/**
 * Logger interface for SDK debugging and tracing
 */
export interface Logger {
    /**
     * Debug level logging - detailed information for debugging
     */
    debug(message: string, meta?: Record<string, unknown>): void;
    /**
     * Info level logging - general information about operations
     */
    info(message: string, meta?: Record<string, unknown>): void;
    /**
     * Warning level logging - potentially harmful situations
     */
    warn(message: string, meta?: Record<string, unknown>): void;
    /**
     * Error level logging - error events
     */
    error(message: string, meta?: Record<string, unknown>): void;
}
/**
 * Console logger implementation with [23blocks] prefix
 */
export declare const consoleLogger: Logger;
/**
 * No-op logger that silently discards all log messages
 */
export declare const noopLogger: Logger;
/**
 * Generate a unique request ID
 * Format: req_<timestamp>_<random>
 */
export declare function generateRequestId(): string;
/**
 * Mask sensitive values in objects for logging
 */
export declare function maskSensitiveData(data: Record<string, unknown>, sensitiveKeys?: string[]): Record<string, unknown>;
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