vulcan-file-ops

#!/usr/bin/env node // CRITICAL: Detect MCP mode and suppress console output BEFORE any imports // MCP servers use stdin/stdout for JSON-RPC via stdio transport // Detection: stdin/stdout are NOT TTY (piped/redirected) = MCP mode // // EXCEPTION: --help and --version flags should always output to console // even when stdin/stdout are piped (e.g., in scripts or CI environments) const isHelpOrVersion = process.argv.some( (arg) => arg === "--help" || arg === "-h" || arg === "--version" || arg === "-v" ); // MCP mode detection: suppress console if ANY of these are true: // 1. stdin is piped/redirected (not a TTY) - MCP clients pipe JSON-RPC via stdin // 2. stdout is piped/redirected (not a TTY) - MCP clients read JSON-RPC from stdout // 3. argv contains "mcp" or "stdio" - explicit MCP mode indicator // Using OR (||) instead of AND (&&) because MCP clients may only pipe one direction const isMCP = !isHelpOrVersion && (!process.stdin.isTTY || !process.stdout.isTTY || process.argv.some((arg) => arg.includes("mcp") || arg.includes("stdio"))); if (isMCP) { // Suppress all console methods (but NOT stdout/stderr streams - MCP SDK needs those) const noop = () => {}; console.log = noop; console.error = noop; console.warn = noop; console.info = noop; console.debug = noop; // NOTE: Do NOT redirect process.stdout.write or process.stderr.write // as the MCP SDK uses those for JSON-RPC protocol communication } import { runServer } from "./server/index.js"; // Run the server and handle any fatal errors runServer().catch((error) => { // Only show errors when not running under MCP (to avoid protocol corruption) if (!isMCP) { // Restore console.error temporarily for fatal errors const originalError = console.error; if (originalError.toString() !== "() => {}") { originalError("Fatal error running server:", error); } } process.exit(1); });