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// Object containing various event constants
window.HUB_EVENTS = {
  ASSET_ADDED: "ASSET_ADDED",
  ASSET_DELETED: "ASSET_DELETED",
  ASSET_DESELECTED: "ASSET_DESELECTED",
  ASSET_SELECTED: "ASSET_SELECTED",
  ASSET_UPDATED: "ASSET_UPDATED",
  CONSOLE_CHANGE: "CONSOLE_CHANGE",
  CONSOLE_CLOSED: "CONSOLE_CLOSED",
  CONSOLE_EVENT: "CONSOLE_EVENT",
  CONSOLE_OPENED: "CONSOLE_OPENED",
  CONSOLE_RUN_COMMAND: "CONSOLE_RUN_COMMAND",
  CONSOLE_SERVER_CHANGE: "CONSOLE_SERVER_CHANGE",
  EMBED_ACTIVE_PEN_CHANGE: "EMBED_ACTIVE_PEN_CHANGE",
  EMBED_ACTIVE_THEME_CHANGE: "EMBED_ACTIVE_THEME_CHANGE",
  EMBED_ATTRIBUTE_CHANGE: "EMBED_ATTRIBUTE_CHANGE",
  EMBED_RESHOWN: "EMBED_RESHOWN",
  FORMAT_FINISH: "FORMAT_FINISH",
  FORMAT_ERROR: "FORMAT_ERROR",
  FORMAT_START: "FORMAT_START",
  IFRAME_PREVIEW_RELOAD_CSS: "IFRAME_PREVIEW_RELOAD_CSS",
  IFRAME_PREVIEW_URL_CHANGE: "IFRAME_PREVIEW_URL_CHANGE",
  KEY_PRESS: "KEY_PRESS",
  LINTER_FINISH: "LINTER_FINISH",
  LINTER_START: "LINTER_START",
  PEN_CHANGE_SERVER: "PEN_CHANGE_SERVER",
  PEN_CHANGE: "PEN_CHANGE",
  PEN_EDITOR_CLOSE: "PEN_EDITOR_CLOSE",
  PEN_EDITOR_CODE_FOLD: "PEN_EDITOR_CODE_FOLD",
  PEN_EDITOR_ERRORS: "PEN_EDITOR_ERRORS",
  PEN_EDITOR_EXPAND: "PEN_EDITOR_EXPAND",
  PEN_EDITOR_FOLD_ALL: "PEN_EDITOR_FOLD_ALL",
  PEN_EDITOR_LOADED: "PEN_EDITOR_LOADED",
  PEN_EDITOR_REFRESH_REQUEST: "PEN_EDITOR_REFRESH_REQUEST",
  PEN_EDITOR_RESET_SIZES: "PEN_EDITOR_RESET_SIZES",
  PEN_EDITOR_SIZES_CHANGE: "PEN_EDITOR_SIZES_CHANGE",
  PEN_EDITOR_UI_CHANGE_SERVER: "PEN_EDITOR_UI_CHANGE_SERVER",
  PEN_EDITOR_UI_CHANGE: "PEN_EDITOR_UI_CHANGE",
  PEN_EDITOR_UI_DISABLE: "PEN_EDITOR_UI_DISABLE",
  PEN_EDITOR_UI_ENABLE: "PEN_EDITOR_UI_ENABLE",
  PEN_EDITOR_UNFOLD_ALL: "PEN_EDITOR_UNFOLD_ALL",
  PEN_ERROR_INFINITE_LOOP: "PEN_ERROR_INFINITE_LOOP",
  PEN_ERROR_RUNTIME: "PEN_ERROR_RUNTIME",
  PEN_ERRORS: "PEN_ERRORS",
  PEN_LIVE_CHANGE: "PEN_LIVE_CHANGE",
  PEN_LOGS: "PEN_LOGS",
  PEN_MANIFEST_CHANGE: "PEN_MANIFEST_CHANGE",
  PEN_MANIFEST_FULL: "PEN_MANIFEST_FULL",
  PEN_PREVIEW_FINISH: "PEN_PREVIEW_FINISH",
  PEN_PREVIEW_START: "PEN_PREVIEW_START",
  PEN_SAVED: "PEN_SAVED",
  POPUP_CLOSE: "POPUP_CLOSE",
  POPUP_OPEN: "POPUP_OPEN",
  POST_CHANGE: "POST_CHANGE",
  POST_SAVED: "POST_SAVED",
  PROCESSING_FINISH: "PROCESSING_FINISH",
  PROCESSING_START: "PROCESSED_STARTED"
};

