Initial push of Plunk Next

apps/api/src/middleware/requestId.ts

@@ -0,0 +1,22 @@
+import {randomUUID} from 'node:crypto';
+import type {NextFunction, Request, Response} from 'express';
+
+/**
+ * Middleware to add a unique request ID to each request
+ * The request ID is used for error tracking and debugging
+ */
+export const requestIdMiddleware = (req: Request, res: Response, next: NextFunction) => {
+  // Check if request ID already exists (e.g., from load balancer)
+  const existingRequestId = req.headers['x-request-id'] as string | undefined;
+
+  // Generate new ID if not provided
+  const requestId = existingRequestId || randomUUID();
+
+  // Store in request object for use in handlers
+  res.locals.requestId = requestId;
+
+  // Send back in response headers for client-side tracking
+  res.setHeader('X-Request-ID', requestId);
+
+  next();
+};