从json中取消多个列的嵌套

{
  "id": 1,
  "name": "John",
  "address": {
    "street": "123 Main St",
    "city": "Anytown",
    "zipcode": "12345"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john@example.com"
    },
    {
      "type": "phone",
      "value": "555-1234"
    }
  ]
}

const data = {
  "id": 1,
  "name": "John",
  "address": {
    "street": "123 Main St",
    "city": "Anytown",
    "zipcode": "12345"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john@example.com"
    },
    {
      "type": "phone",
      "value": "555-1234"
    }
  ]
};

const flattenedData = {
  id: data.id,
  name: data.name,
  street: data.address.street,
  city: data.address.city,
  zipcode: data.address.zipcode,
  contacts: data.contacts.map(contact => ({
    type: contact.type,
    value: contact.value
  }))
};

console.log(flattenedData);