• Seznamte se s nodejs, ověřte že máte nainstalovanou rozumně novou verzi a zkuste interakci s javascriptem skrze NodeJS terminál.
• Napište hello world který načte nějaký text ze standardního vstupu (například uživatelovo jméno „Adam“) a na standardní výstup vypíše „Ahoj Adam“.
• Vytvořte si ve svém oblíbeném IDE (např. VS Code) javascript projekt. Seznamte se s package.json souborem a zkuste přidat nějaký balíček jako závislost pomocí npm. Projekt verzujte pomocí GITu.

Using node18, how to write the simplest command line program in javascript, that uses stdin and stdout?

To create a simple command-line program in Node.js that uses stdin and stdout, you can follow these steps:

1. Make sure you have Node.js installed on your system.
2. Create a new directory for your project and navigate to it in your terminal.
3. Create a JavaScript file for your program. Let's call it simple-cli.js.
4. In simple-cli.js, you can use the process.stdin and process.stdout streams to read from stdin and write to stdout. Here's a basic example that reads input from stdin and writes it back to stdout:

// Import the 'readline' module to handle input and output
const readline = require('readline');
 
// Create an interface for reading from stdin and writing to stdout
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});
 
// Prompt the user for input
rl.question('Please enter something: ', (input) => {
  // Process the input
  const output = `You entered: ${input}`;
 
  // Write the output to stdout
  console.log(output);
 
  // Close the readline interface
  rl.close();
});

Save the file and run your program from the command line:

node simple-cli.js

That's it! You've created a simple command-line program in JavaScript using stdin and stdout. You can customize and expand upon this basic template to perform more complex tasks as needed.