如何过滤javascript中值最低的重复项

const array = [{"item":"Pen","price":3},{"item":"Book","price":10},{"item":"Pen","price":6},{"item":"Book","price":8}]

const result = Object.values(array.reduce((r, o) => {
  if(!r[o.item] || o.price > r[o.item].price) r[o.item] = o

  return r
}, {}))

console.log(result)

let array = [{
    item: "Pen",
    price: 3
  },
  {
    item: "Book",
    price: 10
  },
  {
    item: "Pen",
    price: 6
  },
  {
    item: "Book",
    price: 8
  }
];

// remove dups
let grouped = array.reduce(function(all, next) {
  if (all[next.item]) {
    all[next.item].push(next.price)
  } else {
    all[next.item] = [next.price]
  }
  return all
}, {})

// remove smallest values
let result = Object.keys(grouped).map(function(key) {
  return {
    item: key,
    price: Math.max.apply(null, grouped[key])
  }
})

console.log(result)