Async·medium 18 min 75 XP
Fetch Error Handling
Write safeFetchJSON(fetchImpl, url) that awaits fetchImpl(url), throws if response.ok is false, and otherwise returns the parsed JSON.
Examples
- safeFetchJSON(fetcher, "/user") rejects on a non-ok response
Constraints
- Keep the required function name so the tests can find it
- Return a value instead of only logging it
- Do not mutate inputs unless the challenge asks you to
Fetch Error Handling · editor
Code runs in an isolated Web Worker with a 3-second timeout — no DOM access, and it can never hang the page.