index.ts•3.44 kB
/**
* Figma MCP Server - Main entry point
*
* This server provides a Model Context Protocol (MCP) implementation
* for interacting with the Figma API.
*/
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { execSync } from "child_process";
import * as dotenv from "dotenv";
import { env } from "./config/env.js";
import { registerAllResources } from "./resources.js";
import { initializeWebSocketServer } from "./services/websocket.js";
import { registerAllTools } from "./tools/index.js";
import { log } from "./utils.js";
// Load environment variables
dotenv.config();
// Check for and kill any existing processes using the same port
function killExistingProcesses() {
try {
const wsPort = env.WEBSOCKET_PORT || 3001;
log(`Checking for processes using port ${wsPort}...`);
// Find processes using the websocket port
const findCmd =
process.platform === "win32"
? `netstat -ano | findstr :${wsPort}`
: `lsof -i:${wsPort} | grep LISTEN`;
let output;
try {
output = execSync(findCmd, { encoding: "utf8" });
} catch (e) {
// No process found, which is fine
log("No existing processes found.");
return;
}
// Extract PIDs and kill them
if (output) {
if (process.platform === "win32") {
// Windows: extract PID from last column
const pids = output
.split("\n")
.filter((line) => line.trim())
.map((line) => line.trim().split(/\s+/).pop())
.filter((pid, index, self) => pid && self.indexOf(pid) === index);
pids.forEach((pid) => {
if (pid && parseInt(pid) !== process.pid) {
try {
execSync(`taskkill /F /PID ${pid}`);
log(`Killed process with PID: ${pid}`);
} catch (e) {
log(`Failed to kill process with PID: ${pid}`);
}
}
});
} else {
// Unix-like: extract PID from second column
const pids = output
.split("\n")
.filter((line) => line.trim())
.map((line) => {
const parts = line.trim().split(/\s+/);
return parts[1];
})
.filter((pid, index, self) => pid && self.indexOf(pid) === index);
pids.forEach((pid) => {
if (pid && parseInt(pid) !== process.pid) {
try {
execSync(`kill -9 ${pid}`);
log(`Killed process with PID: ${pid}`);
} catch (e) {
log(`Failed to kill process with PID: ${pid}`);
}
}
});
}
}
} catch (error) {
log(`Error checking for existing processes: ${error}`);
}
}
// Kill any existing processes before starting
killExistingProcesses();
// Create an MCP server
const server = new McpServer({
name: "Figma API",
version: "1.0.0",
});
// Register all tools and resources
registerAllTools(server);
registerAllResources(server);
// Initialize WebSocket server for Figma plugin communication
const wsPort = env.WEBSOCKET_PORT || 3001;
initializeWebSocketServer(wsPort);
// Start the MCP server with stdio transport
const transport = new StdioServerTransport();
server.connect(transport);
// Use logger utility to avoid interfering with stdout used by MCP
log("Figma MCP Server started");
export { server };