I've found that when using multiple useState hooks, it becomes easier to move to useReducer, especially when conditions mutate multiple pieces of state. I think useState still works well in your example, but once you build a more complex login (with 2FA, requiring a new user to set a new password, etc), it can get messy quickly.
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I've found that when using multiple
useStatehooks, it becomes easier to move touseReducer, especially when conditions mutate multiple pieces of state. I thinkuseStatestill works well in your example, but once you build a more complex login (with 2FA, requiring a new user to set a new password, etc), it can get messy quickly.