Node.js fs.Dirent.isFile() Method
The fs.Dirent.isFile() method is an inbuilt application programming interface of class fs.Dirent within File System module which is used to check if the particular dirent describes a File or not.
Syntax:
const dirent.isFile()
Parameter: This method does not accept any parameter.
Return Value: This method returns true if the particular dirent describes a File otherwise false.
Below programs illustrates the use of fs.dirent.isFile() method in node.js:
Example 1:
Filename: index.js
javascript
// Node.js program to demonstrate the // dirent.isFile() method const fs = require( 'fs' ); // Initiating async function async function stop(path) { // Creating and initiating File's // underlying resource handle const dir = await fs.promises.opendir(path); // Synchronously reading the File's // underlying resource handle // using readSync() method for ( var i = 0; i <= 3; i ++ ) { // Checking if the particular dirent is // File or not by using isFile() method const value = (dir.readSync()).isFile(); // Display the result console.log(dir.readSync()); console.log(value); } } // Catching error stop( './' ). catch (console.error); |
Run index.js file using the following command:
node index.js
Output:
Dirent { name: 'cert.cer', [Symbol(type)]: 1 } true Dirent { name: 'certificate1.cer', [Symbol(type)]: 1 } true Dirent { name: 'filename.txt', [Symbol(type)]: 1 } false Dirent { name: 'GFG.java', [Symbol(type)]: 1 } true
Example 2:
Filename: index.js
javascript
// Node.js program to demonstrate the // dirent.isFile() 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 File's // underlying resource handle // using readSync() method for ( var i = 0; i <= 3; i ++ ) { // Checking if the particular dirent // is File or not by using isFile() method const value = (dir.readSync()).isFile(); // Display the result console.log(dir.readSync()); console.log(value); } } 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); |
Run index.js file using the following command:
node index.js
Output:
Dirent { name: 'cert.cer', [Symbol(type)]: 1 } true Dirent { name: 'certificate1.cer', [Symbol(type)]: 1 } true Dirent { name: 'features', [Symbol(type)]: 2 } true Dirent { name: 'GFG.class', [Symbol(type)]: 1 } true dir is closed successfully
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/fs.html#fs_dirent_isfile