Simple node script to bulk rename files and folders from "123 DD-MM-YYY Long title" to "YYYY-MM-DD Long title"

rename-items.js

// 123 DD-MM-YYY Long title -> YYYY-MM-DD Long title

const path = require('path')
const fs = require('fs')

const parentDir = path.resolve('RESOLVABLE_PATH')
const type = 'FILE' // FOLDER or FILE

const entities = fs.readdirSync(parentDir, { withFileTypes: true })
  .filter(dirent => type == 'FOLDER' ? dirent.isDirectory() : dirent.isFile())
  .map(dirent => dirent.name)

for (const ent of entities) {

  const { name, ext } = path.parse(ent)
  const words = name.split(' ')

  console.log(ent);

  if (words[0].length !== 3)
    continue

  const title = words.slice(2).join(' ')
  const [DD, MM, YYYY] = words[1].split('-')

  let newName = `${YYYY}-${MM}-${DD} ${title}`.trim()
  if (ext) newName += ext

  console.log(newName)

  const oldPath = path.join(parentDir, ent)
  const newPath = path.join(parentDir, newName)

  fs.renameSync(oldPath, newPath)
}