text: function assertEqual(expected, actual) {
      process.stdout.write("AssertEquals; Expected: " + typeof(expected) + "(" + expected + "), Actual: " + typeof(actual) + "(" + actual + ")");
      if (expected === actual) {  // :Strict equality:
          console.log("  [True]");
      } else {
          console.log("  [False]");
      }
  }
  
  // --------------------------------------
  // Objects
  // --------------------------------------
  // Exercise 1 - Retrieve value from object by key
  console.log("\n--------------------------------- Exercise 1. ----------------------------------");
  console.log("(Retrieve value from object by key. Log the message.)");
  
  const alienMessage = {
  	message: "Hello, earthling! I bring peace."
  };
  
  // Log the message 
  
  const value = alienMessage["message"];
  
  assertEqual("Hello, earthling! I bring peace.", value);
  
  // --------------------------------------
  // Exercise 2 - Defining an object.
  console.log("\n--------------------------------- Exercise 2. ----------------------------------");
  console.log("(Defining an object. Create an object that has your name and age. )");
  // Create an object that has your name and age. 
  
  const me = {
  	name: "Patrick Vincent Højstrøm",
  	age: "29"
  };
  
  assertEqual("Patrick Vincent Højstrøm", me["name"])
  assertEqual("29", me["age"])
  
  // --------------------------------------
  // Exercise 3 - Add a property
  console.log("\n--------------------------------- Exercise 3. ----------------------------------");
  console.log("(Add a property. make a rule called isAllowed and let the value be true.)");
  
  const stackOverflow = {};
  
  // make a rule called isAllowed and let the value be true
  
  stackOverflow["isAllowed"] = true
  assertEqual(true, stackOverflow["isAllowed"])
  
  // --------------------------------------
  // Exercise 4 - Remove a property
  console.log("\n--------------------------------- Exercise 4. ----------------------------------");
  console.log("(Remove a property. remove the property 'description' and add a property called 'about' that should say 'Just a tribute'.)");
  
  const thisSong = {
  	description: "The best song in the world."
  }
  
  // remove the property "description" and add a property called "about" that should say "Just a tribute"
  
  delete thisSong["description"] 
  thisSong["about"] = "Just a tribute"
  
  assertEqual("Just a tribute", thisSong["about"])
  assertEqual(undefined, thisSong["description"])
  