GraphQL: Optimize queries, fixes some null returns (on object), fix stitched GraphQLUpload (#6709)

* Optimize query, fixes some null returns, fix stitched GraphQLUpload

* Fix authData key selection

* Prefer Iso string since other GraphQL solutions use this format

* fix tests

Co-authored-by: Antonio Davi Macedo Coelho de Castro <adavimacedo@gmail.com>

src/middlewares.js

@@ -239,13 +239,13 @@ export function handleParseHeaders(req, res, next) {
         });
       }
     })
-    .then((auth) => {
+    .then(auth => {
       if (auth) {
         req.auth = auth;
         next();
       }
     })
-    .catch((error) => {
+    .catch(error => {
       if (error instanceof Parse.Error) {
         next(error);
         return;
@@ -416,12 +416,16 @@ export function promiseEnforceMasterKeyAccess(request) {
  */
 export function promiseEnsureIdempotency(req) {
   // Enable feature only for MongoDB
-  if (!(req.config.database.adapter instanceof MongoStorageAdapter)) { return Promise.resolve(); }
+  if (!(req.config.database.adapter instanceof MongoStorageAdapter)) {
+    return Promise.resolve();
+  }
   // Get parameters
   const config = req.config;
-  const requestId = ((req || {}).headers || {})["x-parse-request-id"];
+  const requestId = ((req || {}).headers || {})['x-parse-request-id'];
   const { paths, ttl } = config.idempotencyOptions;
-  if (!requestId || !config.idempotencyOptions) { return Promise.resolve(); }
+  if (!requestId || !config.idempotencyOptions) {
+    return Promise.resolve();
+  }
   // Request path may contain trailing slashes, depending on the original request, so remove
   // leading and trailing slashes to make it easier to specify paths in the configuration
   const reqPath = req.path.replace(/^\/|\/$/, '');
@@ -435,23 +439,27 @@ export function promiseEnsureIdempotency(req) {
       break;
     }
   }
-  if (!match) { return Promise.resolve(); }
+  if (!match) {
+    return Promise.resolve();
+  }
   // Try to store request
-  const expiryDate = new Date(new Date().setSeconds(new Date().getSeconds() + ttl));
-  return rest.create(
-    config,
-    auth.master(config),
-    '_Idempotency',
-    { reqId: requestId, expire: Parse._encode(expiryDate) }
-  ).catch (e => {
-    if (e.code == Parse.Error.DUPLICATE_VALUE) {
-      throw new Parse.Error(
-        Parse.Error.DUPLICATE_REQUEST,
-        'Duplicate request'
-      );
-    }
-    throw e;
-  });
+  const expiryDate = new Date(
+    new Date().setSeconds(new Date().getSeconds() + ttl)
+  );
+  return rest
+    .create(config, auth.master(config), '_Idempotency', {
+      reqId: requestId,
+      expire: Parse._encode(expiryDate),
+    })
+    .catch(e => {
+      if (e.code == Parse.Error.DUPLICATE_VALUE) {
+        throw new Parse.Error(
+          Parse.Error.DUPLICATE_REQUEST,
+          'Duplicate request'
+        );
+      }
+      throw e;
+    });
 }
 
 function invalidRequest(req, res) {