import { VerificationEventEmitter } from './event-emitter';
import { VerificationEventType, EventData } from '../types/event-types';
export declare enum LogLevel {
    DEBUG = "debug",
    INFO = "info",
    WARN = "warn",
    ERROR = "error"
}
export interface LoggerConfig {
    level?: LogLevel;
    enableConsole?: boolean;
    customLogger?: (level: LogLevel, message: string, data?: any) => void;
    formatters?: {
        [key in VerificationEventType]?: (data: EventData) => string;
    };
}
export declare class EventLogger {
    private readonly emitter;
    private readonly config;
    private readonly subscriptions;
    constructor(emitter: VerificationEventEmitter, config?: LoggerConfig);
    private setupListeners;
    private handleEvent;
    private getLogLevel;
    private shouldLog;
    private formatMessage;
    private defaultLogger;
    destroy(): void;
}
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