/**
 * Structured logging utility for glancey.
 *
 * Supports log levels (debug, info, warn, error) configured via environment variable.
 */
/** Available log levels in order of severity */
export type LogLevel = 'debug' | 'info' | 'warn' | 'error' | 'silent';
/**
 * Logger instance for structured logging.
 */
export declare const logger: {
    /**
     * Log debug information. Only shown when GLANCEY_LOG_LEVEL=debug.
     */
    debug(message: string, context?: string, data?: Record<string, unknown>): void;
    /**
     * Log informational messages. Default level.
     */
    info(message: string, context?: string, data?: Record<string, unknown>): void;
    /**
     * Log warning messages.
     */
    warn(message: string, context?: string, data?: Record<string, unknown>): void;
    /**
     * Log error messages.
     */
    error(message: string, context?: string, error?: unknown): void;
    /**
     * Get current log level.
     */
    getLevel(): LogLevel;
    /**
     * Check if debug logging is enabled.
     */
    isDebugEnabled(): boolean;
};
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