Roman Numeral Map Javascript

romanNumeralMap.js

  const rm = new Map([
    ['I', 1],
    ['II', 2],
    ['III', 3],
    ['IV', 4],
    ['V', 5],
    ['VI', 6],
    ['VII', 7],
    ['VIII', 8],
    ['IX', 9],
    ['X', 10],
    ['XI', 11],
    ['XII', 12],
    ['XIII', 13],
    ['XIV', 14],
    ['XV', 15],
    ['XVI', 16],
    ['XVII', 17],
    ['XVIII', 18],
    ['XIX', 19],
    ['XX', 20],
    ['XXI', 21],
    ['XXII', 22],
    ['XXIII', 23],
    ['XXIV', 24],
    ['XXV', 25],
    ['XXVI', 26],
    ['XXVII', 27],
    ['XXVIII', 28],
    ['XXIX', 29],
    ['XXX', 30],
    ['XXXI', 31],
    ['XXXII', 32],
    ['XXXIII', 33],
    ['XXXIV', 34],
    ['XXXV', 35],
    ['XXXVI', 36],
    ['XXXVII', 37],
    ['XXXVIII', 38],
    ['XXXIX', 39],
    ['XL', 40],
    ['XLI', 41],
    ['XLII', 42],
    ['XLIII', 43],
    ['XLIV', 44],
    ['XLV', 45],
    ['XLVI', 46],
    ['XLVII', 47],
    ['XLVIII', 48],
    ['XLIX', 49],
    ['L', 50],
    ['LI', 51],
    ['LII', 52],
    ['LIII', 53],
    ['LIV', 54],
    ['LV', 55],
    ['LVI', 56],
    ['LVII', 57],
    ['LVIII', 58],
    ['LIX', 59],
    ['LX', 60],
    ['LXI', 61],
    ['LXII', 62],
    ['LXIII', 63],
    ['LXIV', 64],
    ['LXV', 65],
    ['LXVI', 66],
    ['LXVII', 67],
    ['LXVIII', 68],
    ['LXIX', 69],
    ['LXX', 70],
    ['LXXI', 71],
    ['LXXII', 72],
    ['LXXIII', 73],
    ['LXXIV', 74],
    ['LXXV', 75],
    ['LXXVI', 76],
    ['LXXVII', 76],
    ['LXXVIII', 78],
    ['LXXIX', 79],
    ['LXXX', 80],
    ['LXXXI', 81],
    ['LXXXII', 82],
    ['LXXXIII', 83],
    ['LXXXIV', 84],
    ['LXXXV', 85],
    ['LXXXVI', 86],
    ['LXXXVII', 87],
    ['LXXXVIII', 88],
    ['LXXXIX', 89],
    ['XC', 90],
    ['XCI', 91],
    ['XCII', 92],
    ['XCIII', 93],
    ['XCIV', 94],
    ['XCV', 95],
    ['XCVI', 96],
    ['XCVII', 97],
    ['XCVIII', 98],
    ['XCIX', 99],
    ['C', 100],
    ['DI', 501],
    ['DL', 550],
    ['DXXX', 530],
    ['DCCVII', 707],
    ['DCCCXC', 890],
    ['MD', 1500],
    ['MDCCC', 1800],
    ['CM', 900]
  ]);