Features of TypeScript

There are various features of TypeScript which are given below:

Object-Oriented language: TypeScript provides complete features of an object-oriented programming language, such as classes, interfaces, inheritance, modules, etc. In TypeScript, we can write code for both client-side and server-side development.

TypeScript supports JavaScript libraries: It allows the developers to use existing JavaScript code with TypeScript. Here, we can utillize all of the JavaScript frameworks, tools, and other libraries easily.

TypeScript is portable: TypeScript is portable because after compiling it into JavaScript, it can be executed on any browser, device or operating system. It can run in any environment. It is not specific to any virtual machine for execution.

DOM Manipulation: TypeScript can be utilized to manipulate the DOM for adding or removing elements, similar to JavaScript.

Robust Static Typing: A robust static type checking is provided by TypeScript which permits us to catch type-related errors at compile time rather than runtime. It helps developers write more reliable code and allows them to catch errors in the development process.

Compilation: The feature of error checking is provided by the TypeScript compiler. It will generate a compilation error which will highlight the error before runtime.

Support Type Definitions: The type definition for existing JavaScript libraries is supported by TypeScript. The .d.ts extension defines types for external JavaScript libraries.

Code Readability in TypeScript: The class and interfaces are used to write code in TypeScript which makes the code organized therefore it becomes very easy to maintain and debug code in TypeScript.

Code completion: The code completion in the tsc or in the IDE is provided by TypeScript which helps users to write code efficiently. In the IDE, users can flag errors when typing the code which saves time and helps users find out the errors and resolve them easily.

Interfaces: In TypeScript, interfaces serve as a blueprint for a class, but they do not contain executable code. It is a way to define the shape of an object which helps us to ensure that code works as expected. Interfaces describe the shape of an object and we can utilize them to ensure that an object adheres to a certain structure.

Classes: The TypeScript classes are similar to the classes of other object-oriented programming languages like C# and Java. For the particular type of object, we can define properties and methods and inheritance and encapsulation are supported by TypeScript.

Enums: A set of named constants is defined by the enums. They are very helpful in making our code readable by providing names to values.

Generics: It allows us to write reusable code that works with different types. We can create functions, classes and interfaces that can work with any type rather than being tied to a specific type.

Union Type: It helps us to specify that a variable can have one of several possible types. It is very helpful when we are working with data that could be of more than one type.

Type Guards: It is a feature of TypeScript that is useful to get information about the type of a variable within a block of code. Some built-in operators of JavaScript are utilized by TypeScript to decide if an object contains a property. These in-built operators are typeOf operator, instanceOf operator, in operator, etc. It facilitates us to write code that intersects with variables of different types in a type-safe way.

Optional Chaining: In TypeScript, the optional chaining helps us to access nested properties safely. We do not need to worry about the null or undefined values. The optional chaining is very useful when we are working with data that may be incomplete. It helps prevent runtime errors.

Decorators: We utilized decorators to add metadata to classes and their members. By making use of it, we can add additional functionality to our code in a way that the original code will not be modified.

Mapped Types: It is one of the essential features of TypeScript which is utilized to create one type based on another type. In Mapped types, we can convert the variable of one type to another type by applying transformations to its individual properties.

Tuples in TypeScript: In TypeScript, a tuple is a data type that is one of the most commonly used features of TypeScript. In a tuple, we can store any number of elements that have different data types. The two basic methods for tuples are the push() method and the pop() method. We utilize the push() method when we want to append an item to a tuple and pop() is utilized when we want to remove the last element from a tuple.

Shapes in TypeScript: The shapes in TypeScript work similarly to TypeScript interfaces. In TypeScript, if two objects contain the same members, properties and methods then those two objects are treated as the same type.