In roots.ts, clientCapabilites.roots and response.roots are optional.

Fixes #2818

Author: cliffhall

src/everything/server/roots.ts

@@ -30,7 +30,7 @@ export const roots: Map<string | undefined, Root[]> = new Map<
  */
 export const syncRoots = async (server: McpServer, sessionId?: string) => {
   const clientCapabilities = server.server.getClientCapabilities() || {};
-  const clientSupportsRoots: boolean = clientCapabilities.roots !== undefined;
+  const clientSupportsRoots: boolean = clientCapabilities?.roots !== undefined;
 
   // Fetch the roots list for this client
   if (clientSupportsRoots) {
@@ -41,14 +41,14 @@ export const syncRoots = async (server: McpServer, sessionId?: string) => {
         const response = await server.server.listRoots();
         if (response && "roots" in response) {
           // Store the roots list for this client
-          roots.set(sessionId, response.roots);
+          roots.set(sessionId, response?.roots);
 
           // Notify the client of roots received
           await server.sendLoggingMessage(
             {
               level: "info",
               logger: "everything-server",
-              data: `Roots updated: ${response.roots.length} root(s) received from client`,
+              data: `Roots updated: ${response?.roots?.length} root(s) received from client`,
             },
             sessionId
           );