ivxl/dist/index.js

convert numbers to roman numerals and vice versa

// src/roman-map.ts
var nums = [1e3, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1];
var romans = [
  "M",
  "CM",
  "D",
  "CD",
  "C",
  "XC",
  "L",
  "XL",
  "X",
  "IX",
  "V",
  "IV",
  "I"
];

// src/number-to-roman.ts
var numberToRoman = (num, roman2 = "") => {
  const index = nums.findIndex((n) => num >= n);
  return index === -1 || !Number.isInteger(num) || num < 1 || num > 4999 ? roman2 : numberToRoman(num - nums[index], roman2 + romans[index]);
};

// src/roman-to-number.ts
var romanToNumber = (roman2, num = 0, orig = roman2) => {
  const index = romans.findIndex((r) => roman2.toUpperCase().startsWith(r));
  if (index !== -1) {
    return romanToNumber(
      roman2.slice(romans[index].length),
      num + nums[index],
      orig
    );
  } else {
    return orig.toUpperCase() === numberToRoman(num) ? num : 0;
  }
};

// src/roman.ts
var roman = (val) => romanToNumber(String(val)) || numberToRoman(Number(val));

// src/roman-to-unicode.ts
var conversions = {
  I: "\u2160",
  V: "\u2164",
  X: "\u2169",
  L: "\u216C",
  C: "\u216D",
  D: "\u216E",
  M: "\u216F"
};
var romanToUnicode = (roman2) => roman2.split("").map((r) => conversions[r.toUpperCase()] || r).join("");
export {
  numberToRoman,
  roman,
  romanToNumber,
  romanToUnicode
};
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