• 3**-1: Type Assertion**
• 3-2: Interface, Type vs Interface
• 3**-3: Introduction of Generic in Type [means common type]**
• 3**-4: Generic in Interface**
• 3**-5: Generic function**
• 3**-6: Generic Constraints [force to do something]**
• 3**-7: Generic Constraints Using Key Of**
• 3**-8: Asynchronous TypeScript**
• 3**-9: Conditional Type**