Description: Declaration merging in TypeScript is a feature that allows combining multiple declarations into a single definition. This translates into greater flexibility and clarity in the code, as developers can group related types, interfaces, and other elements into a single declaration. This functionality is especially useful in the context of programming, where code organization and readability are paramount. By allowing multiple declarations to merge, TypeScript facilitates the creation of complex types and code reuse, which in turn improves the maintainability and scalability of applications. Declaration merging also helps avoid code duplication and maintain a cleaner and more coherent structure in projects, which is essential in collaborative development environments. In summary, this feature not only optimizes code writing but also promotes better practices in software development, making TypeScript a powerful tool for modern developers.