odin-default-js-exercises/02_repeatString/repeatString.js

const repeatString = function(string, num) {
    let output = "";
    if (num < 0) {
        return "ERROR";
    }
    for (i = 1; i <= num; i++) {
        output += string;
    }
    return output;
};
// Do not edit below this line
module.exports = repeatString;