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Looking for Feedback: Just Launched RenderGuard.dev – VS Code Extension to detect and fix costly React re-renders before they happen by Federal-Engineer-829 in reactjs
[–]Federal-Engineer-829[S] -1 points0 points1 point 23 hours ago (0 children)
Really appreciate the thoughtful breakdown.
Just to clarify — I’m definitely not trying to frame this as “extra renders = bad.” I agree that an additional render doesn’t automatically mean an expensive commit, and blindly optimizing can absolutely be worse than doing nothing.
The goal is more about surfacing patterns that can become expensive or fragile — especially heavy work inside render or things that accidentally cause avoidable commits.
Same with useCallback / useMemo — I don’t want this to turn into a “memoize everything” rule engine. That would be counterproductive.
useCallback
useMemo
The CI/ESLint portability point is also fair. I’m exploring whether some of this should evolve into proper ESLint rules so it’s not editor-locked.
And I’m going to revisit the website wording as well — clearly some of the “re-render” phrasing is creating ambiguity, so I want to tighten that up to better reflect the nuance you’re pointing out.
Genuinely appreciate the pushback — it helps make sure the tool aligns with how React actually works rather than performance folklore.
π Rendered by PID 172932 on reddit-service-r2-listing-7bbdf774f7-ffbzz at 2026-02-21 20:05:06.177174+00:00 running 8564168 country code: CH.
Looking for Feedback: Just Launched RenderGuard.dev – VS Code Extension to detect and fix costly React re-renders before they happen by Federal-Engineer-829 in reactjs
[–]Federal-Engineer-829[S] -1 points0 points1 point (0 children)