Javascript Programming Tutorials, Guides & Best Practices

Start by creating a simple CLI that accepts commands and options using yargs. Create a new file named index.js:

#!/usr/bin/env node

const yargs = require('yargs');
const chalk = require('chalk');

yargs.version('1.0.0');

yargs.command({
    command: 'greet',
    describe: 'Greet the user',
    builder: {
        name: {
            describe: 'Name of the user',
            demandOption: true,
            type: 'string'
        }
    },
    handler(argv) {
        console.log(chalk.green(`Hello, ${argv.name}!`));
    }
});

yargs.parse();