Group array of objects based in Date

reduce-array.js

const data = [
  { transactionStatus: 'PROCESSING', date: '2021-12-26T09:40:50', brand: 'MASTERCARD', transactionType: 'CREDIT', value: 500000,},
  { transactionStatus: 'RECEIVED', date: '2021-12-26T10:12:41', brand: 'MASTERCARD', transactionType: 'CREDIT', value: 500000,},
  { transactionStatus: 'CANCELED', date: '2021-12-26T10:12:41', brand: 'MASTERCARD', transactionType: 'CREDIT',  value: 500000,},
  { transactionStatus: 'CANCELED', date: '2021-12-27T12:35:23', brand: 'MASTERCARD', transactionType: 'CREDIT', value: 500000,},
];


const groups = data.reduce((groups, sale) => {
  const time = sale.date.split('T')[0];
  if (!groups[time]) {
    groups[time] = [];
  }
  groups[time].push(sale);
  return groups;
}, {});


const groupArrays = Object.keys(groups).map((time) => {
  return {
    time,
    sales: groups[time]
  };
});

console.log(groupArrays);