Перевести объект с множеством вложенностей в многомерный массив

var posts = {"1":{"id":1,"body":"\u041f\u0435\u0440\u0432\u044b\u0439 \u041f\u043e\u0441\u0442","user_id":3,"created_at":"2019-10-04 01:00:00","updated_at":null,"comments":[{"id":1,"body":"\u041f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":0,"user_id":3,"created_at":"2019-10-04 00:00:00","updated_at":null},{"id":2,"body":"\u041f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":1,"user_id":3,"created_at":"2019-10-04 02:00:00","updated_at":null},{"id":3,"body":"\u041f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":2,"user_id":3,"created_at":"2019-10-04 01:00:00","updated_at":null},{"id":4,"body":"\u0412\u0442\u043e\u0440\u043e\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":0,"user_id":3,"created_at":"2019-10-04 03:00:00","updated_at":null}],"children":{"1":{"id":1,"body":"\u041f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":0,"user_id":3,"created_at":"2019-10-04 00:00:00","updated_at":null,"children":{"2":{"id":2,"body":"\u041f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":1,"user_id":3,"created_at":"2019-10-04 02:00:00","updated_at":null,"children":{"3":{"id":3,"body":"\u041f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439 \u043f\u0435\u0440\u0432\u044b\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":2,"user_id":3,"created_at":"2019-10-04 01:00:00","updated_at":null}}}}},"4":{"id":4,"body":"\u0412\u0442\u043e\u0440\u043e\u0439","commentable_id":1,"commentable_type":"App\\Models\\Post","parent_id":0,"user_id":3,"created_at":"2019-10-04 03:00:00","updated_at":null}}},"2":{"id":2,"body":"\u0412\u0442\u043e\u0440\u043e\u0439 \u041f\u043e\u0441\u0442","user_id":3,"created_at":"2019-10-04 00:00:00","updated_at":null,"comments":[]}};
 
function objectToMultidimensionalArray(obj, nameChildrenField) {
    return Object.keys(obj).map(function(key) {
        console.log(obj, obj[key][nameChildrenField], key, obj[key].body, nameChildrenField);
        if (obj[key][nameChildrenField]) obj[key][nameChildrenField] = objectToMultidimensionalArray(obj[key][nameChildrenField]);
        return [Number(key), obj[key]];
    });
}
 
  var r = objectToMultidimensionalArray(posts, 'children');
 
console.log(r, 'result');