fix: adjust SecondParameter utility type

[victorboucher]

Status

READY

Description

Fixes the poorly typed SecondParameter utility type.

[melloware]

Can you please open an Issue ticket explaining what is poorly typed and show us how this ticket makes it better?

[melloware]

@soartec-lab since this affects SWR can you review this change?

[soartec-lab]

@melloware

Of cource 👍 I'll review this, so could you assign me reviewer for this PR ?

[soartec-lab]

@victorboucher @melloware

This change will affect the case where global mutator is used, and I don't think it will affect the generated swr custom hook alone.
At the same time, we thought it would have the following advantages:

• Can be expressed in a simpler and more understandable form
• Being able to remove eslint disable

[soartec-lab]

(excuse me. I got a little confused and ended up editing the comment several times.)

I reviewed it. But i would like to confirm the scope of the effect a little more, so if possible, could you give me some time?

[melloware]

No problem just let me know what your final decision is.

[soartec-lab]

@melloware
Previously, never was returned if the second argument did not exist, but we investigated the impact of changing it to undefined.

In the first place, there will be no mismatch due to the case where the second argument does not exist, and even if it were to happen, there would be no problem because the type was specified as never | undefined in the function used. so, i agree with merging PR.