README.md

eslint-plugin-react-query-must-invalidate-queries

ESLint plugin to enforce best practices when working with TanStack Query

Installation

npm install eslint-plugin-react-query-must-invalidate-queries --save-dev
# or
yarn add eslint-plugin-react-query-must-invalidate-queries --dev
# or
pnpm add eslint-plugin-react-query-must-invalidate-queries --save-dev
# or
bun add eslint-plugin-react-query-must-invalidate-queries --dev

Usage

Add react-query-must-invalidate-queries to the plugins section of your .eslintrc configuration file:

{
  "plugins": ["react-query-must-invalidate-queries"],
  "rules": {
    "react-query-must-invalidate-queries/require-mutation-invalidation": "error" // or "warn"
  }
}

You can see a real world config here using this: https://github.com/ayinke-llc/malak/blob/main/web/ui/eslint.config.mjs

Rules

require-mutation-invalidation

🔧 This rule enforces that useMutation hooks include an onSuccess callback that calls invalidateQueries to ensure data consistency.

Why?

When using mutations in React Query, it's important to invalidate related queries after a successful mutation to ensure the UI reflects the latest server state without having to do a lot of mental prep.

This rule helps prevent stale data by ensuring that mutations properly invalidate affected queries.

Rule Details

This rule enforces:

• Presence of an onSuccess callback in useMutation hooks
• The onSuccess callback must include a call to invalidateQueries

✅ Examples of correct code:

useMutation({
  mutationFn: updateUser,
  onSuccess: () => {
    queryClient.invalidateQueries({ queryKey: ["users"] });
  },
});

useMutation({
  mutationFn: updateUser,
  onSuccess: () => {
    const { invalidateQueries } = queryClient;
    invalidateQueries({ queryKey: ["users"] });
  },
});

useMutation({
  mutationFn: updateUser,
  onSuccess: async () => {
    await someOtherOperation();
    await queryClient.invalidateQueries({ queryKey: ["users"] });
  },
});

❌ Examples of incorrect code:

useMutation({
  mutationFn: updateUser,
});

useMutation({
  mutationFn: updateUser,
  onSuccess: () => {
    console.log("Success!");
  },
});

useMutation({
  mutationFn: updateUser,
  onSuccess: () => {},
});

When Not To Use It

You might want to disable this rule if:

• You have mutations that intentionally don't need to invalidate any queries
• You're handling cache updates through other means like setQueryData
• You have a specific caching strategy that doesn't require query invalidation

Contributing

Contributions are welcome! Please read our contributing guidelines to get started.

License

MIT

Resources

• Rule Documentation
• TanStack Query Mutations
• TanStack Query Invalidation from Mutations