Express-fileupload tiene una función que permite mover el archivo .mv(), lo que busco es esperar a que termine para poder continuar con la siguiente tarea.

NPM: https://www.npmjs.com/package/express-fileupload

CÓDIGO

 console.log("Starting the loop") for (const element of _sources) { const file = req.files[element]; if (file !== undefined) { const _mime = mimesList.filter((v) => v.mimetype === file.mimetype); if (_mime.length === 0) { //... exec } else { console.log("Start moving the file") const previewPath = _path + new tokenGenerator().generate() + element + _mime[0].extension; await file.mv(previewPath, function (err) { if (err) { //!make error } req.files[element].preview = previewPath; console.log("No errors") }); console.log("I have finished moving the file.") } } else { //.. exec } } console.log("Ending the loop")

salida de corriente

 Starting the loop Start moving the file I have finished moving the file. Start moving the file I have finished moving the file. Start moving the file I have finished moving the file. Ending the loop No errors No errors No errors

Rendimiento esperado

 Starting the loop Start moving the file No errors I have finished moving the file. Start moving the file No errors I have finished moving the file. Start moving the file No errors I have finished moving the file. Ending the loop