The front-end technology: the command module and its execution method

First, create a command module

 

1、package.json

 

{
  "name": "@uad/nat-cli",
  "version": "0.0.2",
  "description": "Demo",
  "main": "index.js",
  "bin": {
    "artisan": "./src/artisan.js"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git"
  },
  "keywords": [
    "CLI"
  ],
  "author": "chunrong.liu",
  "license": "ISC",
  "dependencies": {
    "shelljs": "^0.8.3",
    "yargs": "^13.2.4"
  }
}

 

 

2、src/artisan.js

#!/usr/bin/env node
 
require('shelljs/global');
 
var argv = require('yargs')
.option('n', {
alias : 'name',
demand: true,
default: 'tom',
describe: 'your name',
type: 'string'
})
.usage('Usage: hello [options]')
.example('hello -n tom', 'say hello to Tom')
.help('h')
.alias('h', 'help')
.epilog('Copyright 2019')
.command("morning", "good morning", function (yargs) {
echo("Good Morning");
var argv = yargs.reset()
.option("m", {
alias: "message",
description: "provide any sentence"
})
.help("h")
.alias("h", "help")
.argv;
echo(argv.m);
})
.argv;
 
console.log('hello ', argv.n);
console.log(argv._);

 

 

Second, the use

After 1, the command module globally registered by npm link, can use this command in command window

 

2, reference command module package.json in other modules, and increasing the scripts

"scripts": {
  "artisan": "artisan"
},
"dependencies": {
  ......
  "@uad/nat-cli": "^0.0.2",
  ......
}

 

 

After increasing dependence on the command module, after performing npm install, shortcuts to commands generated at node_modules / .bin directory, can be used in scripts.

 

Command as follows:

npm run artisan -- -h

 

or

 
npx artisan -h
 
 
Usage: hello [options]

 

command:

artisan morning  good morning

 

Options:

  --version Show the version number [Istanbul]

  -n, --name your name [String] [required] [Default: "tom"]

  -h, --help display help information [Istanbul]

 

 

Example:

  hello -n tom  say hello to Tom
 
 
  Copyright 2019.