chalk命令行字体高亮

介绍

安装

$ npm install chalk

使用

基本用例

• 用例1:

const chalk = require('chalk');

console.log(chalk.blue('hello world!'));

• 用例2:

const chalk = require('chalk');
const log = console.log;
 
// Combine styled and normal strings
log(chalk.blue('Hello') + ' World' + chalk.red('!'));
 
// Compose multiple styles using the chainable API
log(chalk.blue.bgRed.bold('Hello world!'));
 
// Pass in multiple arguments
log(chalk.blue('Hello', 'World!', 'Foo', 'bar', 'biz', 'baz'));
 
// Nest styles
log(chalk.red('Hello', chalk.underline.bgBlue('world') + '!'));
 
// Nest styles of the same type even (color, underline, background)
log(chalk.green(
    'I am a green line ' +
    chalk.blue.underline.bold('with a blue substring') +
    ' that becomes green again!'
));
 
// ES2015 template literal
log(`
CPU: ${chalk.red('90%')}
RAM: ${chalk.green('40%')}
DISK: ${chalk.yellow('70%')}
`);
 
// ES2015 tagged template literal
log(chalk`
CPU: {red ${cpu.totalPercent}%}
RAM: {green ${ram.used / ram.total * 100}%}
DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%}
`);
 
// Use RGB colors in terminal emulators that support it.
log(chalk.keyword('orange')('Yay for orange colored text!'));
log(chalk.rgb(123, 45, 67).underline('Underlined reddish color'));
log(chalk.hex('#DEADED').bold('Bold gray!'));

• 用例3:

const chalk = require('chalk');
 
const error = chalk.bold.red;
const warning = chalk.keyword('orange');
 
console.log(error('Error!'));
console.log(warning('Warning!'));

• 用例4:

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

API

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

chalk.red.bold.underline('Hello', 'world');

chalk.level

const ctx = new chalk.Instance({level: 0});

Level	Description
0	All colors disabled
1	Basic color support (16 colors)
2	256 color support
3	Truecolor support (16 million colors)

chalk.supportsColor

• --color and --no-color
• --color=256 and --color=16m

chalk.stderr and chalk.stderr.supportsColor

Styles

Modifiers

• reset - Resets the current color chain.
• bold - Make text bold.
• dim - Emitting only a small amount of light.
• italic - Make text italic. (Not widely supported)
• underline - Make text underline. (Not widely supported)
• inverse- Inverse background and foreground colors.
• hidden - Prints the text, but makes it invisible.
• strikethrough - Puts a horizontal line through the center of the text. (Not widely supported)
• visible- Prints the text only when Chalk has a color level > 0. Can be useful for things that are purely cosmetic.

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

Tagged template literal

const chalk = require('chalk');
 
const miles = 18;
const calculateFeet = miles => miles * 5280;
 
console.log(chalk`
    There are {bold 5280 feet} in a mile.
    In {bold ${miles} miles}, there are {green.bold ${calculateFeet(miles)} feet}.
`);

console.log(chalk.bold.rgb(10, 100, 200)('Hello!'));
console.log(chalk.bold.rgb(10, 100, 200)`Hello!`);
console.log(chalk`{bold.rgb(10,100,200) Hello!}`);

256 and Truecolor color support

chalk.hex('#DEADED').underline('Hello, world!')
chalk.keyword('orange')('Some orange text')
chalk.rgb(15, 100, 204).inverse('Hello!')

chalk.bgHex('#DEADED').underline('Hello, world!')
chalk.bgKeyword('orange')('Some orange text')
chalk.bgRgb(15, 100, 204).inverse('Hello!')

• rgb - Example: chalk.rgb(255, 136, 0).bold('Orange!')
• hex - Example: chalk.hex('#FF8800').bold('Orange!') keyword (CSS keywords) - Example: chalk.keyword('orange').bold('Orange!')
• hsl - Example: chalk.hsl(32, 100, 50).bold('Orange!')
• hsv - Example: chalk.hsv(32, 100, 100).bold('Orange!')
• hwb - Example: chalk.hwb(32, 0, 50).bold('Orange!')
• ansi - Example: chalk.ansi(31).bgAnsi(93)('red on yellowBright')
• ansi256 - Example: chalk.bgAnsi256(194)('Honeydew, more or less')

related

• chalk-cli - CLI for this module
• ansi-styles - ANSI escape codes for styling strings in the terminal
• supports-color - Detect whether a terminal supports color
• strip-ansi - Strip ANSI escape codes
• strip-ansi-stream - Strip ANSI escape codes from a stream
• has-ansi - Check if a string has ANSI escape codes
• ansi-regex - Regular expression for matching ANSI escape codes
• wrap-ansi - Wordwrap a string with ANSI escape codes
• slice-ansi - Slice a string with ANSI escape codes
• color-convert - Converts colors between different models
• chalk-animation - Animate strings in the terminal
• gradient-string - Apply color gradients to strings
• chalk-pipe - Create chalk style schemes with simpler style strings
• terminal-link - Create clickable links in the terminal