rewrite-filename.js

var fs = require('fs')
var path = require('path');
var imagePath = path.resolve(process.cwd(), 'assets/images')
console.log("starting script")
fs.readdir(imagePath, ((err, files) => {
  files.filter(file => file.includes('@')).forEach((file) => {
    var fileSplit = file.split('@')
    var newImagePath = path.resolve(imagePath, fileSplit[0] + '.png')
    var oldImagepath = path.resolve(imagePath, file)
    fs.rename(oldImagepath, newImagePath, (err) => {
      if(err) {
        console.log(err)
      }
    })
  })
}))