fix: handle array edge case

api/src/utils/helpers/flatten.spec.ts

@@ -111,4 +111,8 @@ describe('flatten', () => {
 
     expect(result).toStrictEqual({});
   });
+
+  it('should throw an error if data is an array', () => {
+    expect(() => flatten([])).toThrow('Data should be an object!');
+  });
 });

api/src/utils/helpers/flatten.ts

@@ -18,6 +18,10 @@ export const flatten = (
   prefix: string | undefined = undefined,
   result: object = {},
 ): object => {
+  if (Array.isArray(data)) {
+    throw new Error('Data should be an object!');
+  }
+
   for (const [key, value] of Object.entries(data)) {
     const path = prefix ? `${prefix}.${key}` : key;