Component Systems

Navigation

System Foundations

A system in component-based design represents a collection of interdependent elements working harmoniously to achieve a common goal while maintaining clear boundaries with other systems.

Core Principles

  • Encapsulation: Each system maintains internal state and logic
  • Interoperability: Systems expose standardized interfaces
  • Extensibility: Systems can be composed hierarchically
System Blueprint
import { createSystem } from '@core/framework'

const authSystem = createSystem({
  name: 'Authentication',
  dependencies: ['user-store', 'session-manager'],
  actions: {
    login: async (credentials) => { /*...*/ },
    logout: () => { /*...*/ }
  }
})

export default authSystem

Component Relationships

System Architecture Visualization
Component Interaction Diagram

Consumer Pattern

  • UI components consume system data through hooks
  • Service providers inject system dependencies
  • Event emitters trigger cross-system updates

Provider Pattern

  • Context providers encapsulate system state
  • Theme providers enable cascading styles
  • Locale providers manage i18n configuration

State Management

State Segregation

Each system maintains its own isolated state. This prevents unintended side effects and promotes deterministic behavior across the application.

System State Lifecycle:

  1. Initialization through constructor
  2. Dependency injection resolution
  3. Subscribers registration
  4. Change detection and update propagation

Best Practices

Explicit Dependencies

Always declare dependencies in system registration to enable proper dependency resolution order.

Boundary Testing

Implement automated tests to validate system-to-system interfaces with contract-first testing approaches.

Performance Budgets

Set and monitor system-specific performance metrics including initialization time and payload size.