The useFootGun()
hook is designed for testing purposes to simulate a scenario where an asynchronous task gradually increases in complexity, potentially impacting the performance of a React application. It is important to note that deliberately causing poor performance is not a standard practice and should be used cautiously for testing purposes only.
-
Import the Hook
import useFootGun from 'react-footgun';
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Use the Hook
function App() { const iterations = useFootGun(); // Use the 'iterations' value as needed }
The useFootGun()
hook performs the following actions:
- Initializes a state variable
iterations
using theuseState
hook, starting with an initial value of1
. - In the first
useEffect
hook:- Runs a heavy computation task with the current number of iterations.
- Re-runs the computation whenever the
iterations
value changes.
- In the second
useEffect
hook:- Sets up an interval that increases the
iterations
value by 1000 every second. - Cleans up the interval when the component unmounts.
- Sets up an interval that increases the
- In the third
useEffect
hook:- Initializes a
running
flag to control the while loop. - Defines an async function
runLoop()
that runs a while loop with a delay of 1 second between iterations. - Calls the
heavyTask()
function (simulated heavy computation) inside the loop. - Sets the
running
flag tofalse
when the component unmounts, stopping the loop.
- Initializes a
- This hook is intended for testing purposes and should not be used in production code.
- Deliberately degrading performance is not a recommended practice.
- For accurate performance testing, use browser developer tools or profiling tools.
The provided code is an example for testing purposes only. It is not recommended to intentionally degrade performance in a production environment.