Clarifications on the different types of errors

[asmundwego]

In the documentation there are examples that checks on error.name in the catch.
An example is if (error.name === 'HTTPError') { /* ... */ }
Will this be the same as calling if (error instanceof HTTPError) { /* ... */ } ?
Another example is if (error.name === 'AbortError') { /* ... */ } but there are no type from ky called AbortError - are all errors that are thrown specifically by ky of type HTTPError?

[sindresorhus]

Possible errors:

• HTTPError: Ky error, non-2xx with error.response;
• TimeoutError: Ky timeout;
• AbortError: user-abort (AbortController);
• TypeError: network failures. (related: Best way to handle Fetch errors such as Failed to fetch, NetworkError when attempting to fetch resource, etc. #545)

Whether instanceof or .name depends on your preference. .name has the benefit of working across realms.

---

What are realms:

A JS realm is an isolated execution environment. Each realm has its own global object, global scope, built-ins (Array, Object, etc.), and prototype chains. Different realms don’t share identity for built-ins (Array from one realm !== Array from another), but they can exchange objects if references cross realms (e.g. iframes, Workers).