AI Code Toolkit

/** * Config File Finder Utility * * DESIGN PATTERNS: * - Utility function pattern for reusable logic * - Fail-fast pattern with early returns * - Environment variable configuration pattern * * CODING STANDARDS: * - Use sync filesystem operations for config discovery (performance) * - Check PROJECT_PATH environment variable first * - Fall back to current working directory * - Support both .yaml and .json extensions * - Return null if no config file is found * * AVOID: * - Throwing errors (return null instead for optional config) * - Hardcoded file names without extension variants * - Ignoring environment variables */ import { existsSync } from 'node:fs'; import { resolve, join } from 'node:path'; /** * Find MCP configuration file by checking PROJECT_PATH first, then cwd * Looks for both mcp-config.yaml and mcp-config.json * * @returns Absolute path to config file, or null if not found */ export function findConfigFile(): string | null { const configFileNames = ['mcp-config.yaml', 'mcp-config.yml', 'mcp-config.json']; // Check PROJECT_PATH environment variable first const projectPath = process.env.PROJECT_PATH; if (projectPath) { for (const fileName of configFileNames) { const configPath = resolve(projectPath, fileName); if (existsSync(configPath)) { return configPath; } } } // Fall back to current working directory const cwd = process.cwd(); for (const fileName of configFileNames) { const configPath = join(cwd, fileName); if (existsSync(configPath)) { return configPath; } } // No config file found return null; }