Advent of code (2020) - CODE 5 - 2

Advent of code (2020) - CODE 5 - 2

(async () => {
    const result = [];
    const entries = (await(await fetch('https://adventofcode.com/2020/day/5/input')).text()).split('\n').map(item => item);
    entries.forEach(item => {
        let rows = { min: 1, max: 128 };
        let columns = { min: 1, max: 8 };
        let totalRows = 128;
        let totalColumns = 8;
        const card = Array.from(item);
        card.forEach((letter, iCard) => {
            if (iCard <= 6) {
                totalRows = totalRows / 2;
                rows[letter === 'F' ? 'max' : 'min'] = letter === 'F' ? rows.max - totalRows : rows.min + totalRows;
            } else {
                totalColumns = totalColumns / 2;
                columns[letter === 'L' ? 'max' : 'min'] = letter === 'L' ? columns.max - totalColumns : columns.min + totalColumns;
            }
        });
        /* 
            Restamos 1 para obtener el valor correcto (0 - 127), 
            ya que las operaciones matemáticas se han realizado de 1 a 128
        */
        rows.min--;
        rows.max--;
        columns.min--;
        columns.max--;
        const id = rows.min * 8 + columns.min;
        console.table([rows, columns, id]);
        result.push(id);
    });
    const startTime = performance.now();
    const endTime = performance.now();
    const orderSeats = result.sort((a, b) => a > b ? -1 : 1);
    let seatOK = 0;
    orderSeats.forEach((seat, index, arr) => {
        if (arr[index] && arr[index + 1] > 0) {
            const check = seat - 1 === arr[index + 1];
            if (!check) {
                seatOK = seat - 1;
                console.log(`Asiento: ${seat} / Siguiente asiento: ${arr[index + 1]} = ${seat - 1} === ${arr[index + 1]} => ${seat - 1 === arr[index + 1]}`);     
            }
        }
    });
    console.log(`Asiento: ${seatOK} / ID más alto: ${Math.max.apply(null, result)}`, `${parseFloat(endTime - startTime).toFixed(4)} ms`);
})();