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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 with npm:
$ npm install --save ansi-colors
ansi-colors is the fastest Node.js library for terminal styling. A more performant drop-in replacement for chalk, with no dependencies.
Blazing fast - Fastest terminal styling library in node.js, 10-20x faster than chalk!
Drop-in replacement for chalk.
No dependencies (Chalk has 7 dependencies in its tree!)
Safe - Does not modify the String.prototype
like colors.
Supports nested colors, and does not have the nested styling bug that is present in colorette, chalk, and kleur.
Supports chained colors.
Toggle color support on or off.
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!'));
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'));
console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`));
ansi-colors
does not have the nested styling bug found in colorette, chalk, and kleur.
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)
Easily enable/disable colors.
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'));
Use the .unstyle
method to strip ANSI codes from a string.
console.log(c.unstyle(c.blue.bold('foo bar baz')));
//=> 'foo bar baz'
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.)
bold
hidden
italic
underline
inverse
strikethrough
reset
Libraries tested
MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB.
Load time
Time it takes to load the first time require()
is called:
1.915ms
12.437ms
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 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB
Load time
Time it takes to load the first time require()
is called:
1.494ms
11.523ms
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))
Contributing
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
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:
$ npm install && npm test
Building docs
(This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)
To generate the readme, run the following command:
$ npm install -g verbose/verb#dev verb-generate-readme && verb
You might also be interested in these projects:
| Commits | Contributor |
| --- | --- |
| 42 | doowb |
| 38 | jonschlinkert |
| 6 | lukeed |
| 2 | Silic0nS0ldier |
| 1 | dwieeb |
| 1 | jorgebucaran |
| 1 | madhavarshney |
| 1 | chapterjason |
Brian Woodward
Please consider supporting me on Patreon, or start your own Patreon page!
Copyright © 2019, Brian Woodward. Released under the MIT License.
This file was generated by verb-generate-readme, v0.8.0, on March 03, 2019.