What is Node.js fs.Dir.closeSync() Method?

In this article, we will learn Node.js fs.Dir.closeSync() Method,This free Node.js tutorial for complete beginners will help you learn Node.js from scratch.

Node.js fs.Dir.closeSync() Method - ❤️Node.js Tutorials In 2024

The fs.Dir.closeSync() method is an inbuilt application programming interface of class fs.Dir within File System module which is used to close the directory’s underlying resource handle synchronously.

Syntax:

const dir.closeSync()

Parameter: This method does not accept any parameter.
Return Value: This method returns an undefined object

Below programs illustrates the use of fs.Dir.closeSync() method.

Example 1:

Filename: index.js

Javascript

// Node.js program to demonstrate the 
// dir.closeSync() method
const fs = require('fs');
  
// Initiating async function
async function stop(path) {
  
  // Creating and initiating directory's 
  // underlying resource handle
  const dir = await fs.promises.opendir(path);
 
  console.log("All the direct before operation :- ");
  for (var i = 0; i <= 6; i++) {
     console.log(((dir.readSync())).name);
  }
    
  // Synchronously closeSyncing the directory's
  // underlying resource handle
  const promise = dir.closeSync();
 
  // Display the result
  console.log("dir is closed successfully");
}
  
// Catching error
stop('./').catch(console.error);

Run index.js file using the following command:

node index.js

Output:

All the direct before operation :-
abcd.cer
books.txt
cert.cer
certfile.cer
certificate1.cer
example.txt
features
dir is closed successfully

Example 2:

Filename: index.js

Javascript

// Node.js program to demonstrate the 
// dir.closeSync() method
const fs = require('fs');
const fsPromises = fs.promises;
 
// Name of the directory to be created
let directo = './temp';
 
// Checking if the directory is present or not
if (!fs.existsSync(directo)){
  fs.mkdirSync(directo);
}
    
// Initiating asynchronous function
async function funct(path) {
      
  // Initializing dir
  let dir = null;
  let pathval = null;
    
  try {
     
   // Creating and initiating directory's
   // underlying resource handle
   dir = await fs.promises.opendir(
      new URL('file:///F:/java/temp'));
 
   console.log("All the direct before operation :- "
                 + ((dir.readSync())));
    
   // Getting the path of the directory
   // by using path() method
   pathval = dir.path;
    
  } finally {
    
    if (dir) {
  
      // Close the file if it is opened.
      console.log("Path :- " + pathval);
 
      console.log("All the direct before operation :- "
                          + ((dir.readSync())));
 
      console.log("dir is closed successfully");
  
      await dir.closeSync();   
    }
  }
}
    
funct('./').catch(console.error);

Run index.js file using the following command:

node index.js

Output:

All the direct before operation:- [object Object]
Path :- F:
All the direct before operation:- [object Object]
dir is closed successfully

Reference: https://nodejs.org/dist/latest-v12.x/docs/api/fs.html#fs_dir_closesync