very-useufull-service

main.js

const express = require('express');
const fs = require('fs');

const app = express();

app.get('/version', (req, res) => {
    let version = JSON.parse(fs.readFileSync('version.json'));
    res.json(version);
});

app.listen(80, () => {});

package.json

{
  "name": "very-usefull-service",
  "version": "1.0.0",
  "main": "main.js",
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.17.1"
  }
}

version.json

{"version": "0.1"}