const increment = useCallback(() => setCount((x) => x + 1), [])
                  
                  
                  
                  
                  
                    return { count, increment }
                  
                  
                  }
                  
                  
                  
                  
                  
                  What happens if i cut out useCallback?
                  
                  
                
Nothing! Anyway, it has no sense to use useCallback in this case!
It's used in the readme of react-hooks-testig-library
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