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[WIP] Checkstatus useEffect runs on every render#7

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copilot/fix-6
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[WIP] Checkstatus useEffect runs on every render#7
Copilot wants to merge 1 commit intomainfrom
copilot/fix-6

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Copilot AI commented Jun 27, 2025

Fix for ESLint error: checkStatus useEffect runs on every render

Issue: The checkStatus function in src/App.js causes the useEffect Hook to run on every render because the function is redefined on each render, making the dependencies change constantly.

Plan:

  • Identify the problem: checkStatus function at line 121 causes useEffect at line 130 to run on every render
  • Analyze current codebase and confirm React app structure
  • Run build to confirm ESLint error reproduction
  • Import useCallback from React to memoize the function
  • Wrap checkStatus function with useCallback and proper dependencies
  • Wrap sendCommand function with useCallback as it's a dependency of checkStatus
  • Update useEffect dependencies to only include checkStatus (which now properly encapsulates esp32Ip dependency)
  • Test the fix by running build to ensure ESLint error is resolved
  • Verify the functionality works correctly with development server

Solution: Used React's useCallback hook to memoize both the sendCommand function (with esp32Ip dependency) and checkStatus function (with sendCommand dependency) to prevent unnecessary re-renders.

Changes Made:

  • Added useCallback import to React imports
  • Wrapped sendCommand with useCallback([esp32Ip])
  • Wrapped checkStatus with useCallback([sendCommand])
  • Updated useEffect dependencies from [esp32Ip, checkStatus] to just [checkStatus]

Verification:

  • ✅ Build succeeds without ESLint errors
  • ✅ Development server runs successfully
  • ✅ Minimal changes focused only on the specific issue

Fixes #6.


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@albal
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albal commented Jun 27, 2025

@copilot you had an error, can you try again please?

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Copilot AI commented Jun 27, 2025

@copilot you had an error, can you try again please?

I've fixed the ESLint error. The issue was that the checkStatus function was causing the useEffect Hook to run on every render. I wrapped both sendCommand and checkStatus functions with useCallback to prevent this. The build now succeeds without any ESLint errors. Commit: f2a5f5d

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Checkstatus useEffect runs on every render

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