Node CLI

const process = require("node:process");
process.argv.forEach((val, index) => {
  console.log(`${index}:${val}`);
});

//node process-argv.js one two three
/* outputs:
	0:/opt/nodejs/16.14.2/bin/node
	1:/workspaces/MyBlog/a.js
	2:one
	3:two
	4:three
*/

#!/usr/bin/env node
const program = require("commander");
program
  .name("better-clone") // CLI name
  .version("0.0.1") // version
  .option("-v,--verbose", "verposity that can be increased");

// add commands
program
  .command("clone <source> [destination]") // clone is the command，source is  a required argument，destination is optional
  .option("-d,--depths <level>", "git clone depths")
  .description("cloe a repository into a newly created directory")
  .action((source, destination, cmdObj) => {
    console.log(
      `start cloning from ${source} to ${destination} with depth ${cmdObj.depths}`
    );
  });

program.parse(process.argv); // need pass process.argv to get arguments

// node ./commander.js clone ./src ./to --depths=2
// start cloning from ./src to ./to with depth 2

const inquirer = require('inquirer')
inquirer
  .prompt([
    /* Pass your questions in here */
    { type: 'input', name: 'username', message: "What's ur name?" },
    {
        type: 'checkbox',
        name: 'gender',
        message: "What's ur gender?",
        choices: [ 'male', 'female' ]
    },
    {
        type: 'number',
        name: 'age',
        message: 'How old are u?',
        validate: input => Number.isNaN(Number(input))
            ? 'Number Required!' : true
        },
    {
        type: 'password',
        name: 'secret',
        message: 'Tell me a secret.',
        mask: 'x'
    }
  ])
  .then(answers => {
    console.log(`Answers are:\n ${JSON.stringify(answers)}`)
  })
  .catch(error => {
    if (error.isTtyError) {
      // Prompt couldn't be rendered in the current environment
    } else {
      // Something else when wrong
    }
  })

// node inquirer.js

const chalk=require('chalk')
const log=console.log
const chalk=require('chalk')
const log=console.log

log(chalk.blue('\nhello')+'world'+chalk.red('!\n'))

log(chalk.blue.bgRed.bold('Hello world!\n'))

log(chalk.blue('Hello','word','Foo','bar','biz','baz\n'))

log(chalk.red('Hello',chalk.underline.bgBlue('word')+'!\n'))

import React, {useState, useEffect} from 'react';
import {render, Text} from 'ink';

const Counter = () => {
	const [counter, setCounter] = useState(0);

	useEffect(() => {
		const timer = setInterval(() => {
			setCounter(previousCounter => previousCounter + 1);
		}, 100);

		return () => {
			clearInterval(timer);
		};
	}, []);

	return <Text color="green">{counter} tests passed</Text>;
};

render(<Counter />);

const shell = require('shelljs');
if(!shell.which('git')){
  shell.echo('Sorry, this script requires git')
  shell.exit(1)
}
shell.rm('-rf','out/Release')

shell.ls('*.js').forEach(function(file)=>{
  shell.sed('-i','BUILD_VSRSION','v0.1.2',file)
})
shell.cd('..')

if(shell.exec('git commit -am "Auto-commit"').code !==0){
  shell.echo('Error: Git commit failes')
  shell.exit(1)
}

const execa =require('execa');
(async ()=>{
  const {stdout}=await execa()
  console.log(stdout)
})()

const execa =require('execa');
execa('echo',['unicorns']).stdout.pipe(process.stdout)