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- <p align="center">
- <img width="250" src="/yargs-logo.png">
- </p>
- <h1 align="center"> Yargs </h1>
- <p align="center">
- <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b>
- </p>
- <br>
-
- [![Build Status][travis-image]][travis-url]
- [![Coverage Status][coveralls-image]][coveralls-url]
- [![NPM version][npm-image]][npm-url]
- [![js-standard-style][standard-image]][standard-url]
- [![Conventional Commits][conventional-commits-image]][conventional-commits-url]
- [![Slack][slack-image]][slack-url]
-
- ## Description :
- Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface.
-
- It gives you:
-
- * commands and (grouped) options (`my-program.js serve --port=5000`).
- * a dynamically generated help menu based on your arguments.
-
- > <img width="400" src="/screen.png">
-
- * bash-completion shortcuts for commands and options.
- * and [tons more](/docs/api.md).
-
- ## Installation
-
- Stable version:
- ```bash
- npm i yargs --save
- ```
-
- Bleeding edge version with the most recent features:
- ```bash
- npm i yargs@next --save
- ```
-
- ## Usage :
-
- ### Simple Example
-
- ````javascript
- #!/usr/bin/env node
- const argv = require('yargs').argv
-
- if (argv.ships > 3 && argv.distance < 53.5) {
- console.log('Plunder more riffiwobbles!')
- } else {
- console.log('Retreat from the xupptumblers!')
- }
- ````
-
- ```bash
- $ ./plunder.js --ships=4 --distance=22
- Plunder more riffiwobbles!
-
- $ ./plunder.js --ships 12 --distance 98.7
- Retreat from the xupptumblers!
- ```
-
- ### Complex Example
-
- ```javascript
- #!/usr/bin/env node
- require('yargs') // eslint-disable-line
- .command('serve [port]', 'start the server', (yargs) => {
- yargs
- .positional('port', {
- describe: 'port to bind on',
- default: 5000
- })
- }, (argv) => {
- if (argv.verbose) console.info(`start server on :${argv.port}`)
- serve(argv.port)
- })
- .option('verbose', {
- alias: 'v',
- default: false
- })
- .argv
- ```
-
- Run the example above with `--help` to see the help for the application.
-
- ## Community :
-
- Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com).
-
- ## Documentation :
-
- ### Table of Contents
-
- * [Yargs' API](/docs/api.md)
- * [Examples](/docs/examples.md)
- * [Parsing Tricks](/docs/tricks.md)
- * [Stop the Parser](/docs/tricks.md#stop)
- * [Negating Boolean Arguments](/docs/tricks.md#negate)
- * [Numbers](/docs/tricks.md#numbers)
- * [Arrays](/docs/tricks.md#arrays)
- * [Objects](/docs/tricks.md#objects)
- * [Advanced Topics](/docs/advanced.md)
- * [Composing Your App Using Commands](/docs/advanced.md#commands)
- * [Building Configurable CLI Apps](/docs/advanced.md#configuration)
- * [Customizing Yargs' Parser](/docs/advanced.md#customizing)
- * [Contributing](/contributing.md)
-
- [travis-url]: https://travis-ci.org/yargs/yargs
- [travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg
- [coveralls-url]: https://coveralls.io/github/yargs/yargs
- [coveralls-image]: https://img.shields.io/coveralls/yargs/yargs.svg
- [npm-url]: https://www.npmjs.com/package/yargs
- [npm-image]: https://img.shields.io/npm/v/yargs.svg
- [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg
- [standard-url]: http://standardjs.com/
- [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg
- [conventional-commits-url]: https://conventionalcommits.org/
- [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg
- [slack-url]: http://devtoolscommunity.herokuapp.com
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