Automerge Tutorial Server

package.json

{
  "name": "server",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.19.0",
    "cors": "^2.8.5",
    "express": "^4.17.1",
    "pump": "^3.0.0"
  }
}

server.js

const express = require('express')
const path = require('path')
const fs = require('fs')
const cors = require('cors')
const bodyParser = require('body-parser');

let app = express()
var options = {
	inflate: true,
	limit: '100kb',
	type: 'application/octet-stream'
};
app.use(bodyParser.raw(options));

try { 
	fs.mkdirSync(path.join(__dirname, 'data'))
} catch (err) {
	if (err.code !== 'EEXIST') {
		console.error(err)
	} 
}


app.use(cors())

app.get('/:id', (req, res) => {
	let id = req.params.id
	let filename = path.join(__dirname, 'data', id)
	fs.stat(filename, (err, stats) => {
		if (err) {
			console.error(err)
			res.status(404).send('Not found')
		} else { 
			res.sendFile(filename)
			console.log('sending')
		}
	})
})

app.post('/:id', (req, res) => {
	let id = req.params.id
	fs.writeFileSync(path.join(__dirname, 'data', id), req.body)
	res.status(200).send('ok')
})

const port = 5000

app.listen(5000, () => {
	console.log('listening on http://localhost:' + port)
})