The account manager of a fictional client company needs to view reports on how employees are making phone calls and using mobile data. The candidate must provide a user interface to the API to allow the account manager to view:

• Available reports.
• Available data for each report for the specified billing period.

• yarn
• yarn dev
• yarn run test
• yarn build

Feel free to come up with your own, but please notice code quality and technical aspects are way more relevant than design.

API responses can be found in the /api directory.

• /api/reports.json contains a list of available reports.
• /api/reports/{reportId}-{billingPeriod}.json contains data for the report id reportId over the billing period billingPeriod.

• I want to see a list of available reports.
• I want to be able to sort the report list by name and description.

• For each report, I want to see:
• The report's name,
• The report's description,
• A button to navigate to the report result table.

• I want to be able to specify over which billing period a report is run.

• I want to see results of the report in a table.
• I want the results of the report to be formatted in a usable manner.
• I want to be able to sort the results by each column.
• The table's columns are defined in the report data JSON.
• When I click on the "Close" button, I want to navigate back to the report list.
• If the API response is not found, malformed or incomplete, I want to be informed accordingly.

Consider best practices, usability and error handling matters.