backedn converted to ts

utils.ts

@@ -0,0 +1,15 @@
+export const isUserId = function(req: unknown): req is { user: { id: string } } {
+  let user: unknown = null
+  let id: unknown = null
+  if (typeof req === 'object' && req)
+    if ('user' in req) {
+      user = req.user
+      if (typeof user === 'object' && user && 'id' in user) {
+        id = user.id
+        if (typeof id === 'string') {
+          return true
+        }
+      }
+    }
+  return false
+}