Nodejs Middleware to Log HTTP API-Requests when working with an API without any doc :kappa:

httplogger.js

const http = require("http");

const server = http.createServer((request, response) => {
    const requestStart = Date.now();
  
    let errorMessage = null;
    let body = [];
    request.on("data", chunk => {
      body.push(chunk);
    });
    request.on("end", () => {
      body = Buffer.concat(body);
      body = body.toString();
    });
    request.on("error", error => {
      errorMessage = error.message;
    });
  
    response.on("finish", () => {
      const { rawHeaders, httpVersion, method, socket, url } = request;
      const { remoteAddress, remoteFamily } = socket;
  
      console.log(
        JSON.stringify({
          timestamp: Date.now(),
          processingTime: Date.now() - requestStart,
          rawHeaders,
          body,
          errorMessage,
          httpVersion,
          method,
          remoteAddress,
          remoteFamily,
          url
        })
      );
    });
    
    process(request, response);
});

const process = (request, response) => {
    setTimeout(() => {
        response.end();
    }, 100);
};

server.listen(8888);