/*!
 * Configuration System for Fingerprint OSS
 * Copyright (c) 2025 Akshat Kotpalliwar (alias IntegerAlex on GitHub)
 * Licensed under LGPL-3.0
 */
import { FingerprintWarning } from './errors.js';
/**
 * Environment types supported by the configuration system
 */
export type Environment = 'TEST' | 'DEV' | 'STAGING' | 'PROD';
/**
 * Log levels for structured logging
 */
export type LogLevel = 'error' | 'warn' | 'info' | 'verbose' | 'debug';
export declare const DEFAULT_GEO_TIMEOUT_MS = 4500;
/**
 * Configuration interface for environment-aware settings
 */
export interface FingerprintConfig {
    /** Current environment */
    environment: Environment;
    /** Enable verbose logging for testing */
    verbose: boolean;
    /** Enable transparency mode for GDPR compliance */
    transparency: boolean;
    /** Custom message for data collection transparency */
    message?: string;
    /** Log level for structured logging */
    logLevel: LogLevel;
    /** Enable console output */
    enableConsoleLogging: boolean;
    /** Enable performance metrics logging */
    enablePerformanceLogging: boolean;
    /** Timeout for geolocation requests (ms) */
    geoTimeout: number;
}
/**
 * Detects the current environment based on various indicators
 */
export declare function detectEnvironment(): Environment;
/**
 * Initializes the configuration system with environment detection
 */
export declare function initializeConfig(customConfig?: Partial<FingerprintConfig>, warnings?: FingerprintWarning[]): FingerprintConfig;
/**
 * Gets the current configuration, initializing if necessary
 */
export declare function getConfig(): FingerprintConfig;
/**
 * Updates the current configuration
 */
export declare function updateConfig(updates: Partial<FingerprintConfig>): FingerprintConfig;
/**
 * Checks if verbose logging is enabled for the current environment
 */
export declare function isVerboseEnabled(): boolean;
/**
 * Checks if a log level should be output based on current configuration
 */
export declare function shouldLog(level: LogLevel): boolean;
/**
 * Structured logger with environment-aware controls
 */
export declare class StructuredLogger {
    private static formatMessage;
    static error(operation: string, message: string, data?: any): void;
    static warn(operation: string, message: string, data?: any): void;
    static info(operation: string, message: string, data?: any): void;
    static verbose(operation: string, message: string, data?: any): void;
    static debug(operation: string, message: string, data?: any): void;
    /**
     * Logs a block operation with timing information
     */
    static logBlock<T>(operation: string, description: string, block: () => T | Promise<T>): T | Promise<T>;
}
/**
 * Performance timing utility for development environments
 */
export declare class PerformanceTimer {
    private static timers;
    static start(label: string): void;
    static end(label: string): number;
}