winston.js

const winston = require('winston');
const expressWinston = require('express-winston');

const config = require('./config');

const logger = winston.createLogger({
  level: config.log.level,
  format: winston.format.combine(winston.format.simple(), winston.format.colorize()),
  defaultMeta: {
    service: `pages-${config.app.appEnv}`,
  },
  transports: [new winston.transports.Console()],
  silent: config.log.silent,
});

const databaseLogger = winston.createLogger({
  level: 'warn',
  format: winston.format.combine(winston.format.simple(), winston.format.colorize()),
  defaultMeta: {
    service: `pages-${config.app.appEnv}-database`,
  },
  transports: [new winston.transports.Console()],
  silent: config.log.silent,
});

expressWinston.requestWhitelist.push('body');
expressWinston.bodyBlacklist.push('password', 'value');

const expressLogger = expressWinston.logger({
  format: winston.format.combine(winston.format.simple(), winston.format.colorize()),
  transports: [new winston.transports.Console()],
  skip: () => config.log.silent,
});

const expressErrorLogger = expressWinston.errorLogger({
  format: winston.format.combine(winston.format.json(), winston.format.colorize()),
  transports: [new winston.transports.Console()],
  skip: () => config.log.silent,
});

module.exports = {
  logger,
  expressLogger,
  expressErrorLogger,
  databaseLogger,
};