1
window.fakeStorage = {
2
  _data: {},
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  setItem: function (id, val) {
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    return this._data[id] = String(val);
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  },
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  getItem: function (id) {
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    return this._data.hasOwnProperty(id) ? this._data[id] : undefined;
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  },
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  removeItem: function (id) {
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    return delete this._data[id];
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  },
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  clear: function () {
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    return this._data = {};
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  }
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};
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function LocalScoreManager() {
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  this.key     = "bestScore";
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  var supported = this.localStorageSupported();
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  this.storage = supported ? window.localStorage : window.fakeStorage;
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}
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LocalScoreManager.prototype.localStorageSupported = function () {
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  var testKey = "test";
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  var storage = window.localStorage;
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  try {
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    storage.setItem(testKey, "1");
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    storage.removeItem(testKey);
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    return true;
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  } catch (error) {
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    return false;
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  }
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};
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LocalScoreManager.prototype.get = function () {
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  return this.storage.getItem(this.key) || 0;
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};
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LocalScoreManager.prototype.set = function (score) {
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  this.storage.setItem(this.key, score);
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};
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