异步javascript：不进入循环

Question

我有一个关于for循环的问题，因为如果在异步功能中使用它，则不会进入循环。这是我的代码：

const selectedData = [
  { id: "2468005", name: "468005 (2012 XD112)" },
  { id: "2004953", name: "4953 (1990 MU)" }
];
const minDate = new Date("1900-01-01");
const maxDate = new Date("1999-12-31");

async function getDataForChart() {
  let chartingData = [];
  selectedData.forEach(element => {
    let url = `someurl`;

    fetch(url)
      .then(res => res.json())
      .then(data => {
        const filteredDates = data.close_approach_data.filter(obj => {
          let checkDate = new Date(obj.close_approach_date);
          return checkDate > minDate && checkDate < maxDate;
        });
        chartingData.push({
          name: element.name,
          itterations: filteredDates.length
        });
      });
  });
  return chartingData;
}

(async () => {
  const dataSet = await getDataForChart();
  console.log(dataSet);
  let labels = [];
  let itterationData = [];
  let backgroundColor = [];
  /**
   * set specific data for each selected element
   */
  dataSet.forEach(data => {
    if (data.itterations < 25) {
      labels.push(data.name);
      itterationData.push(data.itterations);
      backgroundColor.push("green");
    } else if (data.itterations < 45) {
      labels.push(data.name);
      itterationData.push(data.itterations);
      backgroundColor.push("yellow");
    } else if (data.itterations < 75) {
      labels.push(data.name);
      itterationData.push(data.itterations);
      backgroundColor.push("orange");
    } else if (data.itterations >= 75) {
      labels.push(data.name);
      itterationData.push(data.itterations);
      backgroundColor.push("red");
    }
  });
})();

我也尝试了for / of循环，但还是一样。它记录我需要的数据，但不会运行循环。知道如何解决这个问题吗？