Errors

Every rejection is an Error whose name and kind are one of:

kind	When	Extra fields
HttpError	Non-2xx response	status, statusText, body (full response body as text)
TimeoutError	An attempt exceeded timeoutMs	timeoutMs
NetworkError	DNS, connection, TLS or CORS failure, a body cut off mid-transfer, a WebSocket that fails to connect or drops, or a limit you set	The limit that was reached, when one was: maxResponseBytes, maxPendingRequests, maxLineBytes, maxEventBytes, maxQueuedMessages or maxQueuedBytes
CancelledError	The signal was aborted
InvalidInputError	Bad URL, method, header, option or body. Rejected before anything is sent.	parameter
ParseError	responseType: 'json' and the body isn't JSON
JsInteropError	Unexpected JS ↔ Wasm conversion failure

try {
  await client.get('/users/9');
} catch (error) {
  if (error.kind === 'HttpError' && error.status === 404) {
    // not found
  } else if (error.kind === 'TimeoutError') {
    console.warn(`gave up after ${error.timeoutMs} ms`);
  } else {
    throw error;
  }
}

With a retry budget, an error whose retry the budget refused also has retryBudgetExhausted: true, whatever its kind.

Long error bodies (such as an HTML error page) are truncated to 200 characters in message. error.body always has the full text.