/**
 * Utility for sanitizing sensitive information from logs
 * Helps prevent exposure of Bot IDs, User IDs, tokens, and other sensitive data
 */
export interface SanitizationOptions {
    /** Whether to mask bot IDs (default: true) */
    maskBotIds?: boolean;
    /** Whether to mask user IDs (default: true) */
    maskUserIds?: boolean;
    /** Whether to redact tokens completely (default: true) */
    redactTokens?: boolean;
    /** Custom patterns to sanitize */
    customPatterns?: Array<{
        pattern: RegExp;
        replacement: string;
    }>;
}
/**
 * Masks a Slack Bot ID (B12345678 → B123****)
 */
export declare function maskBotId(botId: string): string;
/**
 * Masks a Slack User ID (U12345678 → U123****)
 */
export declare function maskUserId(userId: string): string;
/**
 * Redacts tokens (xoxb-*, xapp-*, xoxp-*)
 */
export declare function redactToken(token: string): string;
/**
 * Sanitizes a single string value
 */
export declare function sanitizeString(value: string, options?: SanitizationOptions): string;
/**
 * Recursively sanitizes an object, preserving structure but sanitizing string values
 */
export declare function sanitizeObject(obj: unknown, options?: SanitizationOptions, seen?: WeakSet<object>): unknown;
/**
 * Main sanitization function for logging
 * Accepts any type and returns a sanitized version safe for logging
 */
export declare function sanitizeForLogging(data: unknown, options?: SanitizationOptions): unknown;
/**
 * Safe console.log that automatically sanitizes all arguments
 */
export declare function safeLog(message: string, ...args: unknown[]): void;
/**
 * Safe console.error that automatically sanitizes all arguments
 */
export declare function safeError(message: string, ...args: unknown[]): void;
/**
 * Safe console.warn that automatically sanitizes all arguments
 */
export declare function safeWarn(message: string, ...args: unknown[]): void;
/**
 * Log levels enum
 */
export declare enum LogLevel {
    DEBUG = 0,
    INFO = 1,
    WARN = 2,
    ERROR = 3,
    NONE = 4
}
/**
 * Get log level from environment variable
 */
export declare function getLogLevelFromEnv(): LogLevel;
/**
 * Create a logger that automatically sanitizes all outputs with log level support
 */
export declare function createSafeLogger(prefix?: string): {
    debug: (message: string, ...args: unknown[]) => void;
    log: (message: string, ...args: unknown[]) => void;
    info: (message: string, ...args: unknown[]) => void;
    warn: (message: string, ...args: unknown[]) => void;
    error: (message: string, ...args: unknown[]) => void;
};
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