This documentation provides an overview of the useSearch hook, which implements a reusable search functionality to filter a dataset based on user input.

The useSearch hook:

1. Maintains a search term state.
2. Filters a dataset based on the search term.
3. Returns the search term, its setter, and the filtered dataset.

• Manages the search term entered by the user.

1. State Variable:

   • search: Stores the current search term.

2. Code Snippet:

   const [search, setSearch] = useState<string>('');

3. Process:

   • The setSearch function is used to update the search term dynamically.

• Filters the input dataset based on the current search term.

1. Functionality:

   • Converts the search term and item names to lowercase for a case-insensitive match.
   • Filters the dataset by checking if each item's name includes the search term.

2. Code Snippet:

   const filteredData = data.filter((item) =>
     item.name.toLowerCase().includes(search.toLowerCase())
   );

3. Process:

   • Iterates through the data array to filter items.
   • Updates the filteredData array dynamically as the search term changes.

• Ensures reusability across datasets with different types, as long as the items include a name field.

1. Generic Type:

   • T represents the type of each item in the dataset.
   • Extends { name: string } to ensure items have a name field.

2. Code Snippet:

   const useSearch = <T extends { name: string }>(data: T[]): UseSearch<T> => { ... };

3. Benefits:

   • Provides compile-time type checking.
   • Ensures the hook works with various data structures that include a name field.

const items = [
  { name: 'Apple', category: 'Fruit' },
  { name: 'Banana', category: 'Fruit' },
  { name: 'Carrot', category: 'Vegetable' },
];

import useSearch from './hooks/useSearch';

const App = () => {
  const { search, setSearch, filteredData } = useSearch(items);

  return (
    <div>
      <input
        type="text"
        value={search}
        onChange={(e) => setSearch(e.target.value)}
        placeholder="Search items..."
      />
      <ul>
        {filteredData.map((item, index) => (
          <li key={index}>{item.name}</li>
        ))}
      </ul>
    </div>
  );
};

• Empty Search Term:

  • If the search term is empty, the filteredData array returns the original dataset.

• Case Insensitivity:

  • Converts both search term and item names to lowercase to handle case differences.

• The hook is generic and can be reused for any dataset that contains a name field, regardless of additional properties.

• For large datasets, consider optimizing filtering logic or implementing debounce to improve performance.

For additional customization, refer to the React Documentation.