hook

https://github.com/vercel/swr/blob/43f01571f0a985b5b62792059efe18835c508a94/examples/autocomplete-suggestions/pages/index.js#L21

I know this is only sample code, ... but I can see this suddenly ending up in lost of places verbatim, especially now that we have AI's writing most of our code :D (grin)

Is your feature request related to a problem? Please describe.
Some users require saving objects like ES6 maps which can't be JSON.stringified without a replacer function.

Describe the solution you'd like

We need replacer/ reviver functions optionally to be sent as arguments.

useLocalstorageState('key', value, {
  replacer: () => {},
  reviver: () => {} 
})

`