iXeon

const src = [{ id: 1, fullPrice: 123, rating: 5 }, { id: 2, fullPrice: 103, rating: 3 }];

const checkProps = ['fullPrice', 'rating'];

const xValues = (method, initialValue) =>
  src.reduce((acc, c) => {
    Object.entries(c).forEach(([key, value]) => {
      if (checkProps.includes(key)) {
        acc[key] = Math[method](acc[key], value);
      }
    });

    return acc;
  }, Object.fromEntries(checkProps.map(propName => [propName, initialValue])));

const minValues = xValues('min', Number.POSITIVE_INFINITY);
const maxValues = xValues('max', Number.NEGATIVE_INFINITY);

const result = src.map(item =>
  Object.fromEntries(
    Object.entries(item).map(([key, value]) => {
      if (checkProps.includes(key)) {
        return [key, { value, min: minValues[key] === value, max: maxValues[key] === value }];
      }
      return [key, value];
    })
  )
);

[
  {
    "id": 1,
    "fullPrice": {
      "value": 123,
      "min": false,
      "max": true
    },
    "rating": {
      "value": 5,
      "min": false,
      "max": true
    }
  },
  {
    "id": 2,
    "fullPrice": {
      "value": 103,
      "min": true,
      "max": false
    },
    "rating": {
      "value": 3,
      "min": true,
      "max": false
    }
  }
]