JAVASCRIPT

fs dir exists

import fs from 'fs'

if (fs.existsSync(path)) {
    // Do something
}

how to check if a folder exists in node js

const fs = require("fs")

fs.access("./directory-name", function(error) {
  if (error) {
    console.log("Directory does not exist.")
  } else {
    console.log("Directory exists.")
  }
})

Node Folder or file exists

const { exists } = require("fs");  
var fs = require( 'fs' ),
    path = require( 'path' ),
    expect = require( 'expect' ),

  exists(path.join(__dirname, "
ode_modules.bin"), (e) => {
    console.log(e ? "
ode_modules.bin exists" : "
Install missing packages
");
  });