refactor: small type improvements (#759)

pnpm-lock.yaml

@@ -304,9 +304,15 @@ importers:
         specifier: ^8.13.0
         version: 8.13.0
     devDependencies:
+      '@types/cors':
+        specifier: ^2.8.17
+        version: 2.8.17
       '@types/express':
         specifier: ^4.17.17
         version: 4.17.17
+      '@types/multer':
+        specifier: ^1.4.11
+        version: 1.4.11
       '@types/node':
         specifier: ^18.11.18
         version: 18.11.18
@@ -3161,6 +3167,12 @@ packages:
       '@types/node': 18.19.3
     dev: true
 
+  /@types/cors@2.8.17:
+    resolution: {integrity: sha512-8CGDvrBj1zgo2qE+oS3pOCyYNqCPryMWY2bGfwA0dcfopWGgxs+78df0Rs3rc9THP4JkOhLsAa+15VdpAqkcUA==}
+    dependencies:
+      '@types/node': 18.19.3
+    dev: true
+
   /@types/debug@4.1.12:
     resolution: {integrity: sha512-vIChWdVG3LG1SMxEvI/AK+FWJthlrqlTu7fbrlywTkkaONwk/UAGaULXRlf8vkzFBLVm0zkMdCquhL5aOjhXPQ==}
     dependencies:
@@ -3252,6 +3264,12 @@ packages:
     resolution: {integrity: sha512-nG96G3Wp6acyAgJqGasjODb+acrI7KltPiRxzHPXnP3NgI28bpQDRv53olbqGXbfcgF5aiiHmO3xpwEpS5Ld9g==}
     dev: true
 
+  /@types/multer@1.4.11:
+    resolution: {integrity: sha512-svK240gr6LVWvv3YGyhLlA+6LRRWA4mnGIU7RcNmgjBYFl6665wcXrRfxGp5tEPVHUNm5FMcmq7too9bxCwX/w==}
+    dependencies:
+      '@types/express': 4.17.17
+    dev: true
+
   /@types/node-osc@6.0.2:
     resolution: {integrity: sha512-/TxCH+NlDoI3hFA6b2O91dpnPAqBDkLb2HEIv5hMVdKnCiWTdJJv2sVnQdX38sBgnals8TjCQEGii+OcMVf2fg==}
     dependencies: