useSWRSubscription key doesnt deconstruct array

[imownbey]

Bug report

Description / Observed Behavior

When using an array key the key that is passed to the subscribe function is a string and not an array

Expected Behavior

I expect it to be deconstructed similar to is shown under "Usage" here https://swr.vercel.app/docs/subscription

Repro Steps / Code Example

  const key = "a key";
  const { data } = useSWRSubscription(["key", key], (passedKey, { next }) => {
    passedKey === '@"key","a key",' // returns true
    return () => {};
  });

https://codesandbox.io/s/relaxed-silence-h556kz?file=/src/App.js

Additional Context

2.1.2

[promer94]

we should pass original key here instead of serialized key

swr/subscription/index.ts

Line 67 in bad51f6

const dispose = subscribe(key, { next })

[Zheaoli]

I would like to take this issue

[crutch12]

By the way
Could we pass originKey in onError/onSuccess callback?
Now it accepts only serialized key, it's terrible.

@Zheaoli @promer94