node / formidable - problem with documentation - how to save files to dir?

[robokonk]

I 'am a newbie programmer. Today I want to install and configuration formidable for my project. https://www.npmjs.com/package/formidable I have question:

where I find information about how to save files to dir? I see on npmjs example code with express.js, but in this code not include information about save, documentation also not included information about save files to dir.

How I should read that documentation like this? I will be grateful for any comments, probably at the moment I don't think like programmer.

[wbt]

First, welcome to programming!
StackOverflow may be a better place for usage questions like this, though even there they'll probably want to see a more specific question.
In the interim I'd recommend checking out the documentation for Node's file system module, as well as the readme for this project. The first example in the readme shows how to save a file uploaded with an HTML form. There are other examples around online about how to save files (which might not come from an HTML form upload) more generally using Node's fs module.

[tunnckoCore]

@robokonk with passing { uploadDir: './your-upload-folder'}. You can use Formidable with just Node's builtin http module.

[nagayev]

You can use code like this (code from my NextJS app):

const post = async (req, res) => {
  const form = new formidable.IncomingForm(); 
  form.parse(req, async function (err, fields, files) {
    try{
      await saveFile(files.file);
    }
    catch(e){
      console.log('Error: ',e);
    }
    return res.status(201).send("Nothing");
  });
};

const saveFile = async (file) => {
  const data = fs.readFileSync(file.filepath);
  fs.writeFileSync(`./public/${file.originalFilename}`, data);
  await fs.unlinkSync(file.filepath); 
  return;
};

[wbt]

Note that this code reads the entire contents of the file into memory, and might not be the best solution if you're regularly handling large files.