JSON to CSV

[
  { "name": "John Doe", "age": 25, "city": "New York" },
  { "name": "Jane Doe", "age": 30, "city": "Los Angeles" },
  { "name": "Bob Smith", "age": 22, "city": "Chicago" }
]

name,age,city
John Doe,25,New York
Jane Doe,30,Los Angeles
Bob Smith,22,Chicago

[
  {
    "name": "John Doe",
    "age": 25,
    "address": {
      "street": "123 Main St",
      "city": "New York",
      "state": "NY",
      "postalCode": "10001"
    },
    "hobbies": ["reading", "running"]
  }
]

name,age,address.street,address.city,address.state,address.postalCode,hobbies[0],hobbies[1]
John Doe,25,123 Main St,New York,NY,10001,reading,running

[
  { "name": "Alice", "age": 30 },
  { "name": "Bob", "city": "Paris" },
  { "name": "Carol", "age": 25, "city": "Rome" }
]

name,age,city
Alice,30,
Bob,,Paris
Carol,25,Rome