text: const fs = require("fs");
  
  const init = Date.now();
  console.time("readFile");
  
  for (let x = 0; x < 4; x++) {
    const start = Date.now();
    fs.readFile("./1GB.bin", (err, data) => {
      const end = Date.now();
      if (err) throw err;
      console.log(
        `File size#${x}: ${Math.round(data.length / 1e6)} MB from ${
          start - init
        } to ${end - init} in ${end - start}`
      );
    });
  }
  
  fs.readFile("./file.txt", "utf-8", (err, data) => {
    if (err) throw err;
    console.log("file.txt data: ", data.trim());
  });
  
  console.timeEnd("readFile");
  