Node.js stats.isBlockDevice() Method from fs.Stats Class
The stats.isBlockDevice() method is an inbuilt application programming interface of the fs.Stats class which is used to check whether fs.Stats object is of a block device or not.
Syntax:
stats.isBlockDevice();
Parameters: This method does not accept any parameter.
Return Value: This method returns a boolean value, i.e. true if fs.Stats object describes a block device, false otherwise.
Below examples illustrate the use of stats.isBlockDevice() method in Node.js:
Example 1:
// Node.js program to demonstrate the // stats.isBlockDevice() method // Accessing fs module const fs = require('fs'); // Calling fs.Stats isBlockDevice() fs.stat('./filename.txt', (err, stats) => { if (err) throw err; // console.log(`stats: ${JSON.stringify(stats)}`); console.log(stats.isBlockDevice()); }); |
Output:
false
Example 2:
// Node.js program to demonstrate the // stats.isBlockDevice() method // Accessing fs module const fs = require('fs'); // Calling fs.Stats isBlockDevice() method fs.stat('./filename.txt', (err, stats) => { if (err) throw err; // console.log( // `stats: ${JSON.stringify(stats)}`); if (stats.isBlockDevice()) { console.log("fs.Stats describes a " + "block device"); } else { console.log("fs.Stats does not " + "describe a block device"); } }); |
Output:
fs.Stats does not describe a block device
Note: The above program will compile and run by using the node filename.js command and use the file_path correctly.
Reference: https://nodejs.org/api/fs.html#fs_stats_isblockdevice