What are some examples of CommonJS and ES6 code?

Can you show me some examples of CommonJS and ES6 code?

Sure! CommonJS uses require to import modules, while ES6 uses import. Here's a quick comparison:

CommonJS:

const fs = require('fs');
fs.readFile('file.txt', 'utf8', (err, data) => {
    if (err) throw err;
    console.log(data);
});

ES6:

import { readFile } from 'fs/promises';

async function readFileAsync() {
    try {
        const data = await readFile('file.txt', 'utf8');
        console.log(data);
    } catch (err) {
        console.error(err);
    }
}
readFileAsync();

What are the main differences between CommonJS and ES6?

The main differences include:

1. Module Syntax: CommonJS uses require and module.exports, while ES6 uses import and export.
2. Loading: CommonJS modules are loaded synchronously, while ES6 modules are loaded asynchronously.
3. Scope: CommonJS modules have their own scope, while ES6 modules are in strict mode by default.

Can I use ES6 modules in Node.js?

Yes, you can use ES6 modules in Node.js starting from version 12. You need to either use the .mjs file extension or set "type": "module" in your package.json.