Artem Nanavov

const arr = [
  {name: "name", value: "John"},
  {name: "last_name", value: "Snow"},
  {name: "father_name", value: ""},
  {name: "name", value: "Tony"},
  {name: "last_name", value: "Stark"},
  {name: "father_name", value: ""},
  {name: "other_field", value: "damn"},
];

const newArr = [];

let obj = {};

arr.forEach(item => {
  obj[item.name] = item.value;
  
  if (item.name === 'father_name') {
    newArr.push({...obj});
    obj = {};
  }
});

const sliceStr = (str: string, maxLen: number): string => {
  if (str.length > maxLen) {
    return str.slice(0, maxLen);
  }

  return str;
}