node.js: fs.rename(oldPath, newPath, callback): Rename the file asynchronously

fs.rename(oldPath, newPath, callback)

This function renames the file asynchronously.

Below table summarizes the arguments of ‘renameSync’ method.

Argument	Type	Description
oldPath	string or Buffer or URL	Current name or path of the file
newPath	string or Buffer or URL	New name or path of the file
Callback	Function	This function takes one argument ‘err’ and it is called when rename call is executed. On failure cases ‘err’ represents the stack trace.

HelloWorld.js

var fs = require('fs');

var oldPath = 'input.txt'; // Assume input.txt file is already exist.
var newPath = 'output.txt';

fs.rename(oldPath, newPath, (error) =>{
 if(error){
  console.log(`Error occured while renaming, ${error}`)
 }else{
  console.log('Renamed successfuly');
 }
})

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