Typescript Developer Interview Questions and Answers

Abstract class is a class that cannot be instantiated and is meant to be inherited by other classes.

• Cannot be instantiated directly

• Can have abstract methods that must be implemented by child classes

• Used to define a common structure for multiple related classes

Void in TypeScript is a data type that represents the absence of a value.

• Void is used as the return type of functions that do not return a value.

• Variables of type void can only be assigned undefined or null.

• Void is often used in callback functions where the return value is not needed.

TypeScript is a superset of JavaScript that adds static typing and other features to improve code quality and developer productivity.

• Static typing for variables and function parameters

• Interfaces for defining object shapes

• Classes and inheritance for object-oriented programming

• Enums for defining named constants

• Generics for writing flexible and reusable code