JavaScript plural function for Russian language.

plural.js

  function getNoun(number, one, two, five) {
    let n = Math.abs(number);
    n %= 100;
    if (n >= 5 && n <= 20) {
      return five;
    }
    n %= 10;
    if (n === 1) {
      return one;
    }
    if (n >= 2 && n <= 4) {
      return two;
    }
    return five;
  }