TeamCity MCP Server

import type { Server } from '@modelcontextprotocol/sdk/server/index.js'; export type LifecycleTransport = { close?: () => Promise<void> | void; }; /** * Connects the provided MCP server to the given transport and keeps the process * alive until the server closes or reports an unrecoverable error. */ export async function startServerLifecycle( server: Server, transport: LifecycleTransport ): Promise<void> { await server.connect(transport as never); return new Promise<void>((resolve, reject) => { const previousOnClose = server.onclose; const previousOnError = server.onerror; const cleanup = () => { server.onclose = previousOnClose; server.onerror = previousOnError; }; server.onclose = () => { previousOnClose?.(); cleanup(); resolve(); }; server.onerror = (rawError) => { previousOnError?.(rawError); const error = rawError instanceof Error ? rawError : new Error(String(rawError)); const closeTransport = () => { if (!transport.close) { return Promise.resolve(); } try { return Promise.resolve(transport.close()); } catch (closeError) { return Promise.reject(closeError); } }; void closeTransport() .catch(() => { // Ignore secondary close failures; the original error is what matters. }) .finally(() => { cleanup(); reject(error); }); }; }); }