chalk 0.4.0

Terminal string styling done right. Much color.


Platform: npm

Language: JavaScript

License: MIT

View on registry:

Install: npm install chalk@0.4.0


Terminal string styling done right

Build Status

colors.js used to be the most popular string styling module, but it has serious deficiencies like extending String.prototype which causes all kinds of problems. Although there are other ones, they either do too much or not enough.

Chalk is a clean and focused alternative.



  • Highly performant
  • Doesn't extend String.prototype
  • Expressive API
  • Ability to nest styles
  • Clean and focused
  • Auto-detects color support
  • Actively maintained
  • Used by ~3000 modules


$ npm install --save chalk


Chalk comes with an easy to use composable API where you just chain and nest the styles you want.

var chalk = require('chalk');
// style a string'Hello world!');
// combine styled and normal strings'Hello') + 'World' +'!');
// compose multiple styles using the chainable API'Hello world!');
// pass in multiple arguments'Hello', 'World!', 'Foo', 'bar', 'biz', 'baz');
// nest styles'Hello', chalk.underline.bgBlue('world') + '!');
// nest styles of the same type even (color, underline, background)
 'I am a green line ' +'with a blue substring') +
 ' that becomes green again!'

Easily define your own themes.

var chalk = require('chalk');
var error =;

Take advantage of console.log string substitution.

var name = 'Sindre';
console.log('Hello %s'), name);
//=> Hello Sindre


chalk.<style>[.<style>...](string, [string...])

Example:'Hello', 'world');

Chain styles and call the last one as a method with a string argument. Order doesn't matter, and later styles take precedent in case of a conflict. This simply means that is equivalent to

Multiple arguments will be separated by space.


Color support is automatically detected, but you can override it by setting the enabled property. You should however only do this in your own code as it applies globally to all chalk consumers.

If you need to change this in a reusable module create a new instance:

var ctx = new chalk.constructor({enabled: false});


Detect whether the terminal supports color. Used internally and handled for you, but exposed for convenience.

Can be overridden by the user with the flags --color and --no-color. For situations where using --color is not possible, add an environment variable FORCE_COLOR with any value to force color. Trumps --no-color.


Exposes the styles as ANSI escape codes.

Generally not useful, but you might need just the .open or .close escape code if you're mixing externally styled strings with your own.

var chalk = require('chalk');
//=> {open: '\u001b[31m', close: '\u001b[39m'}
console.log( + 'Hello' +;


Check whether a string has color.


Strip color from a string.

Can be useful in combination with .supportsColor to strip color on externally styled text when it's not supported.


var chalk = require('chalk');
var styledString = getText();
if (!chalk.supportsColor) {
 styledString = chalk.stripColor(styledString);



  • reset
  • bold
  • dim
  • italic (not widely supported)
  • underline
  • inverse
  • hidden
  • strikethrough (not widely supported)


  • black
  • red
  • green
  • yellow
  • blue (on Windows the bright version is used as normal blue is illegible)
  • magenta
  • cyan
  • white
  • gray

Background colors

  • bgBlack
  • bgRed
  • bgGreen
  • bgYellow
  • bgBlue
  • bgMagenta
  • bgCyan
  • bgWhite


Chalk does not support support anything other than the base eight colors, which guarantees it will work on all terminals and systems. Some terminals, specifically xterm compliant ones, will support the full range of 8-bit colors. For this the lower level ansi-256-colors package can be used.


If you're on Windows, do yourself a favor and use cmder instead of cmd.exe.


MIT © Sindre Sorhus

веселые картинки развлекательные гифки интресные факты смешные видео смешные истории из соцсетей

GitHub Repository

sindresorhus/chalk sindresorhus/chalk

Terminal string styling done right

Language: JavaScript

Created: August 03, 2013 00:20

Last updated: March 26, 2015 02:11

Last pushed: March 25, 2015 12:20

Size: 1.02 MB

Stars: 1,652

Forks: 33

Watchers: 31

Open issues: 2

Top Contributors

Sindre Sorhus Joshua Appelman Sean McArthur Michael Kühnel David Keijser Noam Okman Andrew Kennedy Charlike Mike Reagent


  • 1.0.0 - February 23, 2015 07:41
  • 0.5.1 - July 09, 2014 20:24
  • 0.5.0 - July 04, 2014 21:23
  • 0.4.0 - December 13, 2013 19:30
  • 0.3.0 - October 19, 2013 15:58
  • 0.2.1 - August 29, 2013 14:15
  • 0.2.0 - August 03, 2013 16:48
  • 0.1.1 - August 03, 2013 01:38
  • 0.1.0 - August 03, 2013 00:21

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