---
title: "IDE Rule: React Router V7"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/spec-ide-rule-react-router-v7"
modality: "IDE_RULE"
category: "Framework IDE Rules"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# IDE Rule: React Router V7

**Summary:** IDE Rule: React Router V7 is a verified IDE RULE blueprint on Promptally in Framework IDE Rules optimized for leading AI models. Cursorrules Mdc specification for IDE Rule: React Router V7. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | IDE_RULE |
| Category | Framework IDE Rules |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 571 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```mdc
---
description: React Router v7 rules for framework mode, data routers, loaders, actions, route modules, and progressive enhancement
globs: ["app/routes/**/*", "src/routes/**/*", "routes/**/*", "react-router.config.*", "vite.config.*", "**/*.tsx", "**/*.ts"]
alwaysApply: false
---

# React Router v7 Rules

## Route Modules

- Use route modules as the boundary for route UI, loader data, actions, metadata, and error boundaries.
- Keep route modules small; move shared UI to components and reusable data access to services.
- Prefer file-based routing in framework mode when the project is configured for it.
- Use nested routes for shared layouts and progressive disclosure.
- Export route-specific `ErrorBoundary` components for recoverable route failures.

## Data Loading

- Use loaders for route data that should be available before render.
- Keep loaders deterministic and side-effect free.
- Validate params and search params at the loader boundary.
- Return typed data and consume it through route hooks rather than duplicating fetch logic in components.
- Use deferred or streaming patterns only when they improve perceived performance.

## Mutations

- Use actions for route mutations and form submissions.
- Prefer `Form`, `useFetcher`, and `useSubmit` for progressive enhancement.
- Revalidate affected loader data after mutations.
- Handle validation errors as typed action data instead of generic exceptions.
- Keep server-only secrets and privileged operations out of client actions.

## Navigation and State

- Store shareable state in URL params or search params.
- Keep ephemeral UI state local to components.
- Use pending navigation state to show optimistic or loading UI.
- Avoid global state for data that belongs to route loaders.

## TypeScript and Testing

- Type loader and action return values.
- Add tests for route loaders, actions, validation failures, and error boundaries.
- Use integration tests for critical form and navigation flows.
- Mock network and persistence at the route-service boundary.

## Common Mistakes

- Do not duplicate loader fetches in `useEffect`.
- Do not mutate data in loaders.
- Do not hide route errors behind a single generic app-level catch-all.
- Do not put auth checks only in components when loader data is protected.

```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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