text: // files ko read karke print karna hai
  
  let fs = require("fs");
  // syntax sugar 
  console.log("before");
  // async is keyword 
  (async function fn() {
      
      try {
          let ffReadPromise = fs.promises.readFile("f1.txt");
          let content = await ffReadPromise; //await kiya to yeh sidha data lake de dega aur hum usko content mai store kr rhe hai
          console.log("content" + content);
          let SfReadPromise = fs.promises.readFile("f2.txt"); //12 and 13 line yeh hai cb1 ka code (cb1 of A5. PromiseAsyncSerial.js file)
          content = await SfReadPromise;
          console.log("content" + content);
          let thfReadPromise = fs.promises.readFile("f3.txt"); // line 15 and 16 hai cb2 ka code
          content = await thfReadPromise;
          console.log("content" + content);
      } catch (err) {
          console.log("err", err);
      }
  
  })();
  console.log("after");
  
  //yaha kam same hi hai bas likhne ka easy tarika hai
  //then and catch ka alternative hai yeh
  