Node.js - create file

In this article, we would like to show you how to create a file in Node.js.

Quick solution:

const fs = require('fs');

const filePath = './file.txt';
const fileDescriptor = fs.openSync(filePath, 'w');

// Hint: do not forget to close file.

Practical example

In this example, we use the fs.openSync() method that returns a file descriptor to created empty file.

const fs = require('fs');

const filePath = './file.txt';
const fileDescriptor = fs.openSync(filePath, 'w');

// Hint: do not forget to close file.

Note:

The solution truncates the file if it exists and create new if it doesn't.

Alternative solution

If you don’t need the file, wrap the function call in a fs.closeSync() to close it.

index.js file:

const fs = require('fs');

const filePath = './file.txt';
fs.closeSync(fs.openSync(filePath, 'w'));

Running:

node index.js

Result:

Project structure before:

/app/
 ├── node_modules/
 ├── index.js
 ├── package-lock.json
 └── package.json

 Project structure after:

/app/
 ├── node_modules/
 ├── file.txt
 ├── index.js
 ├── package-lock.json
 └── package.json