Node.js fs.Dirent.isBlockDevice() Method

The fs.Dirent.isBlockDevice() 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 block device or not.

Syntax: 

const dirent.isBlockDevice()

Parameters: This method does not accept any parameter.

Return Value: This method returns true if the particular dirent describes the block device otherwise false.

Example 1: The below program illustrates the use of fs.dirent.isBlockDevice() method in Node.js:

Filename: index.js 

Run the index.js file using the following command: 

node index.js

Output: 

Dirent { name: 'cert.cer', [Symbol(type)]: 1 }
false
Dirent { name: 'certificate1.cer', [Symbol(type)]: 1 }
false
Dirent { name: 'filename.txt', [Symbol(type)]: 1 }
false
Dirent { name: 'GFG.java', [Symbol(type)]: 1 }
false

Example 2: The below program illustrates the use of fs.dirent.isBlockDevice() method in Node.js:

Filename: index.js 

Run the index.js file using the following command: 

node index.js

Output: 

Dirent { name: 'adonis_auth_api', [Symbol(type)]: 2 }
false
Dirent { name: 'Android Template', [Symbol(type)]: 2 }
false
Dirent { name: 'Calendar', [Symbol(type)]: 2 }
false
Dirent { name: 'first-app', [Symbol(type)]: 2 }
false

Note: The above program will not run on online JavaScript and script editor.

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