Node.js File System (fs Module) | asadmukhtar.info
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Node.js File System (fs Module)

The fs module allows interacting with the file system in Node.js.

1. Importing fs Module

const fs = require('fs');

2. Common fs Methods

  • Read File:

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

Sync:

const data = fs.readFileSync('file.txt', 'utf8');
console.log(data);

Write to File:

  • Async:
fs.writeFile('file.txt', 'Hello!', (err) => { if (err) throw err; });

Sync:

fs.writeFileSync('file.txt', 'Hello!');

Delete File:

  • Async
fs.unlink('file.txt', (err) => { if (err) throw err; });

Sync:

fs.unlinkSync('file.txt');

Create Directory:

fs.mkdir('newDir', (err) => { if (err) throw err; });

Remove Directory:

fs.rmdir('newDir', (err) => { if (err) throw err; });

Conclusion

The fs module lets you perform file operations like reading, writing, deleting, and more, both asynchronously and synchronously.