Node.js fs.Dir.readSync() Method
The fs.Dir.readSync() method is an inbuilt application programming interface of class fs.Dir within File System module which is used to read each next dirent of directory.
Syntax:
const dir.readSync()
Parameter: This method does not accept any parameter.
Return Value: This method returns the dirent of the directory.
Below programs illustrates the use of fs.Dir.readSync() method in Node.js:
Example 1:
Filename: index.js
javascript
// Node.js program to demonstrate the // dir.readSync() methodconst fs = require('fs');// Initiating async functionasync function stop(path) { // Creating and initiating directory's // underlying resource handle const dir = await fs.promises.opendir(path); // Synchronously reading the directory's // underlying resource handle const dirent = dir.readSync(); // Display the result console.log(dirent.name);}// Catching errorstop('./').catch(console.error); |
Run index.js file using the following command:
node index.js
Output:
abcd.cer
Example 2:
Filename: index.js
javascript
// Node.js program to demonstrate the // dir.readSync() methodconst fs = require('fs'); // Initiating async functionasync function stop(path) { let dir = null; try { // Creating and initiating directory's // underlying resource handle dir = await fs.promises.opendir( new URL('file:///F:/java/')); // Synchronously reading the directory's // underlying resource handle // using readSync() method for(var i = 0 ; i <= 3 ; i ++ ) { var dirent = dir.readSync(); // Display the result console.log(dirent.name); } } finally { if (dir) { // Display the result console.log("dir is closed successfully"); // Synchronously closeSyncing the // directory's underlying resource // handle const promise = dir.closeSync() } }} // Catching errorstop('./').catch(console.error); |
Run index.js file using the following command:
node index.js
Output:
abcd.cer cert.cer certfile.cer certificate1.cer dir is closed successfully
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/fs.html#fs_dir_readsync