;
/**
 * Sanitize tokens and credentials from output
 * Removes AWS access keys, session tokens, and other sensitive data
 */
export declare function sanitizeOutput(output: string): string;
/**
 * Sanitize error messages before displaying to user
 */
export declare function sanitizeErrorMessage(error: string): string;
/**
 * Get environment variables safe to pass to subprocesses
 * Only passes necessary variables to minimize exposure
 */
export declare function getSubprocessEnv(): NodeJS.ProcessEnv;
/**
 * Format duration in milliseconds to human readable string
 */
export declare function formatDuration(ms: number): string;
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