useSWRMutation - Type error: Expected 2-3 arguments, but got 1.

[mindsworth]

info: v2.2.5

Bug report

I am not really sure if it's bug but I believe it to be a type bug.

Description / Observed Behavior

In my current project Nextjs 14.1.4, Typescript 5. I have successfully setup swr with global swrConfig where I have added the fetcher and all is perfectly working as expected, except the type error Type error: Expected 2-3 arguments, but got 1. that I'm getting since I am not passing the fetcher option.

Is there how I can extend the type declaration to make fetcher optional?

Thanks for the good work, SWR is a great tool.

Note: The code is working as expected, just the type.

[mindsworth]

After spending some time on this I was able to extend the type by adding the following line to this file swr.d.ts;

But it will be cool if this can be made optional here