convert js object to form data ask question

1function buildFormData(formData, data, parentKey) {
2  if (data && typeof data === 'object' && !(data instanceof Date) && !(data instanceof File)) {
3    Object.keys(data).forEach(key => {
4      buildFormData(formData, data[key], parentKey ? `${parentKey}[${key}]` : key);
5    });
6  } else {
7    const value = data == null ? '' : data;
8
9    formData.append(parentKey, value);
10  }
11}
12
13function jsonToFormData(data) {
14  const formData = new FormData();
15
16  buildFormData(formData, data);
17
18  return formData;
19}
20
21const my_data = {
22  num: 1,
23  falseBool: false,
24  trueBool: true,
25  empty: '',
26  und: undefined,
27  nullable: null,
28  date: new Date(),
29  name: 'str',
30  another_object: {
31    name: 'my_name',
32    value: 'whatever'
33  },
34  array: [
35    {
36      key1: {
37        name: 'key1'
38      }
39    }
40  ]
41};
42
43jsonToFormData(my_data)
44