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
// 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);
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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
// 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);
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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