feat: add the remove empty object keys sanitization

src/common/mapper.service.ts

@@ -2,8 +2,12 @@ import fs from "fs";
 import path from "path";
 import appRootPath from 'app-root-path';
 import jsonata from 'jsonata';
+import { removeEmptyObjectKeys } from './utils'
 
-export const map = (data: any, action?: string) => {
+export const map = async (data: any, action?: string) => {
   const expression = jsonata(fs.readFileSync(path.join(appRootPath.toString(), `/mappings/${action}.jsonata`), "utf8"));
-  return expression.evaluate(data);
+
+  let mapped = await expression.evaluate(data);
+  mapped = removeEmptyObjectKeys(mapped);
+  return mapped;
 };

src/common/utils.ts

+export function removeEmptyObjectKeys(obj: any) {
+    for (const key in obj) {
+        if (typeof obj[key] === 'object' && obj[key] !== null) {
+            removeEmptyObjectKeys(obj[key]);
+            if (Object.keys(obj[key]).length === 0) {
+                delete obj[key];
+            }
+        }
+    }
+    return obj;
+}