Typescript is an open-source language similar to javascript with more advanced features.

It provides type safety for JavaScript code during the compilation phase.

Typescript files created with the ts extension, that compiled to javascript(.js extension)

Typescript = Superset of Javascript + Optional Type Safety Checking.

Why Typescript is preferred over Javascript

Typescript provides the following features

Typescript features

Typescript Primitive Types Any data in typescript is typed at compiled time. The following are types.

Type	Description
any	any type accepts any value, equals to javascript variable declaration
unknown	data type is not known at
boolean	boolean contains true or false values
number	numbers contains values of positive, negative, and float values
bigint	BigInteger to represents larger integers to avoid rounding errors
string	Represents Group of characters
symbol	used to define keys in objects and maps
Objects	Objects are basic entities created using typed aliases, interface, and classes
Arrays	Datastructures to represent a sequence of objects of the same type
Enum	Enumeration of fixed key and values
Type aliases	used to declare typed aliases for custom types
Unions	Represents union of types
Tuple	Represents an array of multiple types
never	Type that never returns any value from a function
void	Type represents functions that do not return any value

Feature	Description
Primitive Types	Typescript Inbuilt Primitive Types
Compiler	Typescript compiler, convert to Javascript
Handle Errors	Error handling using try, catch, throw.
horizontalPosition	Horizontal position - ‘start’, ‘center’, ’end’, ’left’, ‘right’
Classes	Object Oriented Classes
Polymorphism	functions overloading and overriding
Encapsulation	Setter and getter to provide abstraction and protection data
Interface & Abstract	Define interface and abstract classes
Modules	Import and export modules

The current Latest version is 4.8.3.

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