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
// Node.js program to demonstrate the // dir.readSync() 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);
// Synchronously reading the directory's
// underlying resource handle
const dirent = dir.readSync();
// Display the result
console.log(dirent.name);
} // Catching error stop( './' ). catch (console.error);
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Run index.js file using the following command:
node index.js
Output:
abcd.cer
Example 2:
Filename: index.js
// Node.js program to demonstrate the // dir.readSync() method const fs = require( 'fs' );
// Initiating async function async 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 error stop('./'). catch (console.error);
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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