Node.js stats.size Property from fs.Stats Class

Last Updated : 26 Jun, 2020
The stats.size property is an inbuilt application programming interface of the fs.Stats class is used to get the size of the file in bytes. Syntax: 
stats.size;
Return Value: It returns a number or BigInt value that represents the size of the file in bytes. Below examples illustrate the use of stats.size property in Node.js: Example 1: javascript 
// Node.js program to demonstrate the   
// stats.size property

// Accessing fs module
const fs = require('fs');

// Calling fs.Stats stats.size
// for files using stat
fs.stat('./filename.txt', (err, stats) => {
  if (err) throw err;
  console.log("using stat: the size the "
    + "file in bytes is " + stats.size);
});
 
// Using lstat
fs.lstat('./filename.txt', (err, stats) => {
  if (err) throw err;
  console.log("using lstat: the size the"
    + " file in bytes is " + stats.size);
});
Output: 
using stat: the size the file in bytes is 1112
using lstat: the size the file in bytes is 1112
Example 2: javascript 
// Node.js program to demonstrate the   
// stats.size property

// Accessing fs module
const fs = require('fs').promises;

// Calling fs.Stats stats.size
(async () => {
    const stats = await fs.stat('./filename.txt');
    console.log("using stat synchronous: the size "
        + "the file in bytes is " + stats.size);
})().catch(console.error)
Output: 
(node:7040) ExperimentalWarning: The fs.promises API 
is experimental 
using stat synchronous: the size the file 
in bytes is 1112
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_size
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