How to merge 2 object in javascript [duplicate]

Question

I am getting this object as response object

{
"data": [
    {
        "id": "203",
        "bench": "abc"
    },
    {
        "id": "205",
        "bench": "def"
    }
],
"responseCode": 200,
"isSuccess": "true"
}

now I want to add this object on top of the response object

{
  "id": "0",
  "bench": "Select bench"
}

so the final object should look like this

{
"data": [
    {
        "id": "0",
        "bench": "Select bench"
    },
    {
        "id": "203",
        "bench": "abc"
    },
    {
        "id": "205",
        "bench": "def"
    }
],
"responseCode": 200,
"isSuccess": "true"
}

is there any way to do it in typescript? I tried 'unshift' but it's not working.

Answer 1

  response = {
    "data": [
    {
      "id": "203",
      "bench": "abc"
    },
    {
      "id": "205",
      "bench": "def"
    }
    ],
    "responseCode": 200,
    "isSuccess": "true"
  };

  response.data.unshift({
    "id": "0",
    "bench": "Select bench"
  });
  console.log(response); // shows json object