feat: implement automatic bidirectional environment variable synchronization #4876
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…ization This implementation provides automatic, immediate, bidirectional synchronization of environment variables between Python JSII runtime and Node.js kernel processes. ## Core Components ### Node.js/TypeScript Implementation - **EnvironmentMonitor**: Proxy-based monitoring of process.env changes - **Enhanced Kernel API**: Added env.notifyChange method for external sync - **Comprehensive test coverage**: 79 passing tests across 3 test suites ### Python Implementation - **PythonEnvironmentMonitor**: Wrapper for os.environ with change detection - **Enhanced ProcessProvider**: Bidirectional sync logic between runtimes - **Thread-safe operations**: Proper locking for concurrent access ### Test Infrastructure - **TypeScript tests**: Full coverage of EnvironmentMonitor, Kernel integration, API types - **Python tests**: Comprehensive testing of Python-side functionality - **Integration utilities**: Test helpers in jsii-calc for end-to-end validation ## Key Features - Zero configuration required - works automatically - Immediate synchronization via synchronous IPC - Proper handling of undefined/null values as deletions - Thread-safe concurrent access - Maintains backward compatibility - Comprehensive error handling 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
Enhanced Python type definitions to use Literal types for better type safety: - EnvironmentChangeRequest.api now uses Literal["env.notifyChange"] - EnvironmentChangeRequest.type now uses Literal["set", "delete"] - EnvironmentChangeEvent.type now uses Literal["set", "delete"] This provides compile-time type checking and prevents invalid string values, improving code safety and IDE support. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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Summary
This PR implements automatic bidirectional environment variable synchronization between Python JSII runtime and Node.js kernel processes, as specified in the design document.
Key Features
Implementation Components
Node.js/TypeScript Side
process.envchangesenv.notifyChangemethod for external synchronizationPython Side
os.environwith automatic change detectionTest Infrastructure
Technical Details
The implementation uses:
Files Changed
Test plan
🤖 Generated with Claude Code