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The Useless UseCallback
Why most memoization is downright useless...
Other ways to fix this include a "we memoize everything all the time" policy, or to have strictly enforced naming convention like a "mustBeMemoized" prefix for props that need to be referentially stable. This custom hook takes an Array of hotkeys as input, and then creates a memoized onKeyDown function, which is passed to an effect. More good news: React has realized that oftentimes, we need imperative access to the latest value of something during a reactive effect without explicitly re-triggering it, so they are going to add this pattern for exactly this use-case as a first class primitive, useEffectEvent.
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