Pass sessionIdGenerator as undefined for stateless mode (#46)

* Pass `sessionIdGenerator` as `undefined` for stateless mode

Author: chiragjn

package-lock.json

@@ -31,7 +31,7 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.2.0",
     "@eslint/js": "^9.18.0",
-    "@modelcontextprotocol/sdk": "^1.10.0",
+    "@modelcontextprotocol/sdk": "^1.10.2",
     "@nestjs/common": "^11.0.5",
     "@nestjs/core": "^11.0.5",
     "@nestjs/platform-express": "^11.0.5",

package.json

@@ -76,7 +76,7 @@ export function createStreamableHttpController(
       // Create a singleton transport for all requests
       this.statelessTransport = new StreamableHTTPServerTransport({
         // statelessMode: true, // TODO: Uncomment when this PR is merged and released: https://github.com/modelcontextprotocol/typescript-sdk/pull/362
-        sessionIdGenerator: () => undefined,
+        sessionIdGenerator: undefined,
         enableJsonResponse:
           this.options.streamableHttp?.enableJsonResponse || false,
       });