import * as fs from 'fs/promises';

/*

    //Every file comes with a set of details that we can inspect using Node.js. 

    In particular, using the stat() method provided by the fs module.

    You call it passing a file path, and once Node.js gets the file details it 

    will call the callback function you pass, with 2 parameters: an error message, 

    and the file stats:

*/

​

const fs = require('fs');

​

// The simplest way to READ A FILE in Node.js is to use the 

// fs.readFile() method, passing it the file path, encoding and a 

// callback function that will be called with the file data 

// (and the error):

fs.readFile('/Users/joe/test.txt', 'utf8', (err, data) => {

  if (err) {

    console.error(err);

    return;

  }

  console.log(data);

});

​

// The easiest way to WRITE TO FILES in Node.js is to use the 

// fs.writeFile() API.

const content = 'Some content!';

fs.writeFile('/Users/joe/test.txt', content, err => {

  if (err) {

    console.error(err);

  }

  // file written successfully

});

​

fs.stat('/Users/joe/test.txt', (err, stats) => {

  if (err) {

    console.error(err);

  }

  // we have access to the file stats in `stats`

});

​

// Node.js also provides a sync method, which blocks the thread until the 

// file stats are ready:

​

try {

  const stats = fs.statSync('/Users/joe/test.txt');

} catch (err) {

  console.error(err);

}

​

/*

 // The file information is included in the stats variable. 

    + if the file is a directory or a file, using stats.isFile() 

    and stats.isDirectory()

    + if the file is a symbolic link using stats.isSymbolicLink()

    + The file size in bytes using stats.size

*/

​

// With love @kouqhar