Скрыть мой массив json в моей структуре json в reactjs

Вы можете использовать функцию сокращения, чтобы решить эту проблему. См. ниже:

const airlinesReducer = (accumulator, current) => {
  // Breakdown the entry into name and other fields
  let { airline, ...airlineFields} = current;

  // Look for a previously indexed entry
  let airlineData = accumulator.indexed[airline]
  
  // If the airline hasn't been indexed before, add it to the index map
  if (!airlineData) {
    // Create a reference for the new array to be filled
    airlineData = accumulator.indexed[airline] = []
    accumulator.result.push({
      airline: current.airline,
      data: airlineData
    })
  } 
  
  // Push this entry to the results array
  airlineData.push(airlineFields)
  return accumulator
}

let result = array.reduce(airlinesReducer, { indexed: {}, result: [] }).result

Вот еще одно решение с некоторым кодом ES6

const arr = [
  {
    date: '2020-12-10',
    airline: 'Air asia',
    totalprice: 4180,
    departuretime: '20:25',
  },
  {
    date: '2020-12-10',
    airline: 'Air asia',
    totalprice: 4180,
    departuretime: '11:25',
  },
  {
    date: '2020-12-10',
    airline: 'Air asia',
    totalprice: 4180,
    departuretime: '22:45',
  },
  {
    date: '2020-12-10',
    airline: 'Air india',
    totalprice: 4180,
    departuretime: '06:10',
  },
  {
    date: '2020-12-10',
    airline: 'Air india',
    totalprice: 4180,
    departuretime: '13:50',
  },
  {
    date: '2020-12-10',
    airline: 'Air india',
    totalprice: 4180,
    departuretime: '07:05',
  },
];

//Using a Set datastructure to capture individual airline names
let uniqueAirlinesSet = new Set();
for (let el of arr) {
  uniqueAirlinesSet.add(el.airline);
}

// Converted set to array of unique elements like this["Air Asia","Air India"]
const uniqueAirlinesArr = [...uniqueAirlinesSet];

const newFormattedArray = uniqueAirlinesArr.reduce((acc, el) => {
  const obj = {
    airline: el,
    data: [],
  };
  for (let { airline, date, departuretime, totalprice } of arr) {
    if (el === airline) {
      obj.data.push({ date, departuretime, totalprice });
    }
  }
  acc.push(obj);
  return acc;
}, []);