# Frontend Monorepo Optimization - Index

## 📚 Documentation Index

This directory contains comprehensive documentation for the frontend monorepo optimization project.

### Quick Start

**New to the optimization?** Start here:

1. **[TURBO_QUICK_START.md](./TURBO_QUICK_START.md)** - Get started in 5 minutes
   - New commands
   - Expected performance
   - Common issues

### Comprehensive Guides

2. **[TURBO_OPTIMIZATION_GUIDE.md](./TURBO_OPTIMIZATION_GUIDE.md)** - Complete reference
   - Detailed configuration changes
   - Performance targets
   - Cache strategy
   - Troubleshooting
   - Remote caching setup

3. **[PHASE_1_TURBO_OPTIMIZATION_COMPLETE.md](./PHASE_1_TURBO_OPTIMIZATION_COMPLETE.md)** - Implementation summary
   - All changes made
   - Files modified
   - Next steps
   - Verification checklist

### Tools

4. **[scripts/benchmark-turbo.sh](./scripts/benchmark-turbo.sh)** - Benchmark tool
   - Automated performance testing
   - Cache statistics
   - Recommendations

---

## 🚀 Quick Reference

### Performance Targets

| Metric            | Before | After | Improvement |
| ----------------- | ------ | ----- | ----------- |
| Full build (cold) | ~2min  | <45s  | 62%         |
| Full build (warm) | ~2min  | <5s   | 95%         |
| Web build         | ~30s   | <15s  | 50%         |
| Cache hit rate    | N/A    | >80%  | N/A         |

### Key Commands

```bash
# Build with optimization
bun run build

# Build specific app
bun run build:web

# Run benchmark
./scripts/benchmark-turbo.sh

# CI/CD
bun run ci:build
bun run ci:test
```

---

## 📁 File Structure

```
frontend/
├── README_TURBO_OPTIMIZATION.md      # This file
├── TURBO_QUICK_START.md              # Quick start guide
├── TURBO_OPTIMIZATION_GUIDE.md       # Comprehensive guide
├── PHASE_1_TURBO_OPTIMIZATION_COMPLETE.md  # Implementation summary
│
├── turbo.json                         # Optimized task configuration
├── package.json                       # Scripts with concurrency
├── .turbo/
│   └── config.json                    # Daemon + UI config
│
└── scripts/
    └── benchmark-turbo.sh             # Benchmark tool
```

---

## 🎯 What Changed?

### 1. Turbo Configuration (turbo.json)

**Before**:

```json
{
  "tasks": {
    "build": {
      "dependsOn": ["^build"],
      "outputs": ["dist/**"]
    }
  }
}
```

**After**:

```json
{
  "ui": "tui",
  "globalDependencies": [".env", "turbo.json"],
  "tasks": {
    "build": {
      "dependsOn": ["^build"],
      "inputs": ["src/**", "!**/*.test.*"],
      "outputs": ["dist/**", ".next/**"],
      "outputLogs": "hash-only",
      "env": ["VITE_*", "NEXT_PUBLIC_*"]
    },
    "test": {
      "dependsOn": [], // ← No longer depends on build!
      "outputLogs": "new-only"
    }
  }
}
```

**Key Improvements**:

- ✅ Precise input patterns (excludes tests, docs)
- ✅ Hash-only logs for faster builds
- ✅ Removed false dependencies (parallel execution)
- ✅ Environment variable tracking

### 2. Package Scripts (package.json)

**Added**:

```json
{
  "build": "turbo build --concurrency=8",
  "build:parallel": "turbo build --parallel --concurrency=8",
  "test": "turbo test --concurrency=4",
  "typecheck": "turbo typecheck --concurrency=8",
  "ci:build": "turbo build typecheck lint --concurrency=8 --output-logs=hash-only"
}
```

**Benefits**:

- ✅ 8 concurrent builds (max CPU usage)
- ✅ 4 concurrent tests (memory-safe)
- ✅ CI-optimized scripts

### 3. Daemon Configuration (.turbo/config.json)

**New File**:

```json
{
  "telemetry": false,
  "daemon": true,
  "ui": "tui"
}
```

**Benefits**:

- ✅ Faster subsequent builds (daemon keeps running)
- ✅ Better visual feedback (TUI)

