packages/backend/src/helpers/logger.js

import * as winston from 'winston';
import appConfig from '../config/app.js';

const levels = {
  error: 0,
  warn: 1,
  http: 2,
  info: 3,
  debug: 4,
};

const colors = {
  error: 'red',
  warn: 'yellow',
  info: 'green',
  http: 'magenta',
  debug: 'white',
};

winston.addColors(colors);

const format = winston.format.combine(
  winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss:ms' }),
  winston.format.colorize({ all: true }),
  winston.format.printf(
    (info) => `${info.timestamp} [${info.level}]: ${info.message}`
  )
);

const transports = [
  new winston.transports.Console(),
  new winston.transports.File({
    filename: 'logs/error.log',
    level: 'error',
  }),
  new winston.transports.File({ filename: 'logs/server.log' }),
];

export const logger = winston.createLogger({
  level: appConfig.logLevel,
  levels,
  format,
  transports,
});

export default logger;