The stats.isFIFO() method is an inbuilt application programming interface of the fs.Stats class which is used to check whether fs.Stats object describes a first-in-first-out (FIFO) pipe or not.
Syntax:
stats.isFIFO();
Parameters: This method does not accept any parameter.
Return Value: This method returns a boolean value, which is true if fs.Stats object describes a first-in-first-out (FIFO) pipe, false otherwise.
Below examples illustrate the use of stats.isFIFO() method in Node.js:
Example 1:
// Node.js program to demonstrate the // stats.isFIFO() Method // Accessing fs module const fs = require('fs');
// Calling isFIFO() method from // fs.Stats class fs.lstat('./filename.txt', (err, stats) => {
if (err) throw err;
// console.log(`stats: ${JSON.stringify(stats)}`);
console.log(stats.isFIFO());
if (stats.isFIFO()) {
console.log("fs.Stats describes a "
+ "first-in-first-out (FIFO) pipe.");
} else {
console.log("fs.Stats does not describe a"
+ " first-in-first-out (FIFO) pipe.");
}
}); fs.stat('./', (err, stats) => {
if (err) throw err;
//console.log(`stats: ${JSON.stringify(stats)}`);
console.log(stats.isFIFO());
if (stats.isFIFO()) {
console.log("fs.Stats describes a "
+ "first-in-first-out (FIFO) pipe.");
} else {
console.log("fs.Stats does not describe a "
+ "first-in-first-out (FIFO) pipe.");
}
}); |
Output:
false fs.Stats does not describe a a first-in-first-out (FIFO) pipe. false fs.Stats does not describe a a first-in-first-out (FIFO) pipe.
Example 2:
// Node.js program to demonstrate the // stats.isFIFO() Method // Accessing fs module const fs = require('fs').promises;
// Calling isFIFO() method from // fs.Stats class (async () => { const stat = await fs.lstat('./');
console.log(stat.isFIFO());
})().catch(console.error)
|
Output:
false
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_isfifo