Resize images from current folder with transliterate to output folder

resize.js

// script that resize
// npm install -g sharp
// npm install -g cyrillic-to-translit-js

const targetWidth = 900; // null - if need to fit size by height
const targetHeight = null; // null - if need to fit size by width
const targetFolder = 'output';
const withTransparentTrim = true;


const targetDir = `./${targetFolder}-${targetWidth}x${targetHeight}`;
const formats = ['jpg','png','jpeg'];

const sharp = requireGlobal('sharp');
const translit = requireGlobal('cyrillic-to-translit-js');
const fs = require('fs');
if (!fs.existsSync(targetDir)){
    fs.mkdirSync(targetDir);
}

const files = fs.readdirSync('./', {withFileTypes: true})
.filter(item => !item.isDirectory())
.map(item => item.name);

files.forEach(file => {
	if (formats.some(format => file.includes(format))){
		console.log('process ' + file);
		let buffer = sharp(file)
		.resize(targetWidth, targetHeight);
		
		if (withTransparentTrim) {
			buffer = buffer.trim();
		}
		
		buffer.toFile(`${targetDir}/${translit().transform(file, "_")}`, (err, info) => { 
			if (err) {
				console.log(err);
			} else {
				console.log(info);
			}
		 });
	}	
});

function requireGlobal(packageName) {
  var childProcess = require('child_process');
  var path = require('path');
  const fs = require('fs');

  var globalNodeModules = childProcess.execSync('npm root -g').toString().trim();
  var packageDir = path.join(globalNodeModules, packageName);
  if (!fs.existsSync(packageDir))
    packageDir = path.join(globalNodeModules, 'npm/node_modules', packageName); //find package required by old npm

	console.log(packageDir);

  if (!fs.existsSync(packageDir))
    throw new Error('Cannot find global module \'' + packageName + '\'');

  var packageMeta = JSON.parse(fs.readFileSync(path.join(packageDir, 'package.json')).toString());
  var main = path.join(packageDir, packageMeta.main);

  return require(main);
}