plugin.js

import express from 'express';
const assets = express.static(process.env.PUBLIC_FILE_UPLOAD_DIR || 'public');
const configureServer = (server) => {
  server.middlewares.use(assets);
};
export const myVitePlugin = () => ({
    name: 'my-vite-plugin',
    configureServer,
    configurePreviewServer: configureServer
});