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bellman

v1.1.12

Published

Yet another console logger. A pretty and powerful one, though.

Downloads

17

Readme

Bellman

Yet another console logger. A pretty and powerful one, though.

yarn add bellman

Methods

  • reg - registers the file from which logging methods will be called to adjust the width of the :caller row

Default config

const Logger = require('bellman')

new Logger()
  .reg()
  .info('info message')
  .debug('debug message')
  .warn('warning message')
  .error('error: %s', new Error())

Default config

Custom config

const Logger = require('bellman')

const userConfig = {
  timeTmp: 'HH:mm',
  lineTmp: ':level :time :caller :message',
  colorize: true,
  callerColor: 'yellow.bold',
  levelMap: {
    debug: 'blue',
    info: 'green',
    panic: 'red'
  },
  levelMin: 'debug',
  isFullStack: true
}

new Logger(userConfig)
  .reg()
  .info('info line')
  .debug('debug line')
  .panic('panic line: %s', new Error())

Custom config

Config

  • lineTmp - sets the logging line format. Supported placeholders:
    • :time - a timestamp in the format defined by the timeTmp config option
    • :level - a name of the logging method that has been called
    • :caller - a name of the file and a number of the line from which the logging method has been called
    • :message - a formatted message combined from the arguments passed to the logging method (util.format is used to fromat messages)
  • timeTmp - sets the timestamp format (moment is used to format timestamps)
  • colorize - overrides whether the coloring should be used or not (chalk is used for colorization)
  • callerColor - sets the :caller part color.
  • levelMap - sets the names, priorities, and colors of the logging methods
  • levelMin - sets the logging level
  • isFullStack - sets whether the error stack formatter should be used or not
    • if unset, all the lines that refer files out of the project's directory and all the files within node_modules directories will be removed
    • if set, no modifications will be applied to the error-stacks
    • isFullStack may be overridden with STACK=full and FULLSTACK=true environment variables

Events

  • log - emits metadata of a logged line:
    • time - a formateed timestamp
    • level - a name of the logged message that has been called
    • caller - a name of the file and a number of the line from which the logging method has been called
    • message - a formatted message
    • args - arguments passed the logged message