Type error when overriding global fetcher function with null about swr

[huksley]

Tangential: why do you need to override the fetcher to null? If this is a conditional fetching, I set key to null, not a fetcher, i.e.:

const { data: customers } = useSWR(action === "list" ? "/api/customers" : null, fetcher)

[rickythefox]

@huksley I have a global SWR config that defines a fetcher. In one case I want to use swr with a null fetcher to manually control the data fetching process, e.g. call fetch on click and store the resulting value using the mutate function. Another use case for a null fetcher would be using SWR as a state manager.