FLASH PERSISTENCE MIGRATION COMPLETE

Comprehensive guidelines for AI-assisted development within the Editor platform

Flash Persistence Migration Complete ✅

Date: October 19, 2025
Status: ✅ Code Updated | ⚠️ Build Testing Required

🎯 Mission Accomplished

1. Flash Persistence Modernization ✅

Updated Files:

Singularity Library:

Theme Runtime:

Service Files (Angular 20 Modern Injection):

Bug Fixes:

🔧 Changes Made

Singularity Component Refactor

// ❌ BEFORE (NGXS-style)
import { Store, Select } from '@flash-persistence';
@Select(SingularityState.isLoading) isLoading$!: Observable<boolean>;
const currentTree = this.store.selectSnapshot(SingularityState.currentTree);

// ✅ AFTER (Flash Persistence)
import { autoFlashState } from '@storage-system';
protected readonly appState = autoFlashState('singularity-state', {
  isLoading: false,
  statusMessage: 'Initializing...',
  currentTree: null
});
// Access: this.appState().isLoading
// Update: this.appState.update(state => ({ ...state, isLoading: true }))

Theme State Refactor

// ❌ BEFORE (NGXS-style)
@State<ThemeStateModel>({ name: 'theme', defaults: {...} })
@Action(ThemeActions.LoadThemes)
loadThemes(ctx: StateContext<ThemeStateModel>, action: ThemeActions.LoadThemes) {
  ctx.patchState({ availableThemes: action.themes });
}

// ✅ AFTER (Flash Persistence)
private state = autoFlashState<ThemeStateModel>('theme-state', {
  currentTheme: null,
  availableThemes: [],
  loading: false
});
readonly themes = computed(() => this.state().availableThemes);

loadThemes(themes: Theme[]): Observable<boolean> {
  this.state.set({ ...this.state(), availableThemes: themes, loading: false });
  return of(true);
}

Service Dependency Injection Modernization

// ❌ BEFORE (Old Angular)
constructor(@Inject(PLATFORM_ID) private platformId: Object) {}

// ✅ AFTER (Angular 20)
private readonly platformId = inject(PLATFORM_ID);
constructor() {}

📊 Build Status Summary

✅ Fixed & Verified:

⚠️ Pending Verification:

🔥 System Status:

Note: Build testing interrupted by system resource exhaustion (spawn EBADF). This is expected given our earlier system diagnostics showing high load average and excessive file descriptors.

🚀 Next Steps (For You)

Immediate Actions:

  1. Let System Stabilize (5-10 minutes)

    # Monitor system
yarn monitor:processes

# Check load
uptime

  2. Test Individual Builds (Sequential)

    # Build in order:
yarn nx build storage-system --skip-nx-cache
yarn nx build theme-runtime --skip-nx-cache
yarn nx build singularity-lib --skip-nx-cache
yarn nx build editor-web-lib --skip-nx-cache

  3. If Errors Occur:

    # Clean and retry
yarn cleanup:stuck-processes
yarn nx reset

# Build again
yarn nx build <library-name> --skip-nx-cache

🎨 Flash Persistence Usage Examples

For Other Components:

import { autoFlashState } from '@storage-system';

export class YourComponent {
  // ✨ Auto-persisted state with ZERO setup
  protected myState = autoFlashState('my-component-state', {
    data: [],
    loading: false,
    error: null
  });
  
  // Computed (reactive)
  readonly isReady = computed(() => 
    !this.myState().loading && !this.myState().error
  );
  
  // Update state
  updateData(newData: any[]) {
    this.myState.update(state => ({
      ...state,
      data: newData,
      loading: false
    }));
  }
  
  // Access state
  getData() {
    return this.myState().data; // Call like a signal!
  }
}

Key Points:

📝 Migration Checklist

Find and Replace Patterns:

Pattern 1: Store Imports

// Find:
import { Store, Select } from '@flash-persistence';

// Replace:
import { autoFlashState } from '@storage-system';

Pattern 2: Select Decorators

// Find:
@Select(SomeState.someProperty) property$!: Observable<Type>;

// Replace:
readonly property = computed(() => this.state().someProperty);

Pattern 3: Store Injections

// Find:
private store = inject(Store);
const value = this.store.selectSnapshot(SomeState.property);

// Replace:
private state = autoFlashState('key', { property: defaultValue });
const value = this.state().property;

Pattern 4: Inject Decorators

// Find:
constructor(@Inject(TOKEN) private dep: Type) {}

// Replace:
private readonly dep = inject(TOKEN);
constructor() {}

📚 Related Documentation

✅ Success Criteria

🎯 Summary

We have successfully modernized:

The code is ready. Now we just need to verify builds once the system stabilizes from the high load.

Status: Code Migration Complete ✅ | Build Verification Pending ⚠️
Maintainer: @fguijarro
Last Updated: October 19, 2025