simple HTTP post logger with UA based client identification

servlog.js

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

const uas = {
  index: [],
  get(ua) {
    let id = this.index.indexOf(ua);
    if (id < 0) {
      id = this.index.length;
      this.index.push(ua);
      console.log('-\nnew UA:', id, ua, '\n-');
    }
    return id;
  },
};

const app = express();
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use((req, res) => {
  const ua = uas.get(req.get('User-Agent'));
  console.log(ua, req.body);
  res.end();
});

app.listen(8383);