fix: improve implmenetation for group by

Signed-off-by: Muhammad Aaqil <aaqilcs102@gmail.com>

Author: aaqilniz

packages/rest/src/writer.ts

@@ -50,33 +50,42 @@ export function writeResultToResponse(
         // TODO(ritch) remove this, should be configurable
         // See https://github.com/loopbackio/loopback-next/issues/436
         response.setHeader('Content-Type', 'application/json');
-        let customResult = result;
-        let org: {[key: string]: Object[]} = {};
-
-        if (result && typeof result === 'object') {
-          if (Array.isArray(result)) {
-            customResult = [];
-            result.forEach((item: {[key: string]: Object[]}) => {
-              org = {};
-              if (typeof item === 'object') {
-                Object.keys(item).forEach(key => {
-                  org[key] = item[key];
-                });
-                customResult.push(org);
-              } else {
-                customResult.push(item);
-              }
-            });
-          } else {
-            org = {};
-            Object.keys(result).forEach(key => {
-              org[key] = result[key];
-            });
-            customResult = org;
-          }
-        }
+        // let customResult = result;
+        // let org: {[key: string]: Object[]} = {};
+        // if (result && typeof result === 'object') {
+        //   if (Array.isArray(result)) {
+        //     customResult = [];
+        //     result.forEach((item: {[key: string]: Object[]}) => {
+        //       org = {};
+        //       if (typeof item === 'object') {
+        //         Object.keys(item).forEach(key => {
+        //             org[key] = item[key];
+        //         });
+        //         customResult.push(org);
+        //       } else {
+        //         customResult.push(item);
+        //       }
+        //     });
+        //   } else {
+        //     org = {};
+        //     Object.keys(result).forEach(key => {
+        //       console.log('-----------------');
+        //       console.log(key);
+        //       console.log('-----------------');
+        //       org[key] = result[key];
+        //     });
+        //     customResult = org;
+        //   }
+        // }
         // TODO(bajtos) handle errors - JSON.stringify can throw
-        result = JSON.stringify(customResult);
+        // result = JSON.stringify(customResult);
+        console.log('------------before------------');
+        console.log(result);
+        console.log('------------before------------');
+        result = JSON.stringify(result);
+        console.log('------------after------------');
+        console.log(result);
+        console.log('------------after------------');
       }
       break;
     default: