// lib/index.jsconsole.log(process.argv[2]);console.log(process.argv[3]);

$ node lib/index.js foo bar
foo
bar

const[,,firstArg]=process.argv;if(!firstArg){console.error("Please pass one argument!!");process.exit(1);}constmsg=`
  Hello!! ${firstArg} san.
  I am Toshihisa Tomatsu.
  GitHub: https://github.com/toshi-toma
  Twitter: https://twitter.com/toshi__toma
`;console.log(msg);

$ node lib/cli.js tom

  Hello!! tom san.
  I am Toshihisa Tomatsu.
  GitHub: https://github.com/toshi-toma
  Twitter: https://twitter.com/toshi__toma

// ...constreadline=require("readline");constrl=readline.createInterface({input:process.stdin,output:process.stdout});rl.question("Please enter names for your project: ",answer=>{console.log(`Thank you!! Let's start ${answer}`);rl.close();});

node bin/cli.js tom

    Hello!! tom san.
    I am Toshihisa Tomatsu.
    GitHub: https://github.com/toshi-toma
    Twitter: https://twitter.com/toshi__toma

Please enter names for your project: 

$ npm init -y

{//..."bin":{"cli":"bin/cli.js"},//...}

#!/usr/bin/env node
require("../lib/index")();

constreadline=require("readline");module.exports=()=>{const[,,firstArg]=process.argv;if(!firstArg){console.error("Please pass one argument!!");process.exit(1);}constmsg=`
    Hello!! ${firstArg} san.
    I am Toshihisa Tomatsu.
    GitHub: https://github.com/toshi-toma
    Twitter: https://twitter.com/toshi__toma
  `;constrl=readline.createInterface({input:process.stdin,output:process.stdout});console.log(msg);rl.question("Please enter names for your project: ",answer=>{console.log(`Thank you!! Let's start ${answer}`);rl.close();});};

$ npm linkaudited 1 package in 0.951s
found 0 vulnerabilities

/usr/local/bin/cli -> /usr/local/lib/node_modules/@toshi-toma/cli/bin/cli.js
/usr/local/lib/node_modules/@toshi-toma/cli -> /Users/toshi-toma/dev/github.com/toshi-toma/cli

$ cli
Please pass one argument!!

$ npm whoamitoshi-toma

{"name":"@toshi-toma/cli","publishConfig":{"access":"public"},//...}

npx @toshi-toma/cli tom

    Hello!! tom san.
    I am Toshihisa Tomatsu.
    GitHub: https://github.com/toshi-toma
    Twitter: https://twitter.com/toshi__toma

Please enter names for your project:

require("yargs").scriptName("console").usage("$0 <cmd> [args]").command("hello [name]","console your name!",yargs=>{yargs.positional("name",{type:"string",default:"Toshihisa",describe:"the name to say hello to"});},function(argv){console.log("hello",argv.name,"welcome to yargs!");}).help().argv;

$ node lib/yargs.js --helpconsole <cmd>[args]
コマンド:
  console hello [name]  console your name!

オプション:
  --version  バージョンを表示                                [真偽]
  --help     ヘルプを表示                                    [真偽]

constargv=require("minimist")(process.argv.slice(2));console.log(argv);

$ node lib/minimist.js src -a bar --watch{ _: [ 'src' ], a: 'bar', watch: true }

constcli=require("cac")();cli.option("--type [type]","Choose a project type",{default:"node"});cli.option("--name <name>","Provide your name");cli.command("lint [...files]","Lint files").action((files,options)=>{console.log(files,options);});cli.help();cli.version("0.0.0");cli.parse();

$ node lib/cac.js --helpcac.js v0.0.0

Usage:
  $ cac.js <command>[options]

Commands:
  lint [...files]  Lint files

For more info, run any command with the `--help` flag:
  $ cac.js lint --help
Options:
  --type [type]  Choose a project type (default: node)
  --name <name>  Provide your name
  -h, --help     Display this message
  -v, --version  Display version number

constprogram=require("commander");program.command("clone <source> [destination]").description("clone a repository into a newly created directory").action((source,destination)=>{console.log("clone command called");});program.version("0.1.0").command("install [name]","install one or more packages").command("list","list packages installed",{isDefault:true}).parse(process.argv);

constmeow=require("meow");constfoo=require(".");constcli=meow(`
    Usage
      $ foo <input>

    Options
      --rainbow, -r  Include a rainbow

    Examples
      $ foo unicorns --rainbow
      🌈 unicorns 🌈
`,{flags:{rainbow:{type:"boolean",alias:"r"}}});console.log(cli);foo(cli.input[0],cli.flags);

constchalk=require("chalk");console.log(chalk.blue("Hello")+" World"+chalk.red("!"));console.log(chalk.blue.bgRed.bold("Hello world!"));console.log(chalk.blue("Hello","World!","Foo","bar","biz","baz"));console.log(chalk.red("Hello",chalk.underline.bgBlue("world")+"!"));

constora=require("ora");constspinner=ora("Loading unicorns").start();setTimeout(()=>{spinner.color="yellow";spinner.text="Loading rainbows";},1000);

constSpinner=require("clui").Spinner;letcountdown=newSpinner("Exiting in 5 seconds...  ",["⣾","⣽","⣻","⢿","⡿","⣟","⣯","⣷"]);countdown.start();letnumber=5;setInterval(function(){number--;countdown.message("Exiting in "+number+" seconds...  ");if(number===0){process.stdout.write("\n");process.exit(0);}},1000);

constfiglet=require("figlet");figlet("Hello World!!",function(err,data){console.log(data);});

$ node lib/figlet.js
  _   _      _ _        __        __         _     _ _ _
 | | | | ___| | | ___   \ \      / /__  _ __| | __| | | |
 | |_| |/ _ \ | |/ _ \   \ \ /\ / / _ \| '__| |/ _` | | |
 |  _  |  __/ | | (_) |   \ V  V / (_) | |  | | (_| |_|_|
 |_| |_|\___|_|_|\___/     \_/\_/ \___/|_|  |_|\__,_(_|_)

importReactfrom"react";import{render,Box}from"ink";constDemo=()=><Box>HelloWorld</Box>;
render(<Demo/>);

constshell=require("shelljs");console.log(shell.which("git"));console.log(shell.cat("package.json"));shell.cp("package.json","package-copy.json");shell.ls("lib/**/*.js").forEach(function(file){console.log(file);});

constclear=require("clear");clear();console.log("Hello clear");

constinquirer=require("inquirer");inquirer.prompt([{name:"name",message:"What's your name?",default:"toshi-toma"},{type:"list",name:"job",message:"What is your occupation?",choices:["Frontend","Backend","Infra"]},{type:"checkbox",name:"country",message:"Where are you from?",choices:["Japna","US","China","Others"]}]).then(({name,job,country})=>{console.log(name);console.log(job);console.log(country);});

constListr=require("listr");consttasks=newListr([{title:"Task 1",task:()=>Promise.resolve("Foo")},{title:"Can be skipped",skip:()=>{if(Math.random()>0.5){return"Reason for skipping";}},task:()=>"Bar"},{title:"Task 3",task:()=>Promise.resolve("Bar")}]);tasks.run().catch(err=>{console.error(err);});

$ node lib/listr.js
✔ Task 1
  ↓ Can be skipped [skipped]
    → Reason for skipping
  ✔ Task 3