//using Node.js
//npm i @types/node
import * as fs from 'fs'

//Asynchronously:
let path = './data'
fs.mkdir(path, (err) => {
    if (err) 
        console.log("Error:", err)
    else
        console.log('successfully created!')
})

//Synchronously:
let backupPath = './backup'
if (!fs.existsSync(backupPath)){
    fs.mkdirSync(backupPath)
}