Invalidating cache when testing preload outside of a react app in pure js

[jansepke]

I'm using preload before my react app gets loaded to do an API call that is then also available in the React App for useSWR. If I want to test my preload code I need to invalidate the SWR cache. I cannot currently cannot see a way to do this.

before react app gets started:

const permissions = await preload<UserPermissions>(PERMISSION_URL, fetcher);
if (permissions.foo === "bar") {
 // do this
} else {
 // do that
}

test1:

mockAxios.get.mockResolvedValueOnce({ data: { foo: 'bar' }, });

await init(); // will go into the "do this" branch

test2:

mockAxios.get.mockResolvedValueOnce({ data: { foo: 'bar2' }, });

await init(); // should go into the "do that" branch but will go into "do this" because SWR is caching the mocked response

How can I invalidate the preload cache from outside of an React app?

• Can I use SWR outside of react, in pure js? #801
• cache not exported globally + populateCache not working as expected #2352