Description: The keyword ‘extends’ in TypeScript is used to create a subclass from a parent class, allowing for the inheritance of properties and methods. This feature is fundamental in object-oriented programming, as it enables developers to build class hierarchies that share common behaviors and attributes. By using ‘extends’, a child class can access the public and protected members of its parent class, promoting code reuse and structured organization of applications. Additionally, TypeScript, being a superset of JavaScript, allows developers to leverage inheritance features in a more robust and typed manner, helping to prevent errors at compile time. The ‘extends’ keyword not only facilitates the creation of relationships between classes but also enables the implementation of polymorphism, where a child class can redefine methods from the parent class, tailoring them to its specific needs. In summary, ‘extends’ is a powerful tool that enhances the modularity and maintainability of code in applications developed using TypeScript.
