/**
 * Mask sensitive values for logging/display
 * @param value The value to mask
 * @param showLength Whether to include the length of masked value
 * @returns Masked string representation
 */
export declare function maskSensitiveValue(value: string, showLength?: boolean): string;
/**
 * Check if a property name should be considered sensitive
 * @param propertyName The name of the property to check
 * @returns Whether the property should be masked
 */
export declare function isSensitiveProperty(propertyName: string): boolean;
/**
 * Create a sanitized copy of an object with sensitive values masked
 * @param obj Object containing potentially sensitive information
 * @returns Safely sanitized copy for logging
 */
export declare function sanitizeObjectForLogging(obj: Record<string, any>): Record<string, any>;
/**
 * Safely log configuration without exposing sensitive values
 * @param message Log message
 * @param config Configuration object with potentially sensitive values
 * @param level Optional log level, defaults to 'info'
 */
export declare function logConfigSafely(message: string, config: Record<string, any>, level?: 'debug' | 'info' | 'warn' | 'error'): void;
/**
 * Redact sensitive information from error messages
 * @param message Error message that may contain sensitive information
 * @returns Redacted message
 */
export declare function redactSensitiveInfoFromErrorMessage(message: string): string;