ansi-colors Donate NPM version NPM monthly downloads NPM total downloads Linux Build Status

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

Please consider following this project's author, Brian Woodward, and consider starring the project to show your :heart: and support.

Install

Install with npm:

sh $ npm install --save ansi-colors

image

Why use this?

ansi-colors is the fastest Node.js library for terminal styling. A more performant drop-in replacement for chalk, with no dependencies.

Usage

```js const c = require('ansi-colors');

console.log(c.red('This is a red string!')); console.log(c.green('This is a red string!')); console.log(c.cyan('This is a cyan string!')); console.log(c.yellow('This is a yellow string!')); ```

image

Chained colors

js console.log(c.bold.red('this is a bold red message')); console.log(c.bold.yellow.italic('this is a bold yellow italicized message')); console.log(c.green.bold.underline('this is a bold green underlined message'));

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Nested colors

js console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`));

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Nested styling bug

ansi-colors does not have the nested styling bug found in colorette, chalk, and kleur.

``js const { bold, red } = require('ansi-styles'); console.log(bold(foo ${red.dim('bar')} baz`));

const colorette = require('colorette'); console.log(colorette.bold(foo ${colorette.red(colorette.dim('bar'))} baz));

const kleur = require('kleur'); console.log(kleur.bold(foo ${kleur.red.dim('bar')} baz));

const chalk = require('chalk'); console.log(chalk.bold(foo ${chalk.red.dim('bar')} baz)); ```

Results in the following

(sans icons and labels)

image

Toggle color support

Easily enable/disable colors.

```js const c = require('ansi-colors');

// disable colors manually c.enabled = false;

// or use a library to automatically detect support c.enabled = require('color-support').hasBasic;

console.log(c.red('I will only be colored red if the terminal supports colors')); ```

Strip ANSI codes

Use the .unstyle method to strip ANSI codes from a string.

js console.log(c.unstyle(c.blue.bold('foo bar baz'))); //=> 'foo bar baz'

Available styles

Note that bright and bright-background colors are not always supported.

| Colors | Background Colors | Bright Colors | Bright Background Colors | | ------- | ----------------- | ------------- | ------------------------ | | black | bgBlack | blackBright | bgBlackBright | | red | bgRed | redBright | bgRedBright | | green | bgGreen | greenBright | bgGreenBright | | yellow | bgYellow | yellowBright | bgYellowBright | | blue | bgBlue | blueBright | bgBlueBright | | magenta | bgMagenta | magentaBright | bgMagentaBright | | cyan | bgCyan | cyanBright | bgCyanBright | | white | bgWhite | whiteBright | bgWhiteBright | | gray | | | | | grey | | | |

(gray is the U.S. spelling, grey is more commonly used in the Canada and U.K.)

Style modifiers

Performance

Libraries tested

Mac

MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB.

Load time

Time it takes to load the first time require() is called:

Benchmarks

```

All Colors

ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled) chalk x 9,944 ops/sec ±2.53% (81 runs sampled)))

Chained colors

ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled) chalk x 2,111 ops/sec ±2.34% (83 runs sampled)

Nested colors

ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled) chalk x 4,590 ops/sec ±2.08% (82 runs sampled) ```

Windows

Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB

Load time

Time it takes to load the first time require() is called:

Benchmarks

```

All Colors

ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled)) chalk x 9,612 ops/sec ±3.31% (77 runs sampled)))

Chained colors

ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled) chalk x 2,267 ops/sec ±2.88% (80 runs sampled))

Nested colors

ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled) chalk x 4,446 ops/sec ±3.01% (82 runs sampled)) ```

About

Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
Running Tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ```
Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ```

Related projects

You might also be interested in these projects:

Contributors

| Commits | Contributor |
| --- | --- |
| 42 | doowb |
| 38 | jonschlinkert |
| 6 | lukeed |
| 2 | Silic0nS0ldier |
| 1 | dwieeb |
| 1 | jorgebucaran |
| 1 | madhavarshney |
| 1 | chapterjason |

Author

Brian Woodward

Please consider supporting me on Patreon, or start your own Patreon page!

License

Copyright © 2019, Brian Woodward. Released under the MIT License.


This file was generated by verb-generate-readme, v0.8.0, on March 03, 2019.