fix modules

Author: hnasr

00-eventloop/001-event-loop-multiple-example.js

@@ -2,24 +2,19 @@ import fs from "node:fs"
 const x = 1;
 const y = 2;
 const z = x + y;
-fs.readFile ("a.txt", 
-    //readFile a
-    () => 
-    { 
+function timer1Callback() { console.log("timeout elapsed 1ms")}
+function timer2Callback() {fs.readFile ("c.txt", readFileCCallback)}
+function readFileCCallback() {console.log("read c after a second")}
+function writeFileBCallback() {
+        //setTimeout 1000ms
+        console.log("write b.txt");
+        setTimeout( timer2Callback,1000);
+}
+function readFileACallback() {
         //writeFile b
         console.log("read a.txt");
-        fs.writeFile("b.txt", "test", () => {
-            //setTimeout 1000ms
-            console.log("write b.txt");
-            setTimeout( ()=> {
-                fs.readFile ("c.txt", 
-                            //read file c
-                            () => console.log("read c after a second")
-                        );
-            },1000);
-        });
-    });
-    
-
+        fs.writeFile("b.txt", "test", writeFileBCallback);
+}
+fs.readFile ("a.txt", readFileACallback);
 //setTimeout 1ms
-setTimeout( () => console.log("timeout elapsed 1ms"), 1);
+setTimeout(timer1Callback, 1);

01-main-module/010-a.js

@@ -1,4 +1,5 @@
-require ("/Users/HusseinNasser/projects/node-course-content/01-main-module/010-b.js")
+//. means from the point of the current __filename
+require ("./b.js") 
 console.log("loading module a")
 
 for (let i = 0; i < 100000000; i ++);

01-main-module/010-b.js renamed to 01-main-module/b.js

@@ -0,0 +1 @@
+test