multy-stub/server/routers/pen-plotter/index.js

const express = require('express')
const router = express.Router()
const fs = require("fs");
const path = require("path");

const BASE_PATH = __dirname;
const STATIC_PATH = `${BASE_PATH}/static`;
// Serve static files
router.use(express.static(path.join(__dirname, './assets/')))
// Add the required directories
router.use((req, res, next) => {
  const directories = ['/static', '/profiles']
  directories.forEach((dir) => {
    if (!fs.existsSync(BASE_PATH + dir)) {
      fs.mkdirSync(BASE_PATH + dir)
    }
  })
  next()
})
// Serve Static generated SVGs
router.get('/static/:name', async (req, res, next) => {
  const fileName = req.params.name
  const filePath = `${STATIC_PATH}/${fileName}`

  const file = await fs.readFileSync(filePath)
  res.setHeader('Content-Type', 'image/svg+xml')
  res.send(file)
})

router.use('/api', require('./routes/api').default)

router.get('/info', (req, res) => {
  res.send('Pen-Plotter backend')
})

module.exports = router