[Solved] JavaScript: Convert array of objects into array of object of array of object

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You can do something like this

const data = [{date: 2021,name: 'New York',price: 452}, {date: 2020,name: 'New York',price: 452}, {date: 2021,name: 'Oregon',price: 452}]

const result = Object.values(data.reduce((res, {name,...rest}) => {
  return {
    ...res,
    [name]: {
      name,
      values: [...(res[name] || {values: []}).values, rest]
    }
  }
}, []))

console.log(result)

solved JavaScript: Convert array of objects into array of object of array of object