JSON transformation in node.js - json

Question

I want to transform my data from one json structure to another. What is the best way to do it?
Here is my original resource (customer) structure is:
{
"id": "123",
"data": {
"name": "john doe",
"status": "active",
"contacts": [
{
"email": "john#email.com"
},
{
"phone": "12233333"
}
]
}
}
I want to change it to:
{
"id": "123",
"name": "john doe",
"status": "active",
"contacts": [
{
"email": "john#email.com"
},
{
"phone": "12233333"
}
]
}
Keeping in mind that I might have an array of resources(customers) being returned in GET /customers cases. I want to change that to an array of new data type.

Answer 1

If customer object is array of object then below will help you to get desire format result
var result = customerObj.map(x => {
return {
id: x.id,
name: x.data.name,
status: x.data.status,
contacts: x.data.contacts
};
});

Answer 2

here I have used Object.assign() it will be helpful to you
var arr={
"id": "123",
"data": {
"name": "john doe",
"status": "active",
"contacts": [
{
"email": "john#email.com"
},
{
"phone": "12233333"
}
]
}
}
arr=Object.assign(arr,arr.data);
delete arr['data'];
console.log(arr);

Answer 3

You have to Json.parse the json into variable, and then loop through the array of objects, changes the object to the new format, and then JSON.stringify the array back to json.
Example code
function formatter(oldFormat) {
Object.assign(oldFormat, oldFormat.data);
delete oldFormat.data;
}
let parsedData = JSON.parse(Oldjson);
//Take care for array of results or single result
if (parsedData instanceof Array) {
parsedData.map(customer => formtter(customer));
} else {
formatter(parsedData);
}
let newJson = JSON.stringify(parsedData);
console.log(newJson);
Edit
I made the formatter function cleaner by using Kalaiselvan A code