[Mistake]: Unused key in useOptimistic code sample

[lnicepei]

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Summary

The code example for useOptimistic hook contains unused key parameter

Page

https://19.react.dev/reference/react/useOptimistic#usage

Details

In the Optimistically updating forms section, inside the code sample there is an unused key parameter, which, apparently, should have been used on the line 25:

<div key={index}>

[Wellitsabhi]

It's not a mistake, 'key' parameter is used in reconciliation to optimize render performance . And it's right way of writing code when using .map