text: const { get } = require("http");
  const { pipeline } = require("stream");
  const concat = require("concat-stream");
  const async = require("async");
  
  async.series(
    {
      requestOne: function (done) {
        fetchURL(process.argv[2], done);
      },
      requestTwo: function (done) {
        fetchURL(process.argv[3], done);
      },
    },
    function (err, results) {
      if (err) return console.error(err);
      console.log(results);
    }
  );
  
  function fetchURL(url, callback) {
    get(url, (res) => {
      res.setEncoding("utf-8");
      pipeline(
        res,
        concat((data) => {
          callback(null, data);
        }),
        (err) => {
          if (err) return callback(err);
        }
      );
    });
  }
  