mirror of
https://github.com/thangisme/notes.git
synced 2024-11-01 01:17:29 -04:00
214 lines
6.0 KiB
Markdown
214 lines
6.0 KiB
Markdown
<h1 align="center">
|
|
<br>
|
|
<br>
|
|
<img width="360" src="https://cdn.rawgit.com/chalk/chalk/19935d6484811c5e468817f846b7b3d417d7bf4a/logo.svg" alt="chalk">
|
|
<br>
|
|
<br>
|
|
<br>
|
|
</h1>
|
|
|
|
> Terminal string styling done right
|
|
|
|
[](https://travis-ci.org/chalk/chalk)
|
|
[](https://coveralls.io/r/chalk/chalk?branch=master)
|
|
[](https://www.youtube.com/watch?v=9auOCbH5Ns4)
|
|
|
|
|
|
[colors.js](https://github.com/Marak/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](https://github.com/yeoman/yo/issues/68). Although there are other ones, they either do too much or not enough.
|
|
|
|
**Chalk is a clean and focused alternative.**
|
|
|
|
|
|
|
|
|
|
## Why
|
|
|
|
- Highly performant
|
|
- Doesn't extend `String.prototype`
|
|
- Expressive API
|
|
- Ability to nest styles
|
|
- Clean and focused
|
|
- Auto-detects color support
|
|
- Actively maintained
|
|
- [Used by ~4500 modules](https://www.npmjs.com/browse/depended/chalk) as of July 15, 2015
|
|
|
|
|
|
## Install
|
|
|
|
```
|
|
$ npm install --save chalk
|
|
```
|
|
|
|
|
|
## Usage
|
|
|
|
Chalk comes with an easy to use composable API where you just chain and nest the styles you want.
|
|
|
|
```js
|
|
var chalk = require('chalk');
|
|
|
|
// style a string
|
|
chalk.blue('Hello world!');
|
|
|
|
// combine styled and normal strings
|
|
chalk.blue('Hello') + 'World' + chalk.red('!');
|
|
|
|
// compose multiple styles using the chainable API
|
|
chalk.blue.bgRed.bold('Hello world!');
|
|
|
|
// pass in multiple arguments
|
|
chalk.blue('Hello', 'World!', 'Foo', 'bar', 'biz', 'baz');
|
|
|
|
// nest styles
|
|
chalk.red('Hello', chalk.underline.bgBlue('world') + '!');
|
|
|
|
// nest styles of the same type even (color, underline, background)
|
|
chalk.green(
|
|
'I am a green line ' +
|
|
chalk.blue.underline.bold('with a blue substring') +
|
|
' that becomes green again!'
|
|
);
|
|
```
|
|
|
|
Easily define your own themes.
|
|
|
|
```js
|
|
var chalk = require('chalk');
|
|
var error = chalk.bold.red;
|
|
console.log(error('Error!'));
|
|
```
|
|
|
|
Take advantage of console.log [string substitution](http://nodejs.org/docs/latest/api/console.html#console_console_log_data).
|
|
|
|
```js
|
|
var name = 'Sindre';
|
|
console.log(chalk.green('Hello %s'), name);
|
|
//=> Hello Sindre
|
|
```
|
|
|
|
|
|
## API
|
|
|
|
### chalk.`<style>[.<style>...](string, [string...])`
|
|
|
|
Example: `chalk.red.bold.underline('Hello', 'world');`
|
|
|
|
Chain [styles](#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 `Chalk.red.yellow.green` is equivalent to `Chalk.green`.
|
|
|
|
Multiple arguments will be separated by space.
|
|
|
|
### chalk.enabled
|
|
|
|
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:
|
|
|
|
```js
|
|
var ctx = new chalk.constructor({enabled: false});
|
|
```
|
|
|
|
### chalk.supportsColor
|
|
|
|
Detect whether the terminal [supports color](https://github.com/chalk/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`.
|
|
|
|
### chalk.styles
|
|
|
|
Exposes the styles as [ANSI escape codes](https://github.com/chalk/ansi-styles).
|
|
|
|
Generally not useful, but you might need just the `.open` or `.close` escape code if you're mixing externally styled strings with your own.
|
|
|
|
```js
|
|
var chalk = require('chalk');
|
|
|
|
console.log(chalk.styles.red);
|
|
//=> {open: '\u001b[31m', close: '\u001b[39m'}
|
|
|
|
console.log(chalk.styles.red.open + 'Hello' + chalk.styles.red.close);
|
|
```
|
|
|
|
### chalk.hasColor(string)
|
|
|
|
Check whether a string [has color](https://github.com/chalk/has-ansi).
|
|
|
|
### chalk.stripColor(string)
|
|
|
|
[Strip color](https://github.com/chalk/strip-ansi) from a string.
|
|
|
|
Can be useful in combination with `.supportsColor` to strip color on externally styled text when it's not supported.
|
|
|
|
Example:
|
|
|
|
```js
|
|
var chalk = require('chalk');
|
|
var styledString = getText();
|
|
|
|
if (!chalk.supportsColor) {
|
|
styledString = chalk.stripColor(styledString);
|
|
}
|
|
```
|
|
|
|
|
|
## Styles
|
|
|
|
### Modifiers
|
|
|
|
- `reset`
|
|
- `bold`
|
|
- `dim`
|
|
- `italic` *(not widely supported)*
|
|
- `underline`
|
|
- `inverse`
|
|
- `hidden`
|
|
- `strikethrough` *(not widely supported)*
|
|
|
|
### Colors
|
|
|
|
- `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`
|
|
|
|
|
|
## 256-colors
|
|
|
|
Chalk does not 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](https://github.com/jbnicolai/ansi-256-colors) package can be used.
|
|
|
|
|
|
## Windows
|
|
|
|
If you're on Windows, do yourself a favor and use [`cmder`](http://bliker.github.io/cmder/) instead of `cmd.exe`.
|
|
|
|
|
|
## Related
|
|
|
|
- [chalk-cli](https://github.com/chalk/chalk-cli) - CLI for this module
|
|
- [ansi-styles](https://github.com/chalk/ansi-styles/) - ANSI escape codes for styling strings in the terminal
|
|
- [supports-color](https://github.com/chalk/supports-color/) - Detect whether a terminal supports color
|
|
- [strip-ansi](https://github.com/chalk/strip-ansi) - Strip ANSI escape codes
|
|
- [has-ansi](https://github.com/chalk/has-ansi) - Check if a string has ANSI escape codes
|
|
- [ansi-regex](https://github.com/chalk/ansi-regex) - Regular expression for matching ANSI escape codes
|
|
- [wrap-ansi](https://github.com/chalk/wrap-ansi) - Wordwrap a string with ANSI escape codes
|
|
|
|
|
|
## License
|
|
|
|
MIT © [Sindre Sorhus](http://sindresorhus.com)
|