Handle spawning the client and server on Windows using correct paths

bin/cli.js

@@ -1,65 +1,60 @@
 #!/usr/bin/env node
 
 import { join, dirname } from "path";
+import { spawnPromise } from "spawn-rx";
 import { fileURLToPath } from "url";
-import concurrently from "concurrently";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
-// Get command line arguments
-const [, , command, ...mcpServerArgs] = process.argv;
+async function main() {
+  // Get command line arguments
+  const [, , command, ...mcpServerArgs] = process.argv;
 
-const inspectorServerPath = join(__dirname, "../server/build/index.js");
+  const inspectorServerPath = join(__dirname, "../server/build/index.js");
 
-// Path to the client entry point
-const inspectorClientPath = join(__dirname, "../client/bin/cli.js");
+  // Path to the client entry point
+  const inspectorClientPath = join(__dirname, "../client/bin/cli.js");
 
-console.log("Starting MCP inspector...");
+  const CLIENT_PORT = process.env.CLIENT_PORT ?? "5173";
+  const SERVER_PORT = process.env.SERVER_PORT ?? "3000";
 
-function escapeArg(arg) {
-  if (arg.includes(" ") || arg.includes("'") || arg.includes('"')) {
-    return `\\"${arg.replace(/"/g, '\\\\\\"')}\\"`;
+  console.log("Starting MCP inspector...");
+
+  const abort = new AbortController();
+
+  let cancelled = false;
+  process.on("SIGINT", () => {
+    cancelled = true;
+    abort.abort();
+  });
+
+  const server = spawnPromise(
+    "node",
+    [
+      inspectorServerPath,
+      ...(command ? [`--env`, command] : []),
+      ...(mcpServerArgs ?? []),
+    ],
+    { env: { PORT: SERVER_PORT }, signal: abort.signal },
+  );
+
+  const client = spawnPromise("node", [inspectorClientPath], {
+    env: { PORT: CLIENT_PORT },
+    signal: abort.signal,
+  });
+
+  try {
+    await Promise.any([server, client]);
+  } catch (e) {
+    if (!cancelled) throw e;
   }
-  return arg;
+
+  return 0;
 }
 
-const serverCommand = [
-  `node`,
-  inspectorServerPath,
-  command ? `--env ${escapeArg(command)}` : "",
-  mcpServerArgs.length
-    ? `--args="${mcpServerArgs.map(escapeArg).join(" ")}"`
-    : "",
-]
-  .filter(Boolean)
-  .join(" ");
-
-const CLIENT_PORT = process.env.CLIENT_PORT ?? "";
-const SERVER_PORT = process.env.SERVER_PORT ?? "";
-
-const { result } = concurrently(
-  [
-    {
-      command: `PORT=${SERVER_PORT} ${serverCommand}`,
-      name: "server",
-    },
-    {
-      command: `PORT=${CLIENT_PORT} node ${inspectorClientPath}`,
-      name: "client",
-    },
-  ],
-  {
-    prefix: "name",
-    killOthers: ["failure", "success"],
-    restartTries: 3,
-  },
-);
-
-console.log(
-  `\n🔍 MCP Inspector is up and running at http://localhost:${CLIENT_PORT || 5173} 🚀`,
-);
-
-result.catch((err) => {
-  console.error("An error occurred:", err);
-  process.exit(1);
-});
+main()
+  .then((_) => process.exit(0))
+  .catch((e) => {
+    console.error(e);
+    process.exit(1);
+  });

package.json

@@ -27,7 +27,7 @@
     "build": "npm run build-server && npm run build-client",
     "start-server": "cd server && npm run start",
     "start-client": "cd client && npm run preview",
-    "start": "node ./bin/cli.ts",
+    "start": "node ./bin/cli.js",
     "prepare": "npm run build",
     "prettier-fix": "prettier --write .",
     "publish-all": "npm publish --workspaces --access public && npm publish --access public"