@jsreport/jsreport-core/lib/main/createDefaultLoggerFormat.js

javascript based business reporting

const { MESSAGE } = require('triple-beam')
const colors = require('@colors/colors/safe')
const winston = require('winston')

module.exports = (options = {}) => {
  return winston.format((info) => {
    const { level, message, timestamp, ...meta } = info
    let logDate

    if (timestamp == null) {
      logDate = new Date()
      info.timestamp = logDate.getTime()
    } else {
      logDate = new Date(timestamp)
    }

    info[MESSAGE] = `${options.timestamp === true ? `${logDate.toISOString()} - ` : ''}${level}: ${info.userLevel === true ? colors.cyan(message) : message}`

    const metaKeys = Object.keys(meta)

    if (metaKeys.length > 0) {
      info[MESSAGE] += ` ${metaKeys.map((k) => `${k}=${meta[k]}`).join(', ')}`
    }

    if (info.userLevel === true) {
      info.level = colors.cyan(info.level)
    }

    return info
  })
}