fix: if env object is empty object, StdioClientTransport.start is failed(modelcontextprotocol/typescript-sdk#394)

Signed-off-by: sunrabbit123 <[email protected]>

Author: sunrabbit123

package.json

@@ -35,6 +35,7 @@
     "build": "tsup",
     "lint": "eslint .",
     "format": "eslint --fix .",
+    "test": "vitest",
     "prepack": "pnpm build",
     "publint": "publint",
     "release": "pnpm lint && pnpm prepack && publint && pnpm dlx bumpp"
@@ -43,7 +44,7 @@
     "commander": "^13.1.0"
   },
   "devDependencies": {
-    "@modelcontextprotocol/sdk": "^1.10.1",
+    "@modelcontextprotocol/sdk": "^1.9.0",
     "@types/node": "^22.14.1",
     "@wrtnlabs/eslint-config": "^0.4.3",
     "bumpp": "^10.1.0",
@@ -52,6 +53,7 @@
     "jiti": "^2.4.2",
     "publint": "^0.3.12",
     "tsup": "^8.4.0",
-    "typescript": "^5.8.3"
+    "typescript": "^5.8.3",
+    "vitest": "^3.1.2"
   }
 }

pnpm-lock.yaml

@@ -2,13 +2,12 @@ import { Client } from "@modelcontextprotocol/sdk/client/index.js";
 import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
 import { program } from "commander";
 
+import type { McpConnection } from "./mcp.js";
+
+import { connectMcp } from "./mcp.js";
 import { createServer } from "./server";
 import { startSSEServer } from "./sse";
 
-import type { McpConnection } from ".";
-
-import { connectMcp } from ".";
-
 export function buildCli<T extends string>(props: { version: string; name: string; mcpServers: Record<T, McpConnection>; env: Record<string, T> }) {
   return program
     .version(props.version)