Modularity: The refactoring introduces modularity by splitting the filtering and mapping logic into separate functions. This enhances code organization, making it easier to understand and maintain. The main useSidebarSearch function focuses solely on handling state and side effects.

Descriptive Variable Names: Variable names are updated to be more descriptive, enhancing code readability. Clear and meaningful variable names make it easier for other developers to understand the purpose of each variable.

Type Annotations: TypeScript interfaces are used to provide type safety for the data structures used in the script. Specifically, the SidebarItem interface ensures that the searchResults state and other data structures adhere to the correct structure, avoiding potential type-related errors.

Destructuring: Destructuring is used to simplify the code and avoid repetitive object property access. This reduces verbosity and improves the overall readability of the script.

Error Handling: The script now includes error handling for the API fetch request. If the response from the API is not successful, it throws an error, which provides a clear indication of network issues. The error handling logic can be further extended to handle other types of errors if necessary.

These improvements in code organization, variable naming, type safety, and error handling enhance the overall quality of the useSidebarSearch script. The refactored code becomes more maintainable, extensible, and less prone to errors. Additionally, the use of TypeScript interfaces ensures that data structures are well-defined and consistent, contributing to a more robust and reliable implementation.