unexpected token useeffect react native

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15 Jul 2020

1useEffect is meant to handle any sort of "side effect" (making a change in some 
2external system, logging to the console, making an HTTP request, etc...) that 
3is triggered by a change in your components data or in reaction to the 
4component rendering. It replaces componentDidMount, componentDidUnmount, and 
5componentDidReceiveProps, or some code that is run any time your state changes.
6
7It can be challenging to grasp the nuances of its use, but by understanding 
8when it runs and how to control that, it can become a little bit easier to wrap
9your head around.
10
11https://www.leighhalliday.com/use-effect-hook

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