function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
/**
 * Recursive function, calls the original callback() when the directory is entirely parsed.
 *
 * @param {FileSystemDirectoryReader} directoryReader
 * @param {Array} oldEntries
 * @param {Function} logDropError
 * @param {Function} callback - called with ([ all files and directories in that directoryReader ])
 */
export default function getFilesAndDirectoriesFromDirectory(directoryReader, oldEntries, logDropError, _ref) {
  var onSuccess = _ref.onSuccess;
  directoryReader.readEntries(function (entries) {
    var newEntries = [].concat(_toConsumableArray(oldEntries), _toConsumableArray(entries));
    // According to the FileSystem API spec, getFilesAndDirectoriesFromDirectory() must be called until it calls the onSuccess with an empty array.
    if (entries.length) {
      setTimeout(function () {
        getFilesAndDirectoriesFromDirectory(directoryReader, newEntries, logDropError, {
          onSuccess: onSuccess
        });
      }, 0);
      // Done iterating this particular directory
    } else {
      onSuccess(newEntries);
    }
  },
  // Make sure we resolve on error anyway, it's fine if only one directory couldn't be parsed!
  function (error) {
    logDropError(error);
    onSuccess(oldEntries);
  });
}