Notes

Interfaces

General straregy for reusable code in TS is create function with arguments that are typed with interfaces.
Object/Classes can decide to implement a given interface to work with a function.
Typescript automatically tries to figure out what type of value a variable refers to
Interfaces also can be extend from other interfaces.
Interfaces describes functions, arrays, objects.
Interfaces can also extentiate class.

Classes

Class is a blueprint to create an object with some fields and methods to represent a thing
Classes has controls over who can see methods and variables.
extends inherites all things from class Vehical
default modifier of any method or variables is public.
public can be called everywhere, anytime.
private can be called by other methods in the class.
protected can be called by other methods in current class or other methods of child clsses.

Type aliases

More flexible than interfaces.
It's just allowing the compiler that what values of datatypes are allowed to be in variable.
It'll allow us to give a type name.

Generics

Generics offer a way to create reusable components. Generics provide a way to make components work with any data type and not restrict to one data type. So, components can be called or used with a variety of data types.
these are the types in class/functions.
allow us to defines type of property, argument, return type at future point.
use in resusable of code.

Top & Bottom types

There are two types of Top types.
One is any and second one is unknown.
any has no checks on nodes in object type.
unknown can be use when it's needs to be private.
There is one only type in Bottom types.
never it holds no values.