// Check if window.CP is not an object, and if not, initialize it as an empty object
if (typeof window.CP !== 'object') {
  window.CP = {};
}

// Object defining properties and methods related to loop monitoring
window.CP.PenTimer = {
  // Properties related to loop monitoring
  programNoLongerBeingMonitored: false,
  timeOfFirstCallToShouldStopLoop: 0,
  _loopExits: {},
  _loopTimers: {},
  START_MONITORING_AFTER: 2e3,
  STOP_ALL_MONITORING_TIMEOUT: 5e3,
  MAX_TIME_IN_LOOP_WO_EXIT: 2200,

  // Method to mark a loop as exited
  exitedLoop: function (E) {
    this._loopExits[E] = true;
  },

  // Method to determine if a loop should stop to prevent infinite execution
  shouldStopLoop: function (E) {
    if (this.programKilledSoStopMonitoring) return true;
    if (this.programNoLongerBeingMonitored) return false;
    if (this._loopExits[E]) return false;
    var _ = this._getTime();
    if (this.timeOfFirstCallToShouldStopLoop === 0) {
      this.timeOfFirstCallToShouldStopLoop = _;
      return false;
    }
    var o = _ - this.timeOfFirstCallToShouldStopLoop;
    if (o < this.START_MONITORING_AFTER) return false;
    if (o > this.STOP_ALL_MONITORING_TIMEOUT) {
      this.programNoLongerBeingMonitored = true;
      return false;
    }
    try {
      this._checkOnInfiniteLoop(E, _);
    } catch (N) {
      this._sendErrorMessageToEditor();
      this.programKilledSoStopMonitoring = true;
      return true;
    }
    return false;
  },

  // Method to send an error message to the editor
  _sendErrorMessageToEditor: function () {
    try {
      if (this._shouldPostMessage()) {
        var E = {
          topic: HUB_EVENTS.PEN_ERROR_INFINITE_LOOP,
          data: {
            line: this._findAroundLineNumber()
          }
        };
        parent.postMessage(E, "*");
      } else {
        this._throwAnErrorToStopPen();
      }
    } catch (_) {
      this._throwAnErrorToStopPen();
    }
  },

  // Method to check if a message should be posted
  _shouldPostMessage: function () {
    return document.location.href.match(/boomboom/);
  },

  // Method to throw an error to stop pen execution
  _throwAnErrorToStopPen: function () {
    throw "We found an infinite loop in your Pen. We've stopped the Pen from running. More details and workarounds at https://blog.codepen.io/2016/06/08/can-adjust-infinite-loop-protection-timing/";
  },

  // Method to find the line number where the infinite loop occurred
  _findAroundLineNumber: function () {
    var E = new Error(),
      _ = 0;
    if (E.stack) {
      var o = E.stack.match(/boomboom\S+:(\d+):\d+/);
      if (o) {
        _ = o[1];
      }
    }
    return _;
  },

  // Method to check for an infinite loop in a specific loop execution
  _checkOnInfiniteLoop: function (E, _) {
    if (!this._loopTimers[E]) {
      this._loopTimers[E] = _;
      return false;
    }
    if (_ - this._loopTimers[E] > this.MAX_TIME_IN_LOOP_WO_EXIT) {
      throw "Infinite Loop found on loop: " + E;
    }
  },

  // Method to get the current timestamp
  _getTime: function () {
    return +new Date();
  }
};

// Method to check if a loop should be stopped and log a warning message if detected
window.CP.shouldStopExecution = function (E) {
  var _ = window.CP.PenTimer.shouldStopLoop(E);
  if (_ === true) {
    console.warn("[CodePen]: An infinite loop (or a loop taking too long) was detected, so we stopped its execution. More details at https://blog.codepen.io/2016/06/08/can-adjust-infinite-loop-protection-timing/");
  }
  return _;
};

// Method to mark a loop as exited
window.CP.exitedLoop = function (E) {
  window.CP.PenTimer.exitedLoop(E);
};

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