this-primer.ts

// Function
function myFunction() {
  console.log("Function::", this);
}

myFunction(); // =>  Window is invoking the function

// Lamda
const myanotherFunc = () => console.log("Lamda::", this);

myanotherFunc();

// Object literal
const myObj = {
  myMethod() {
    console.log("Object::", this);
  },
};

myObj.myMethod(); // => myObj is invoiking the function

// Classes
class MyClass {
  myMethod() {
    console.log("Class::", this);
  }
}

const myInstance = new MyClass();
myInstance.myMethod(); // => myInstance is invoking the function