mirror of
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315 lines
9.8 KiB
Markdown
315 lines
9.8 KiB
Markdown
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# ansi-colors [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://travis-ci.org/doowb/ansi-colors)
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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).
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Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save ansi-colors
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```
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## Why use this?
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ansi-colors is _the fastest Node.js library for terminal styling_. A more performant drop-in replacement for chalk, with no dependencies.
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* _Blazing fast_ - Fastest terminal styling library in node.js, 10-20x faster than chalk!
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* _Drop-in replacement_ for [chalk](https://github.com/chalk/chalk).
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* _No dependencies_ (Chalk has 7 dependencies in its tree!)
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* _Safe_ - Does not modify the `String.prototype` like [colors](https://github.com/Marak/colors.js).
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* Supports [nested colors](#nested-colors), **and does not have the [nested styling bug](#nested-styling-bug) that is present in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur)**.
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* Supports [chained colors](#chained-colors).
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* [Toggle color support](#toggle-color-support) on or off.
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## Usage
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```js
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const c = require('ansi-colors');
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console.log(c.red('This is a red string!'));
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console.log(c.green('This is a red string!'));
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console.log(c.cyan('This is a cyan string!'));
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console.log(c.yellow('This is a yellow string!'));
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```
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## Chained colors
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```js
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console.log(c.bold.red('this is a bold red message'));
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console.log(c.bold.yellow.italic('this is a bold yellow italicized message'));
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console.log(c.green.bold.underline('this is a bold green underlined message'));
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```
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## Nested colors
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```js
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console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`));
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```
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### Nested styling bug
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`ansi-colors` does not have the nested styling bug found in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur).
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```js
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const { bold, red } = require('ansi-styles');
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console.log(bold(`foo ${red.dim('bar')} baz`));
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const colorette = require('colorette');
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console.log(colorette.bold(`foo ${colorette.red(colorette.dim('bar'))} baz`));
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const kleur = require('kleur');
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console.log(kleur.bold(`foo ${kleur.red.dim('bar')} baz`));
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const chalk = require('chalk');
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console.log(chalk.bold(`foo ${chalk.red.dim('bar')} baz`));
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```
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**Results in the following**
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(sans icons and labels)
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## Toggle color support
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Easily enable/disable colors.
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```js
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const c = require('ansi-colors');
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// disable colors manually
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c.enabled = false;
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// or use a library to automatically detect support
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c.enabled = require('color-support').hasBasic;
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console.log(c.red('I will only be colored red if the terminal supports colors'));
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```
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## Strip ANSI codes
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Use the `.unstyle` method to strip ANSI codes from a string.
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```js
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console.log(c.unstyle(c.blue.bold('foo bar baz')));
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//=> 'foo bar baz'
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```
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## Available styles
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**Note** that bright and bright-background colors are not always supported.
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| Colors | Background Colors | Bright Colors | Bright Background Colors |
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| ------- | ----------------- | ------------- | ------------------------ |
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| black | bgBlack | blackBright | bgBlackBright |
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| red | bgRed | redBright | bgRedBright |
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| green | bgGreen | greenBright | bgGreenBright |
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| yellow | bgYellow | yellowBright | bgYellowBright |
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| blue | bgBlue | blueBright | bgBlueBright |
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| magenta | bgMagenta | magentaBright | bgMagentaBright |
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| cyan | bgCyan | cyanBright | bgCyanBright |
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| white | bgWhite | whiteBright | bgWhiteBright |
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| gray | | | |
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| grey | | | |
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_(`gray` is the U.S. spelling, `grey` is more commonly used in the Canada and U.K.)_
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### Style modifiers
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* dim
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* **bold**
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* hidden
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* _italic_
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* underline
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* inverse
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* ~~strikethrough~~
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* reset
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## Aliases
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Create custom aliases for styles.
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```js
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const colors = require('ansi-colors');
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colors.alias('primary', colors.yellow);
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colors.alias('secondary', colors.bold);
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console.log(colors.primary.secondary('Foo'));
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```
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## Themes
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A theme is an object of custom aliases.
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```js
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const colors = require('ansi-colors');
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colors.theme({
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danger: colors.red,
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dark: colors.dim.gray,
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disabled: colors.gray,
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em: colors.italic,
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heading: colors.bold.underline,
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info: colors.cyan,
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muted: colors.dim,
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primary: colors.blue,
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strong: colors.bold,
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success: colors.green,
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underline: colors.underline,
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warning: colors.yellow
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});
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// Now, we can use our custom styles alongside the built-in styles!
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console.log(colors.danger.strong.em('Error!'));
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console.log(colors.warning('Heads up!'));
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console.log(colors.info('Did you know...'));
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console.log(colors.success.bold('It worked!'));
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```
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## Performance
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**Libraries tested**
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* ansi-colors v3.0.4
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* chalk v2.4.1
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### Mac
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> MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB.
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**Load time**
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Time it takes to load the first time `require()` is called:
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* ansi-colors - `1.915ms`
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* chalk - `12.437ms`
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**Benchmarks**
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```
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# All Colors
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ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled)
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chalk x 9,944 ops/sec ±2.53% (81 runs sampled)))
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# Chained colors
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ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled)
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chalk x 2,111 ops/sec ±2.34% (83 runs sampled)
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# Nested colors
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ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled)
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chalk x 4,590 ops/sec ±2.08% (82 runs sampled)
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```
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### Windows
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> Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB
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**Load time**
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Time it takes to load the first time `require()` is called:
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* ansi-colors - `1.494ms`
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* chalk - `11.523ms`
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**Benchmarks**
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```
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# All Colors
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ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled))
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chalk x 9,612 ops/sec ±3.31% (77 runs sampled)))
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# Chained colors
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ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled)
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chalk x 2,267 ops/sec ±2.88% (80 runs sampled))
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# Nested colors
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ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled)
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chalk x 4,446 ops/sec ±3.01% (82 runs sampled))
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```
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## About
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<details>
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<summary><strong>Contributing</strong></summary>
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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</details>
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<details>
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<summary><strong>Running Tests</strong></summary>
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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:
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```sh
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$ npm install && npm test
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```
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</details>
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<details>
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<summary><strong>Building docs</strong></summary>
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_(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.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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</details>
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### Related projects
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You might also be interested in these projects:
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* [ansi-wrap](https://www.npmjs.com/package/ansi-wrap): Create ansi colors by passing the open and close codes. | [homepage](https://github.com/jonschlinkert/ansi-wrap "Create ansi colors by passing the open and close codes.")
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* [strip-color](https://www.npmjs.com/package/strip-color): Strip ANSI color codes from a string. No dependencies. | [homepage](https://github.com/jonschlinkert/strip-color "Strip ANSI color codes from a string. No dependencies.")
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 48 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 42 | [doowb](https://github.com/doowb) |
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| 6 | [lukeed](https://github.com/lukeed) |
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| 2 | [Silic0nS0ldier](https://github.com/Silic0nS0ldier) |
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| 1 | [dwieeb](https://github.com/dwieeb) |
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| 1 | [jorgebucaran](https://github.com/jorgebucaran) |
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| 1 | [madhavarshney](https://github.com/madhavarshney) |
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| 1 | [chapterjason](https://github.com/chapterjason) |
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### Author
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**Brian Woodward**
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* [GitHub Profile](https://github.com/doowb)
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* [Twitter Profile](https://twitter.com/doowb)
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* [LinkedIn Profile](https://linkedin.com/in/woodwardbrian)
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### License
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Copyright © 2019, [Brian Woodward](https://github.com/doowb).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 01, 2019._
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