AdventOfCode: Day 4 - Part 2

let raw = `...`;
let fields = [
  /^byr:(19[2-9]\d|200[0-2])$/,
  /^iyr:(20[1]\d|2020)$/,
  /^eyr:(20[2]\d|2030)$/,
  /^hgt:((1([5-8]\d|9[0-3])cm)|(([5-6]\d|7[0-6])in))$/,
  /^hcl:#[a-fA-F0-9]{6}$/,
  /^ecl:(amb|blu|brn|gry|grn|hzl|oth)$/,
  /^pid:[0]*\d{9}$/,
];

let passports = raw.split(/\n\n/).map(a => a.split(/\s/));
let valid = passports.filter(b =>
    b.filter(a =>
        fields.filter(x => a.match(x)).length,
    ).length === 7,
).length;
console.log(valid);