solution.js

/**
 * @param {string} s
 * @return {string}
 */
var removeStars = function (s) {
  let result = []
  for (let i = 0; i < s.length; i++) {
    if (s[i] === "*") {
      result.pop();
    } else {
      result.push(s[i])
    }
  }

  return result.join("")
};