MCP Debugger

# tests/vitest.setup.ts @source-hash: c4755b8703c17965 @generated: 2026-02-10T00:42:00Z **Purpose:** Global Vitest test configuration and setup file that initializes test environments, manages global state, and provides cross-platform compatibility for ESM-based tests. **Key Components:** - **Error Handling Setup (L12-18):** Configures global unhandled rejection/exception handlers to surface test failures with concise error messages during test execution - **Console Output Configuration (L21):** Explicitly removes CONSOLE_OUTPUT_SILENCED environment variable to ensure test output visibility - **Global Type Declarations (L24-29):** TypeScript declarations for `__dirname` and `testPortManager` globals to support ESM context and port management - **ESM __dirname Polyfill (L32-39):** Cross-platform implementation that recreates `__dirname` functionality in ESM modules, with Windows-specific path normalization - **Global Port Manager (L42):** Exposes `testPortManager` globally for test port allocation and cleanup across test files - **Test Lifecycle Hooks:** - `beforeAll` (L45-48): Resets port manager state before each test file - `afterEach` (L51-54): Cleans up Vitest mocks after each individual test - `afterAll` (L57-70): Comprehensive cleanup including port manager reset and optional test server cleanup **Dependencies:** - `vitest` - Core testing framework and lifecycle hooks - `./test-utils/helpers/port-manager.js` - Port allocation management utility - `./test-utils/helpers/session-helpers.js` - Optional test server utilities (dynamically imported) **Architecture Notes:** - Uses dynamic import for session helpers to avoid hard dependencies - Implements graceful error handling for optional cleanup operations - Provides cross-platform path handling for Windows/Unix systems - Maintains clean test isolation through systematic mock and state resets