Comments (3)
Yes, I think the docs might be misleading when using the word fetch, as you are supposed to make your own handler, as oppose to pass window.fetch
. The examples are very well done though. Maybe a PR is worth the effort?
As for the second part, it happens because there's a few other values coming out from the hook, and in this case the isValidating
prop triggers this re-render (there's also the error
prop and the revalidate function).
import React, { Suspense } from "react";
import useSWR from "swr";
export function useWordPromise(word) {
const { data, ...rest } = useSWR(
word,
arg => {
console.log("calls promise handler");
return new Promise(resolve => resolve(arg));
},
{
suspense: true
}
);
console.log("calls hook", rest);
return data;
}
function Word() {
const word = useWordPromise("the word");
return <p>{word}</p>;
}
function App() {
return (
<Suspense fallback={<p>Loading Word</p>}>
<Word />
</Suspense>
);
}
When I run the above, I see three calls hook
, the initial pass, when isValidating
is true, and finally when isValidating
becomes false (we got data), but only one calls promise handler
. Remember too that this library does re-fetch on auto focus.
from swr.
Thank you! We'll make the documentation about fetch
clearer.
The second question should be related to #57.
from swr.
Should be fixed in [email protected]
.
from swr.
Related Issues (20)
- useSWR not making the fetch request
- useSWR deduped by mistake after cache clear HOT 1
- useSWRInfinite continually fetches the first page (no caching observed) HOT 3
- Type mismatch on SWR Configuration
- Got "None of the selected packages has a "watch" script" when pnpm watch run HOT 2
- useSWR seems to trigger suspense boundaries even if not using suspense mode HOT 5
- Type error when overriding global fetcher function with null HOT 3
- SWR mutate does not trigger even if I have a hook mounted with the same key HOT 1
- fallback doesn't work with `useSWRInfinite` and next app router HOT 1
- Type error when fallback option with undefined.
- Repeat render
- useSWRMutation - Type error: Expected 2-3 arguments, but got 1. HOT 1
- Cannot read properties of null (reading 'useSyncExternalStore') HOT 1
- Optimistic update with useSWRMutation HOT 2
- typescript is incorrect when using different fetchers but the same key HOT 3
- Type safe Key as Url for the SWR fetcher
- Unexpected `revalidateIfStale = false` initial load behavior on key change HOT 1
- useSWR('key', fetcher) calls fetcher non-deterministically even when `key` is in the fallback
- Can I call both of onSuccess function in trigger options and useSWRMutation options?
- Fetcher isn't run again when error boundary resets using Suspense. HOT 1
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