console-prefix

Drop in replacement for console to add a prefix to messages. Adds an ISO timestamp by default.

Example

var console = require('console-prefix')
 
console.log('Hello!')
// Output:
// 2015-04-29T22:46:37.444Z Hello!

Customise prefix

var console = require('console-prefix')('[Sprocket]')
 
function Sprocket () {
  console.log('in constructor')
}
 
new Sprocket()
// Output:
// [Sprocket] in constructor

var console = require('console-prefix')(function () {
  return new Date() + ' --'
})
 
console.log('Hello World!')
// Output:
// Wed Apr 29 2015 19:56:24 GMT-0300 (CLT) -- Hello World!

Options

Configure the proxy object returned by passing an options object:

var console = require('console-prefix')({
  prefix: function () { return new Date().toISOString() },
  methods: ['log', 'info', 'warn', 'error'],
  console: global.console
})

prefix

A string or function to prefix log messages with. Defaults to an ISO timestamp.

methods

The logging methods the prefix should be applied to. Defaults to 'log', 'info', 'warn', 'error'.

console

The logger object to proxy to. Defaults to global.console or window.console (depending on the environment).