Is it possible to read a pdf file in a serverless function?

Question

I would like to parse a pdf file uploaded on the frontend with a serverless function.

It works locally with a nextjs api route and multer. But will it work in production? Multer basically copies the file on the server and then allows the node script to access it. Even if I delete it just after the parsing operation with fs.unlinkSync(), I'm not sure that it will work with Netlify or Vercel's serverless functions.

my code is:

import { NextApiRequest, NextApiResponse } from "next";
import nc from "next-connect";
import multer from "multer";
import path from "path";
import pdfParser from "pdf-parse";
import fs from "fs";

export const config = {
  api: {
    bodyParser: false,
  },
};

const handler = nc({
  onError: (err: Error, _: NextApiRequest, res: NextApiResponse) => {
    console.error(err);
    res.status(500).end("bad time");
  },
  onNoMatch: (_: NextApiRequest, res: NextApiResponse) => {
    res.status(404).end("page not found");
  },
});

const storage = multer.diskStorage({
  destination: (
    _,
    __,
    cb: (error: Error | null, destination: string) => void
  ) => cb(null, path.join(process.cwd(), "public", "uploads")),
  filename: (
    _,
    file: Express.Multer.File,
    cb: (error: Error | null, filename: string) => void
  ) => cb(null, file.originalname),
});

const upload = multer({ storage });

const uploadFile = upload.single("pdfFile");

handler.use(uploadFile);

handler.post(async (req: any, res: NextApiResponse<any>) => {
  const pdffile = fs.readFileSync(req.file.path);
  const pdfData = await pdfParser(pdffile, { version: "v2.0.550" });
  fs.unlinkSync(req.file.path);
  res.status(200).json({ data: pdfData });
});

export default handler;

Could anyone confirm to me that it will work? Or is it necessary that I pay for a dedicated server too? It would be a bummer because it's only for a 20 lines nodejs script.