export type LogLevel = 'error' | 'warn' | 'info' | 'debug';
interface LoggerConfig {
    level: LogLevel;
    enableQueries: boolean;
    enablePerformance: boolean;
}
declare class Logger {
    private winston;
    private config;
    constructor(config: LoggerConfig);
    error(message: string, meta?: Record<string, any>): void;
    warn(message: string, meta?: Record<string, any>): void;
    info(message: string, meta?: Record<string, any>): void;
    debug(message: string, meta?: Record<string, any>): void;
    query(query: string, variables?: Record<string, any>): void;
    performance(operation: string, duration: number, meta?: Record<string, any>): void;
    updateConfig(config: Partial<LoggerConfig>): void;
}
export declare const createLogger: (config: LoggerConfig) => Logger;
export declare const getLogger: () => Logger;
export { Logger };
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