repomix

```bash

# Install dependencies

npm install

# Configure environment

cp .env.example .env.local

# Add: MONGODB_URI, ANTHROPIC_API_KEY

# Run development server

npm run dev

```

Visit [http://localhost:3000](http://localhost:3000)

1. Dynamic Form Rendering

• 11 field types (input, integer, float, select, radio, checkbox, switch, slider, date, textarea, table)
• Conditional field visibility (field-level)
• Real-time validation feedback
• Type-safe value handling

2. Conditional Validation System

• Hidden fields are optional (not validated)
• Visible required fields enforced
• Cross-form conditionals (reference previous form data)
• Boolean/number normalization for switches

3. Flow State Management

• Multi-step workflows with dynamic stepper
• State accumulation across forms
• Step filtering based on conditions
• MongoDB persistence with graceful degradation

4. AI-Assisted Forms

• Claude API integration for guided data collection
• Conversational form flows
• Context-aware suggestions

```

app/

├── api/ # Backend endpoints (chat, form-submission, etc.)

├── page.tsx # Landing page

├── quote/ # Quote generation workflow

└── test-table/ # Table component testing

components/

├── DynamicFormRenderer.tsx # Core form engine

├── ClaudeChat.tsx # Flow orchestration

├── ui/ # shadcn/ui components

└── ai-elements/ # AI-specific UI

lib/

├── flow-engine/ # Workflow execution

│ ├── evaluator.ts # Safe expression evaluation

│ ├── executor.ts # State management

│ └── loader.ts # Flow definition loading

├── form-templates/ # Form schema management

├── validation/

│ └── zod-schema-builder.ts # Dynamic Zod schemas

public/

├── form-templates/ # JSON form definitions (50+ forms)

├── form-flows/ # Multi-step workflow configs

└── models/ # 3D models (GLTF)

```

React Keys

Use stable composite keys to prevent warnings:

```typescript

key={${formId}-section-${sectionIndex}}

key={${formId}-field-${field.id}}

key={${formId}-table-row-${rowIndex}}

```

Type-Safe Values

Always use helper functions:

```typescript

const value = toStringValue(formData[field.name]);

const number = toNumberValue(formData[field.name], 0);

const checked = toBooleanValue(formData[field.name]);

```

Conditional Validation

Pass current data to schema builder:

```typescript

// ✅ Correct: Conditionals see field values

const schema = buildZodSchema(formSpec, mergedData);

// ❌ Wrong: Conditionals can't evaluate

const schema = buildZodSchema(formSpec);

```

State Merging

Merge accumulated state before validation:

```typescript

const accumulatedState = flowExecutor.getState();

const mergedData = { ...accumulatedState, ...formData };

const result = validateFormData(formSpec, mergedData);

```

```

User submits form

↓

Load form template

↓

Merge accumulated state + current data

↓

Build Zod schema (conditional-aware)

↓

Validate form data

↓

If errors: Display inline → Stop

If success:

↓

Save to MongoDB (graceful if fails)

↓

Update FlowExecutor state

↓

Load next step

```

Field-Level (Within Form)

```json

{

"name": "HINGE_TYPE",

"conditional": {

"conditions": [

{ "field": "USE_HINGE", "operator": "equals", "value": 1 }

],

"logic": "AND"

}

}

```

Step-Level (Flow Filtering)

```json

{

"order": 2,

"formTemplate": "hinge-info",

"condition": "SUB_TYPE == 1"

}

```

Validation-Level (Zod Schema)

Hidden fields made optional automatically:

```typescript

const isVisible = checkConditional(field, data);

const effectiveRequired = field.required && isVisible;

```

```bash

# Build form templates from markdown

npm run build:forms

# Validate form definitions

npm run validate:forms

# Check for duplicate field names

node scripts/check-duplicates.js

# Analyze conditional dependencies

node scripts/analyze-conditionals.js

# Verify radio/select option types

node scripts/verify-radio-numeric.js

```

```bash

# Required

MONGODB_URI=mongodb+srv://...

ANTHROPIC_API_KEY=sk-ant-...

# Optional

NEXT_PUBLIC_API_URL=https://...

```

1. Always use composite React keys with formId prefix
2. Always merge state before validation (cross-form conditionals)
3. Always use type-safe value helpers (no direct casts)
4. Never use eval() - use safeEval() from flow-engine
5. Never commit without running validation scripts

```bash

# Run validation scripts before commit

npm run validate:forms

node scripts/check-duplicates.js

node scripts/verify-radio-numeric.js

# Future: Unit tests

npm test

```

2025-11-29

1. React Key Fixes

- Prefixed all keys with formId for uniqueness

- Table rows use stable rowIndex keys

- Removed duplicate wrapper divs

1. Conditional Validation

- Hidden fields made optional automatically

- Boolean/number normalization for switch fields

- Cross-form data merging for conditionals

1. Type System

- Added ConditionalOperator, FieldCondition, FieldConditional types

- FormField.conditional property added

1. Flow State

- State merging before validation

- Enables field references across forms

See ./docs/ for detailed technical documentation:

• codebase-summary.md - Architecture overview
• code-standards.md - Development patterns
• system-architecture.md - Data flow diagrams

```bash

# Build production

npm run build

# Start production server

npm start

# Deploy to Vercel

vercel --prod

```

1. Expression Evaluation: Whitelist-only syntax (no function calls, no eval())
2. Input Validation: Zod enforces strict types and ranges
3. API Security: Server-side env vars, no client exposure

1. No backtracking (flow progresses forward only)
2. No async validation rules (client-side Zod only)
3. Single-select tables (no multi-row selection)
4. Max conditional depth: 1 (no nested conditionals)

Proprietary

Contact: [Internal team]

---

Tech Stack Details:

• Next.js 15.0.3 (App Router)
• React 19.0.0
• TypeScript 5.x
• Zod 3.24.1 (validation)
• MongoDB 6.12.0
• Anthropic Claude API 0.33.1
• Three.js + React Three Fiber (3D rendering)
• TailwindCSS + shadcn/ui