feat: implement rerender functionality to fix host component rerender performance issue

[ScriptedAlchemy]

🎯 Overview

This PR implements the rerender functionality to solve the performance issue described in GitHub issue #4171, where host component rerenders caused the entire remote app to be recreated instead of just rerendering.

🔧 Changes Made

1. Enhanced Type Definitions (types.ts)

• Added optional rerender?: (props: T) => void to ProviderFnParams<T> interface
• Created BridgeComponentInstance interface with rerender method
• Maintained full backward compatibility with existing API

2. State Management System (bridge-base.tsx)

• Implemented StatefulBridgeWrapper component using React state
• Added intelligent prop update detection and efficient rerender mechanism
• Supports both automatic state updates and custom rerender functions
• Avoids React root recreation on prop changes

3. Optimized Prop Handling (component.tsx)

• Replaced problematic ...Object.values(props) dependency that caused performance issues
• Separated initial render from prop updates using two distinct useEffect hooks
• Added efficient rerender path with fallback to original behavior for compatibility
• Used stable prop change detection with JSON.stringify

4. Comprehensive Testing (bridge.spec.tsx)

• Added tests for custom rerender functionality
• Verified efficient prop updates vs full renders
• Tested backward compatibility scenarios
• Added state management validation tests

5. Documentation (RERENDER_EXAMPLE.md)

• Complete usage examples and API reference
• Performance comparison (before vs after)
• Implementation details and benefits

🚀 API Usage

Automatic Optimization (Default - No Code Changes Needed)

// Remote App (existing code works automatically!)
export default createBridgeComponent({
  rootComponent: App,
});

Custom Rerender Logic (Advanced Use Cases)

// Remote App with custom rerender function
export default createBridgeComponent({
  rootComponent: App,
  rerender: (props) => {
    // Custom efficient update logic
    console.log('Efficiently updating with new props:', props);
    updateGlobalStore(props);
  },
});

Host App Usage (No Changes Required)

function HostApp() {
  const [count, setCount] = React.useState(0);
  
  return (
    <>
      <button onClick={() => setCount(s => s + 1)}>Count {count}</button>
      <Remote1App props={{ message: 'Hello', count }} />
    </>
  );
}

🔄 Performance Impact

Before (Problem):

Host rerenders → Remote props change → root.render() called → Entire React tree recreated 😵

After (Solution):

Host rerenders → Remote props change → setState() called → Efficient React update ✅

Or with custom rerender:

Host rerenders → Remote props change → custom rerender() called → User-defined logic ✅

🧪 Implementation Details

State Management Architecture

1. StatefulBridgeWrapper: New React component that manages props via useState
2. Prop State Map: Tracks setState functions for external updates
3. Intelligent Detection: Checks for existing state before deciding update strategy
4. Fallback Support: Maintains original behavior when rerender not available

Backward Compatibility

• ✅ Existing code works without any changes
• ✅ Automatic optimization applied by default
• ✅ Custom rerender functions are optional
• ✅ All existing tests continue to pass

✅ Quality Assurance

Build & Type Safety

• ✅ TypeScript Compilation: All types generated correctly
• ✅ Build Success: nx build bridge-react passes
• ✅ Type Definitions: Proper interfaces exported in dist/index.d.ts

Testing Results

• ✅ Functionality Verified: Custom rerender test passes
• ✅ Existing Tests: All existing tests continue to pass
  • prefetch.spec.ts: 5/5 tests ✅
  • createLazyComponent.spec.tsx: 6/6 tests ✅
• ✅ No Breaking Changes: Full backward compatibility maintained

Performance Verification

• ✅ Custom Test: Verified rerender method works correctly
• ✅ State Updates: Confirmed efficient prop updates without root recreation
• ✅ Memory Management: Proper cleanup in destroy method

🎉 Benefits Delivered

• ✅ Performance: Eliminates React root recreation on prop changes
• ✅ Flexibility: Optional custom rerender for advanced use cases
• ✅ Compatibility: Zero breaking changes to existing API
• ✅ Type Safety: Full TypeScript support with proper interfaces
• ✅ Extensibility: Hook system integration maintained
• ✅ Documentation: Comprehensive examples and usage guide

📋 Files Changed

• packages/bridge/bridge-react/src/types.ts - Enhanced type definitions
• packages/bridge/bridge-react/src/provider/versions/bridge-base.tsx - State management system
• packages/bridge/bridge-react/src/remote/component.tsx - Optimized prop handling
• packages/bridge/bridge-react/__tests__/bridge.spec.tsx - Comprehensive tests
• packages/bridge/bridge-react/RERENDER_EXAMPLE.md - Documentation and examples

Fixes #4171

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[chatgpt-codex-connector]

Register rerender state against the wrong DOM node

The state map uses document.querySelector('[data-module-name="${moduleName}"]') to look up the element whose setState is stored. When multiple instances of the same remote module are rendered, this selector always returns the first matching element, so subsequent instances overwrite the entry for the first DOM node and never register their own. Later rerenders for those instances fall back to recreating the root or call setState on an unmounted component, leading to stale UI and potential React warnings. The map key needs to use the actual container passed to render, not a global query by module name.

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