Elosnoc

A simple, light-weighted and highly-customizable logger system for javascript.

What's new

Added in v0.10.0

• Typescript enhancement: add support for customize the the type of the arguments of renderer
• Add support for customize the printer function
• Renderer and post-hook function now can read logLevel

Install

npm install Elosnoc

Basic Usage

import { Elosnoc } from 'Elosnoc'
const elosnoc = Elosnoc()
elosnoc.info('💬YAHO!')
elosnoc.warn('⚠️DANGER!')
elosnoc.error('❌OH NO!')
elosnoc.emergency('☠️KERNEL PANIC')

API

Elosnoc

function Elosnoc<T = unknown, P = string>(ElosnocOptions?: ElosnocOptions<T, P>): Logger

Get the logger.

Options

{
  /** Set Log Level. Default to 'DEBUG' */
  logLevel: LogLevel;
  /** Customize renderer, which will be use to render the content tox
   *  Use the default renderer when omitted
   * */
  renderer: (level: LogLevel, content: T, logLevel: LogLevel) => P;
  /** Customize the printer. By default, the message will be written to stdout
   *  if level is lower than WARN, and be written to stderr otherwise. */
  printer: (level: LogLevel, rendered: P, logLevel: LogLevel) => void;
  /** Customize post hook. It will be run after each rendering
   *  (i.e. will not be run if the level of the log is lower than logLevel
   *  as in this case the log will not be rendered.)
   * */
  postHook: (level: LogLevel, content: T, rendered: P, logLevel: LogLevel) => void;
}

LICENSE

Elosnoc is licensed under LGPL-2.1.