Renaming all files inside a folder (MacOS) using NodeJS

fileRename.js

'use strict'

const Fs = require('fs')
const Path = require('path')
const filePath = process.env.filePath

if (!filePath) {
	throw Error ('Please set filePath!')
}

const getRandomStr =  () => Math.random().toString(36).substring(2, 30) + Math.random().toString(36).substring(2, 30);
const getExtension = (fileName) => Path.extname(fileName)

Fs.readdirSync(filePath).forEach(file => {
  
  const currentFile = `${filePath}/${file}`
  const newFile = `${filePath}/${getRandomStr()}${getExtension(file)}`
  Fs.renameSync(currentFile, newFile);
	
});