module.exports = function repeater(str, options) {

repeatTimes = 'repeatTimes' in options ? options.repeatTimes : 0;

separator = 'separator' in options ? options.separator : '+';

addition = 'addition' in options ? options.addition : '';

additionRepeatTimes = 'additionRepeatTimes' in options ? options.additionRepeatTimes : 0;

additionSeparator = 'additionSeparator' in options ? options.additionSeparator : '|';

outstring = '';

let i = 0;

do {

i++;

if (i > 1) {

outstring = outstring + separator;

}

let add_str = '';

let j = 0;

do {

j++;

if (j > 1) {

add_str = add_str + additionSeparator;

}

add_str = add_str + addition

} while (j < additionRepeatTimes);

outstring = outstring + str + add_str;

} while (i < repeatTimes);

return outstring;

// remove line with error and write your code here

};