Extract the comments from a string.

getCommentsFromString.js

/**
* Extract the comments from a string.
* @param {string} str - The string to extract the comments from.
* @returns {Array.<string>} - An array of comment strings.
*/
function getCommentsFromString(str) {
  str = str.toString();
  var start = str.indexOf("/*");
  var end = str.indexOf("*/");
  var result = [];
  while (start !== -1) {
    result.push(str.slice(start + 2, end));
    start = str.indexOf("/*", end + 2);
    end = str.indexOf("*/", end + 2);
  }
  return result;
}

/* the same as a parser approach */
function getCommentsFromString(str) {
  var start = str.indexOf("/*"),
      end = str.indexOf("*/"),
      i = 0,
      len = str.length,
      comment = "",
      char = "";
  var result = [];
  while (i < len) {
    char = str[i];
    if (char === "/" && str[i + 1] === "*") {
      start = i;
      i += 2;
      while (i < len) {
        char = str[i];
        if (char === "*" && str[i + 1] === "/") {
          end = i;
          i += 2;
          break;
        }
        comment += char;
        i++;
      }
      result.push(comment);
      comment = "";
    }
    i++;
  }
  return result;
}