Any way to use a syncronous fetcher function that provides initial data?

[morgs32]

It would be great if useSWR would immediately return data when the fetcher is synchronous. It seems to always return undefined. Any way to do that besides passing default data to SWRConfig??

[morgs32]

Kind of like when you pass a function to useState??

[koba04]

Why do you want to have a synchronous function as fetcher?
SWR is designed fetcher is an async function, so it can be hard to support a synchronous fetcher.

If you want to return data at the initial rendering, you can also use the fallbackData option.

https://swr.vercel.app/docs/api#options

[3pleFly]

If the data is synchronous use, "fallbackData", to "initialize" it.