---

## ✅ Verification

### Run Benchmark

```bash
cd frontend
./scripts/benchmark-turbo.sh
```

**Expected Output**:

```
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  Benchmark Summary
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Full build (cold)               42s | ✓ Target: <45s
Full build (warm)                3s | ✓ Target: <5s
Web app build                   13s | ✓ Target: <15s
Typecheck                       12s | ✓ Target: <15s
Lint                             8s | ✓ Target: <10s

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  Assessment
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✓ Optimization successful: 5/5 tests passed (100%)
```

### Manual Tests

```bash
# Cold build
bun run clean
time bun run build

# Warm build
time bun run build

# Check cache
du -sh .turbo/cache
```

---

## 🔧 Troubleshooting

### Slow Builds

```bash
# Clear cache and rebuild
bun run clean
bun install
bun run build
```

### Cache Not Working

```bash
# Force rebuild to regenerate cache
turbo build --force

# Check cache stats
turbo build --summarize
```

### Dependency Issues

```bash
# Regenerate lockfile
bun install

# Clear all caches
rm -rf .turbo/cache
rm -rf node_modules
bun install
```

---

## 📊 Optimization Strategy

### Phase 1: Turbo Pipeline (Complete) ✅

**Target**: 62% faster builds

- Optimized task configuration
- Parallel execution
- Enhanced caching
- **Status**: Implementation complete, awaiting verification

### Phase 2: Remote Caching (Optional)

**Target**: 90%+ cache hit across team

- Vercel remote cache
- Team collaboration
- CI/CD speedup

### Phase 3: Bundle Size Optimization

**Target**: 30% smaller bundles

- Code splitting
- Tree shaking
- Lazy loading

### Phase 4: Runtime Performance

**Target**: 50% faster initial load

- Route-based splitting
- Image optimization
- Preloading

### Phase 5: Memory Optimization

**Target**: 40% memory reduction

- Reduce footprint
- Optimize dev server

---

## 🎓 Learn More

### Turbo Documentation

- [Turbo Docs](https://turbo.build/repo/docs)
- [Caching](https://turbo.build/repo/docs/core-concepts/caching)
- [Task Pipeline](https://turbo.build/repo/docs/core-concepts/monorepos/running-tasks)
- [Remote Caching](https://turbo.build/repo/docs/core-concepts/remote-caching)

### Best Practices

- [Task Dependencies](https://turbo.build/repo/docs/crafting-your-repository/using-dependson)
- [Cache Configuration](https://turbo.build/repo/docs/crafting-your-repository/using-cache)
- [Environment Variables](https://turbo.build/repo/docs/crafting-your-repository/using-environment-variables)

---

## 🤝 Contributing

### Adding New Tasks

1. Update `turbo.json` with task configuration
2. Add precise `inputs` pattern
3. Define `outputs` for caching
4. Test cache hit rate

### Modifying Existing Tasks

1. Update `inputs` if file patterns change
2. Verify cache still works (`turbo build --summarize`)
3. Document changes in this README

---

## 📝 Changelog

### 2026-01-30 - Phase 1 Complete

- ✅ Optimized turbo.json with granular inputs
- ✅ Added concurrency flags to package.json
- ✅ Created .turbo/config.json with daemon
- ✅ Added comprehensive documentation
- ✅ Created benchmark tool
- ⏳ Awaiting performance verification

---

## 🎉 Success Metrics

**Implementation**: ✅ Complete
**Documentation**: ✅ Complete
**Tooling**: ✅ Complete
**Verification**: ⏳ Pending

**Next Step**: Run `./scripts/benchmark-turbo.sh` to verify performance targets!

---

## 📞 Support

**Issues?** Check:

1. [TURBO_QUICK_START.md](./TURBO_QUICK_START.md) - Common issues section
2. [TURBO_OPTIMIZATION_GUIDE.md](./TURBO_OPTIMIZATION_GUIDE.md) - Troubleshooting section
3. [Turbo Discord](https://turbo.build/discord)

---

**Last Updated**: 2026-01-30
**Phase**: 1 of 5
**Status**: ✅ Implementation Complete - Ready for Verification
