const chars = 'abcdehlkmrtwxyz'.toUpperCase()
const to = (decimal) => {
let out = ''
while (true) {
let remainder = (decimal - 1) % chars.length
out = chars[remainder] + out;
decimal = Math.floor((decimal - 1) / chars.length);
if (decimal === 0) break
}
return out;
}
const from = (alpha) => {
const crs = chars.split('')
const letters = alpha.split('')
let out = 0
for (let i = 0; i < letters.length; i++) {
let indexPos = crs.indexOf(letters[letters.length - 1 - i])
out += (indexPos + 1) * Math.pow(crs.length, i)
}
return out
}
module.exports = { to, from }
console.log(to(123123))
console.log(from('BHLCC'))
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