ARCHITECTURE-CRITICAL-UPDATE.mdā¢1.5 kB
# šØ CRITICAL ARCHITECTURE UPDATE - JIT Implementation Structure
**Date**: January 12, 2025
**Priority**: CRITICAL
**Impact**: All future development work
---
## š Key Discovery: Hybrid Architecture
The JIT v5.1.0 implementation uses a **hybrid architecture** that was not previously documented:
### Architecture Pattern
```
Main Server: /dist/browser-automation-api-jit-v5.1.0.js
ā (imports)
Tool Modules: /src/tools/*.js
ā (delegates to)
Tool Classes: createTool() ā tool.method()
```
### Critical Implications
#### ā
**Changes Propagate Automatically**
- Modifications to `/src/tools/` files ARE picked up by the JIT server
- No build step required (ES modules)
- **BUT**: Server restart required for changes to take effect
#### ā ļø **Development Process**
1. Modify source file in `/src/tools/`
2. **MUST restart MCP server** (changes cached in memory)
3. Changes take effect immediately after restart
#### šÆ **Bug Fix Status Update**
- ā
Fixes applied to correct source files
- ā
Architecture supports change propagation
- ā Changes not active due to server caching
- š§ **SOLUTION**: Force server restart with cache clearing
---
## š Documentation Updates Required
All future development must reference:
- `/docs/technical/jit-architecture-deep-dive.md` - Complete architecture analysis
- `/docs/implementation/jit-bugfixes-v5.1.1.md` - Bug fix implementation details
**This update is now part of the foundational knowledge base.**