chore(internal): make generated MCP servers compatible with Cloudflare worker environments

Author: stainless-app[bot]

packages/mcp-server/src/code-tool-paths.cts

@@ -1,3 +1,5 @@
 // File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
-export const workerPath = require.resolve('./code-tool-worker.mjs');
+export function getWorkerPath(): string {
+  return require.resolve('./code-tool-worker.mjs');
+}

packages/mcp-server/src/code-tool.ts

@@ -1,10 +1,5 @@
 // File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
-import fs from 'node:fs';
-import path from 'node:path';
-import url from 'node:url';
-import { newDenoHTTPWorker } from '@valtown/deno-http-worker';
-import { workerPath } from './code-tool-paths.cjs';
 import {
   ContentBlock,
   McpRequestContext,
@@ -212,6 +207,13 @@ const localDenoHandler = async ({
   reqContext: McpRequestContext;
   args: unknown;
 }): Promise<ToolCallResult> => {
+  const fs = await import('node:fs');
+  const path = await import('node:path');
+  const url = await import('node:url');
+  const { newDenoHTTPWorker } = await import('@valtown/deno-http-worker');
+  const { getWorkerPath } = await import('./code-tool-paths.cjs');
+  const workerPath = getWorkerPath();
+
   const client = reqContext.client;
   const baseURLHostname = new URL(client.baseURL).hostname;
   const { code } = args as { code: string };

packages/mcp-server/src/instructions.ts

@@ -12,29 +12,24 @@ interface InstructionsCacheEntry {
 
 const instructionsCache = new Map<string, InstructionsCacheEntry>();
 
-// Periodically evict stale entries so the cache doesn't grow unboundedly.
-const _cacheCleanupInterval = setInterval(() => {
-  const now = Date.now();
-  for (const [key, entry] of instructionsCache) {
-    if (now - entry.fetchedAt > INSTRUCTIONS_CACHE_TTL_MS) {
-      instructionsCache.delete(key);
-    }
-  }
-}, INSTRUCTIONS_CACHE_TTL_MS);
-
-// Don't keep the process alive just for cleanup.
-_cacheCleanupInterval.unref();
-
 export async function getInstructions(stainlessApiKey: string | undefined): Promise<string> {
+  const now = Date.now();
   const cacheKey = stainlessApiKey ?? '';
   const cached = instructionsCache.get(cacheKey);
 
-  if (cached && Date.now() - cached.fetchedAt <= INSTRUCTIONS_CACHE_TTL_MS) {
+  if (cached && now - cached.fetchedAt <= INSTRUCTIONS_CACHE_TTL_MS) {
     return cached.fetchedInstructions;
   }
 
+  // Evict stale entries so the cache doesn't grow unboundedly.
+  for (const [key, entry] of instructionsCache) {
+    if (now - entry.fetchedAt > INSTRUCTIONS_CACHE_TTL_MS) {
+      instructionsCache.delete(key);
+    }
+  }
+
   const fetchedInstructions = await fetchLatestInstructions(stainlessApiKey);
-  instructionsCache.set(cacheKey, { fetchedInstructions, fetchedAt: Date.now() });
+  instructionsCache.set(cacheKey, { fetchedInstructions, fetchedAt: now });
   return fetchedInstructions;
 }