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formbricks/.cursor/rules/react-context-patterns.mdc
2025-05-27 12:07:31 +00:00

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---
description:
globs:
alwaysApply: false
---
# React Context & Provider Patterns
## Context Provider Best Practices
### Provider Implementation
- Use TypeScript interfaces for provider props with optional `initialCount` for testing
- Implement proper cleanup in `useEffect` to avoid React hooks warnings
- Reference: [apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/(analysis)/components/ResponseCountProvider.tsx](mdc:apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/(analysis)/components/ResponseCountProvider.tsx)
### Cleanup Pattern for Refs
```typescript
useEffect(() => {
const currentPendingRequests = pendingRequests.current;
const currentAbortController = abortController.current;
return () => {
if (currentAbortController) {
currentAbortController.abort();
}
currentPendingRequests.clear();
};
}, []);
```
### Testing Context Providers
- Always wrap components using context in the provider during tests
- Use `initialCount` prop for predictable test scenarios
- Mock context dependencies like `useParams`, `useResponseFilter`
- Example from [apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/(analysis)/summary/components/SurveyAnalysisCTA.test.tsx](mdc:apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/(analysis)/summary/components/SurveyAnalysisCTA.test.tsx):
```typescript
render(
<ResponseCountProvider survey={dummySurvey} initialCount={5}>
<ComponentUnderTest />
</ResponseCountProvider>
);
```
### Required Mocks for Context Testing
- Mock `next/navigation` with `useParams` returning environment and survey IDs
- Mock response filter context and actions
- Mock API actions that the provider depends on
### Context Hook Usage
- Create custom hooks like `useResponseCountContext()` for consuming context
- Provide meaningful error messages when context is used outside provider
- Use context for shared state that multiple components need to access