Files
gemini-nexus/.agent/skills/vercel-react-best-practices/rules/rerender-simple-expression-in-memo.md
AngeloooooandDraculabo 8ed4593f73 Refactor Gemini model display: filter old versions, group low/high pкo, and improve naming (#114)
* Refactor Gemini model display: filter old versions, group low/high pro, and improve naming

* Fix potential negative minutes and refine Gemini 3 Pro grouping logic based on PR feedback

* The account change process has been sped up

* Address PR review: enhance error message and parameterize polling interval in process handler

* Address PR review: fix potential race condition in database backup logic

* fix: prevent renderer white screen and harden sentry gating

* feat:  localize model labels

* chore: enable hoisted node-linker

* chore: ignore .agent/.claude/.codex in prettier

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Co-authored-by: Draculabo <[email protected]>
2026-02-19 19:37:30 +08:00

1023 B

title, impact, impactDescription, tags
title impact impactDescription tags
Do not wrap a simple expression with a primitive result type in useMemo LOW-MEDIUM wasted computation on every render rerender, useMemo, optimization

Do not wrap a simple expression with a primitive result type in useMemo

When an expression is simple (few logical or arithmetical operators) and has a primitive result type (boolean, number, string), do not wrap it in useMemo. Calling useMemo and comparing hook dependencies may consume more resources than the expression itself.

Incorrect:

function Header({ user, notifications }: Props) {
  const isLoading = useMemo(() => {
    return user.isLoading || notifications.isLoading;
  }, [user.isLoading, notifications.isLoading]);

  if (isLoading) return <Skeleton />;
  // return some markup
}

Correct:

function Header({ user, notifications }: Props) {
  const isLoading = user.isLoading || notifications.isLoading;

  if (isLoading) return <Skeleton />;
  // return some markup
}