@tasolutions/express-core/utils/calculate.js

All libs for express

'use strict';

module.exports = {

    numberToLetters: (num) => {
        let letters = ''
        while (num >= 0) {
            letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'[num % 26] + letters
            num = Math.floor(num / 26) - 1
        }
        return letters
    }

};