MCP of MCPs

import { McpServerConnectionConfig } from "../domain/types.js"; import * as fs from "fs"; /** * ConfigLoader handles loading configuration from various sources */ export class ConfigLoader { /** * Parse configuration from command line arguments or environment variable * @returns Array of server configurations * @throws Error if no configuration is provided */ static loadConfig(): McpServerConnectionConfig[] { // Option 1: From environment variable MCP_SERVERS_CONFIG if (process.env.MCP_SERVERS_CONFIG) { try { return JSON.parse(process.env.MCP_SERVERS_CONFIG); } catch (error) { console.error("Error parsing MCP_SERVERS_CONFIG:", error); process.exit(1); } } // Option 2: From command line argument --config const configIndex = process.argv.indexOf("--config"); if (configIndex !== -1 && process.argv[configIndex + 1]) { try { return JSON.parse(process.argv[configIndex + 1]); } catch (error) { console.error("Error parsing --config argument:", error); process.exit(1); } } // Option 3: From config file path --config-file const configFileIndex = process.argv.indexOf("--config-file"); if (configFileIndex !== -1 && process.argv[configFileIndex + 1]) { try { const configFile = process.argv[configFileIndex + 1]; const fileContent = fs.readFileSync(configFile, "utf-8"); return JSON.parse(fileContent); } catch (error) { console.error("Error reading config file:", error); process.exit(1); } } console.error("No configuration provided. Use one of:"); console.error(" - Environment variable: MCP_SERVERS_CONFIG"); console.error(" - Command line: --config '<json>'"); console.error(" - Config file: --config-file <path>"); process.exit(1); } }