Why does my JavaScript promise chain return undefined despite having a return statement? [closed]

 function fetchData() {
return fetch('https://api.example.com/data') // Replace with a real API endpoint
    .then(response => {
        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }
        return response.json(); // Parse the JSON data
    })
    .then(processedData => {
        console.log("Processed Data:", processedData);
        return processedData; // Return the processed data
    })
    .catch(error => {
        console.error("An error occurred:", error);
        throw error; // Propagate the error
    });

}
Function Documentation:
Added a function-level comment to explain its purpose and return type. This makes it easier for other developers to understand the function.

Error Handling:

Used if (!response.ok) to explicitly check for HTTP response status errors (e.g., 404, 500).
Added a descriptive error message using throw new Error().
Data Transformation:
In the second .then() block, data is processed further, such as extracting important fields and adding a timestamp. This is a common use case for APIs that return large JSON objects.

Comments for Clarity:
Inline comments explain what each part of the code does. This helps make the code easier to follow for beginners.

Reusable Design:
By returning a Promise, this function can be reused in other parts of your application for API requests.

Error Propagation:
Errors are logged and re-thrown so the calling code can handle them. This ensures robust error handling at every level.