(function() {
  document.domain = "target.com";
  function postSizeChartHeight() {
    window.parent.postMessage(
      JSON.stringify({
        type: "SIZE_CHART_HEIGHT",
        payload: {
          height: document.body.scrollHeight
        }
      }), '*');
  }

  function rePostSizeChartHeight(event) {
    event.preventDefault();
    if (!(/^https:\/\/(?:[\w.]+?).target.com/g).test(event.origin)) return;

    var parsedMessage;

    try {
      parsedMessage = JSON.parse(event.data);
    } catch (error) {
      parsedMessage = event.data;
      console.error(error);
    }

    if (
      parsedMessage &&
      parsedMessage.type &&
      parsedMessage.type === "GET_SIZE_CHART_HEIGHT"
    ) {
      postSizeChartHeight();
    }
  }

  function removeEvents(event) {
    event.preventDefault();
    event.returnValue = ""; // chrome requirement
    window.removeEventListener("load", postSizeChartHeight);
    window.removeEventListener("message", rePostSizeChartHeight);
    window.removeEventListener("unload", removeEvents);
  }

  window.addEventListener("load", postSizeChartHeight);
  window.addEventListener("message", rePostSizeChartHeight);
  window.addEventListener("unload", removeEvents);
})();