React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.
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Use vercel-composition-patterns to refactor [React component] into a scalable compositional API that removes boolean-prop proliferation and centralizes shared state appropriately; apply React 19 guidance only if the project uses React 19+.
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name: vercel-composition-patternsdescription: React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.license: MITmetadata: author: vercel version: '1.0.0'
React Composition Patterns
Composition patterns for building flexible, maintainable React components. Avoid
boolean prop proliferation by using compound components, lifting state, and
composing internals. These patterns make codebases easier for both humans and AI
agents to work with as they scale.
When to Apply
Reference these guidelines when:
Refactoring components with many boolean props
Building reusable component libraries
Designing flexible component APIs
Reviewing component architecture
Working with compound components or context providers
Rule Categories by Priority
Priority
Category
Impact
Prefix
1
Component Architecture
HIGH
architecture-
2
State Management
MEDIUM
state-
3
Implementation Patterns
MEDIUM
patterns-
4
React 19 APIs
MEDIUM
react19-
Quick Reference
1. Component Architecture (HIGH)
architecture-avoid-boolean-props - Don't add boolean props to customize
behavior; use composition
architecture-compound-components - Structure complex components with shared
context
2. State Management (MEDIUM)
state-decouple-implementation - Provider is the only place that knows how
state is managed
state-context-interface - Define generic interface with state, actions, meta
for dependency injection
state-lift-state - Move state into provider components for sibling access
3. Implementation Patterns (MEDIUM)
patterns-explicit-variants - Create explicit variant components instead of
boolean modes
patterns-children-over-render-props - Use children for composition instead
of renderX props
4. React 19 APIs (MEDIUM)
⚠️ React 19+ only. Skip this section if using React 18 or earlier.
react19-no-forwardref - Don't use forwardRef; use use() instead of useContext()
How to Use
Read individual rule files for detailed explanations and code examples: