holesail-logger/index.js

Advanced logger for Holesail ecosystem

const colors = require('barely-colours')

class HolesailLogger {
  constructor ({ prefix = 'Holesail', enabled = false, level = 1 } = {}) {
    this.prefix = prefix
    this.enabled = enabled
    this.minLevel = level
    this.LOG_LEVELS = {
      DEBUG: 0,
      INFO: 1,
      WARN: 2,
      ERROR: 3
    }
  }

  log ({ type, msg }) {
    if (!this.enabled || type < this.minLevel) return
    let levelStr, colorFunc, consoleMethod
    switch (type) {
      case this.LOG_LEVELS.DEBUG:
        levelStr = 'DEBUG'
        colorFunc = colors.brightBlack
        consoleMethod = console.log
        break
      case this.LOG_LEVELS.INFO:
        levelStr = 'INFO'
        colorFunc = colors.green
        consoleMethod = console.log
        break
      case this.LOG_LEVELS.WARN:
        levelStr = 'WARN'
        colorFunc = colors.yellow
        consoleMethod = console.warn
        break
      case this.LOG_LEVELS.ERROR:
        levelStr = 'ERROR'
        colorFunc = colors.red
        consoleMethod = console.error
        break
      default:
        return
    }
    const timestamp = colors.brightBlack(new Date().toISOString())
    const prefix = colors.blue(`[${this.prefix}]`)
    const level = colorFunc(`[${levelStr}]`)
    consoleMethod(`${timestamp} ${prefix} ${level} ${msg}`)
  }
}

module.exports = HolesailLogger