Make stdout/error echo for client and server

bin/cli.js

@@ -51,12 +51,17 @@ async function main() {
       ...(command ? [`--env`, command] : []),
       ...(mcpServerArgs ? ["--args", mcpServerArgs.join(" ")] : []),
     ],
-    { env: { ...process.env, PORT: SERVER_PORT }, signal: abort.signal },
+    {
+      env: { ...process.env, PORT: SERVER_PORT },
+      signal: abort.signal,
+      echoOutput: true,
+    },
   );
 
   const client = spawnPromise("node", [inspectorClientPath], {
     env: { ...process.env, PORT: CLIENT_PORT },
     signal: abort.signal,
+    echoOutput: true,
   });
 
   // Make sure our server/client didn't immediately fail

package-lock.json

@@ -16,7 +16,7 @@
         "@modelcontextprotocol/inspector-client": "0.2.4",
         "@modelcontextprotocol/inspector-server": "0.2.4",
         "concurrently": "^9.0.1",
-        "spawn-rx": "^5.0.4",
+        "spawn-rx": "^5.1.0",
         "ts-node": "^10.9.2"
       },
       "bin": {
@@ -5737,9 +5737,9 @@
       }
     },
     "node_modules/spawn-rx": {
-      "version": "5.0.4",
-      "resolved": "https://registry.npmjs.org/spawn-rx/-/spawn-rx-5.0.4.tgz",
-      "integrity": "sha512-Do11ahkHLlqN9G/J6fs10gdx25BU33NrpkyN3/DFXIIUVojBiJysl12nC0iGUkE+msJAPflzyfpLWWHGHw/6Xg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/spawn-rx/-/spawn-rx-5.1.0.tgz",
+      "integrity": "sha512-b4HX44hI0usMiHu6LNaZUVg0BGqHuBcl+81iEhZwhvKHz1efTqD/CHBcUbm/uIe5TARy9pJolxU2NMfh6GuQBA==",
       "license": "MIT",
       "dependencies": {
         "debug": "^4.3.7",

package.json

@@ -36,11 +36,11 @@
     "@modelcontextprotocol/inspector-client": "0.2.4",
     "@modelcontextprotocol/inspector-server": "0.2.4",
     "concurrently": "^9.0.1",
-    "spawn-rx": "^5.0.4",
+    "spawn-rx": "^5.1.0",
     "ts-node": "^10.9.2"
   },
   "devDependencies": {
     "@types/node": "^22.7.5",
     "prettier": "3.3.3"
   }
-}
+}