slots/node_modules/pretty-format/node_modules/ansi-styles

ansi-styles

ANSI escape codes for styling strings in the terminal

You probably want the higher-level chalk module for styling your strings.

Install

$ npm install ansi-styles

Usage

const style = require('ansi-styles');

console.log(`${style.green.open}Hello world!${style.green.close}`);


// Color conversion between 256/truecolor
// NOTE: When converting from truecolor to 256 colors, the original color
//       may be degraded to fit the new color palette. This means terminals
//       that do not support 16 million colors will best-match the
//       original color.
console.log(`${style.color.ansi256(style.rgbToAnsi256(199, 20, 250))}Hello World${style.color.close}`)
console.log(`${style.color.ansi16m(...style.hexToRgb('#abcdef'))}Hello World${style.color.close}`)

API

Each style has an open and close property.

Styles

Modifiers

• reset
• bold
• dim
• italic (Not widely supported)
• underline
• overline Supported on VTE-based terminals, the GNOME terminal, mintty, and Git Bash.
• inverse
• hidden
• strikethrough (Not widely supported)

Colors

• black
• red
• green
• yellow
• blue
• magenta
• cyan
• white
• blackBright (alias: gray, grey)
• redBright
• greenBright
• yellowBright
• blueBright
• magentaBright
• cyanBright
• whiteBright

Background colors

• bgBlack
• bgRed
• bgGreen
• bgYellow
• bgBlue
• bgMagenta
• bgCyan
• bgWhite
• bgBlackBright (alias: bgGray, bgGrey)
• bgRedBright
• bgGreenBright
• bgYellowBright
• bgBlueBright
• bgMagentaBright
• bgCyanBright
• bgWhiteBright

Advanced usage

By default, you get a map of styles, but the styles are also available as groups. They are non-enumerable so they don't show up unless you access them explicitly. This makes it easier to expose only a subset in a higher-level module.

• style.modifier
• style.color
• style.bgColor

Example

console.log(style.color.green.open);

Raw escape codes (i.e. without the CSI escape prefix \u001B[ and render mode postfix m) are available under style.codes, which returns a Map with the open codes as keys and close codes as values.

Example

console.log(style.codes.get(36));
//=> 39

256 / 16 million (TrueColor) support

ansi-styles allows converting between various color formats and ANSI escapes, with support for 256 and 16 million colors.

The following color spaces from color-convert are supported:

• rgb
• hex
• ansi256

To use these, call the associated conversion function with the intended output, for example:

style.color.ansi256(style.rgbToAnsi256(100, 200, 15)); // RGB to 256 color ansi foreground code
style.bgColor.ansi256(style.hexToAnsi256('#C0FFEE')); // HEX to 256 color ansi foreground code

style.color.ansi16m(100, 200, 15); // RGB to 16 million color foreground code
style.bgColor.ansi16m(...style.hexToRgb('#C0FFEE')); // Hex (RGB) to 16 million color foreground code

Related

• ansi-escapes - ANSI escape codes for manipulating the terminal

Maintainers

• Sindre Sorhus
• Josh Junon

For enterprise

Available as part of the Tidelift Subscription.

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