A no dependency, simple lib for converting from decimal notation to roman numerals and back again
With yarn installed, run:
$ yarn add romansvar roman = require('romans');
roman.romanize(454);
// returns:"CDLIV"
roman.deromanize("CDLIV")
//returns: 454
roman.allNumerals
// property containing [ 1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1 ]
roman.allChars
// property containing all roman numeral characters
// [ 'M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I' ]$ yarn test