word2num-ordering.js

const minCharCode = Math.min(...'aAzZ019-_.:,'.toUpperCase().split('').map(c => c.charCodeAt(0)));
const maxCharCode = Math.max(...'aAzZ019-_.:,'.toUpperCase().split('').map(c => c.charCodeAt(0)));

const alphabetSize = maxCharCode - minCharCode + 2;

console.log(minCharCode, maxCharCode, alphabetSize, Number.MAX_SAFE_INTEGER, Number.MIN_SAFE_INTEGER);

function toNumber(char) {
  return char.toUpperCase().charCodeAt(0) - minCharCode + 1;
}

/**
 * @param s string
 */
function embed(s) {
  let sum = 0;
  for (let i = 0; i < s.length; i++) {
    sum += toNumber(s.charAt(i)) / Math.pow(alphabetSize, i+1);
  }
  return sum;
}

const arg = process.argv[2];
console.log(`string: ${arg}`);
console.log(`embed: ${embed(arg)}`);