How To Create Folder In Node Js

This article walks you through a couple of different ways to create a directory if it doesn't exist in Node.js.

Using the FS module

FS which stands for "file system", is a standard module of Node.js so you can use it without installing any third-party packages. The module provides some useful methods: Advertisements

existsSync: Used to synchronously check whether a file or a directory exists.
mkdirSync: Used to synchronously create a new directory with a given name.
exists: Used to asynchronously test if a given path exists. This one is depreciated and you should no longer call it in new projects.
mkdir: Used to asynchronously create a new directory.

Example 1

          const fs = require('fs')  const directory = './some-dir' if(!fs.existsSync(directory)){   fs.mkdirSync(directory) }

And here's the project structure after that: Advertisements

          . ├── Readme.md ├── package-lock.json ├── package.json ├── some-dir └── src     └── index.js

Example 2

          const fs = require('fs')  const dir = './new-folder'  fs.mkdir(dir, (err) => {   if(err){     console.log('The directory already exists!')   } else {     console.log('Successfully created a new directory')   } })

In the examples above, the path of the directory is the related path to your package.json file.

Using a third-party package

What if you want to create a directory that nests deep in many other directories that even don't exist? For instance, the path is:

          const dir = './some/deep/path/kindacode/node-tutorials'

The solutions are you can perform multiple steps iteratively using the above method or using a third-party library that can help us get the job done with only 1 or 2 lines of code. There are so many names to chose from, such as make-dir, makdirp, fs-extra.

In the example below, we'll use fs-extra. You can add it to your project by running:

          npm i fs-extra

Using the ensureDir method provided by the library to ensure that a given directory exists. If the directory structure does not exist, it will be created:

          const fse = require('fs-extra')  const dir = './some/deep/path/kindacode/node-tutorials' fse.ensureDir(dir);

Conclusion