feat: update server-js template

Author: zhensherlock

.changeset/small-dryers-crash.md

@@ -0,0 +1,5 @@
+---
+'create-mcp-kit': patch
+---
+
+feat: update server-js template

packages/create-mcp-kit/template/server-js/package.json.hbs

@@ -70,7 +70,7 @@
     "conventional-changelog-cli": "^5.0.0",
 {{/if}}
     "cross-env": "^10.0.0",
-    "esbuild": "^0.25.9",
+    "esbuild": "^0.25.10",
 {{#if (includes plugins 'style')}}
     "eslint": "^9.35.0",
     "eslint-plugin-import": "^2.32.0",

packages/create-mcp-kit/template/server-js/src/services/web.js.hbs

@@ -1,7 +1,4 @@
 {{#if (or (includes transports 'streamable') (includes transports 'sse'))}}
-  {{#if (includes transports 'streamable')}}
-import { nanoid } from 'nanoid'
-  {{/if}}
 import express from 'express'
   {{#if (includes transports 'streamable')}}
 import { isInitializeRequest } from '@modelcontextprotocol/sdk/types.js'
@@ -10,6 +7,9 @@ import { StreamableHTTPServerTransport } from '@modelcontextprotocol/sdk/server/
   {{#if (includes transports 'sse')}}
 import { SSEServerTransport } from '@modelcontextprotocol/sdk/server/sse.js'
   {{/if}}
+  {{#if (includes transports 'streamable')}}
+import { generateSessionId } from '@/utils'
+  {{/if}}
 
 export async function webServer(server, options) {
   const app = express()
@@ -33,7 +33,7 @@ export async function webServer(server, options) {
       transport = transports.streamable[sessionId]
     } else if (!sessionId && isInitializeRequest(req.body)) {
       transport = new StreamableHTTPServerTransport({
-        sessionIdGenerator: () => nanoid(),
+        sessionIdGenerator: () => generateSessionId(),
         onsessioninitialized: sessionId => {
           transports.streamable[sessionId] = transport
         },

packages/create-mcp-kit/template/server-js/src/utils/index.js.hbs

@@ -1,3 +1,9 @@
+import { nanoid } from 'nanoid'
+
+export function generateSessionId() {
+  return nanoid()
+}
+
 export function getOptions(argv, pkg) {
   return {
     name: pkg.name,