Errors
Standard HTTP status codes with a small JSON error body.
Error body shape
{ "message": "Could not find currency ABC" }Status codes
| Code | Meaning |
|---|---|
400 |
Invalid parameter or malformed request. |
404 |
Currency, rate, or resource not found. |
422 |
Request understood but cannot be processed. |
Handling errors
Check res.ok (or the status code) before parsing the body as a successful response,
since the shape is different on failure:
const res = await fetch(url);
if (!res.ok) {
const { message } = await res.json();
throw new Error(message);
}
const data = await res.json();