Angular 4将base64图像数组下载为ZIP文件

例如: 我有这样一个数组(例如假base64图像)

data = [
  'data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA ...',
  'data:image/png;base64, iVBTYu0KGgoBBBBNSUhYUgJJJJUA ...',
  'data:image/png;base64, CGBHHFGY0goAAAANSUhEUgAAAAUA ...',
  ...
]

我需要一种方法来下载它转换成一个.jpg或.png图像的每个图像,然后编译所有的图像和下载为zip文件。像这样的东西(我不知道代码,我只需要这样的东西)

downloadZip() {
  const arrayAsJPG = [];
  this.data.forEach(i => {
    const imageInJpg = i.convertToJPGfile(); // this is not code, this is a function that converts the base64 to a jpg file
    arrayAsJPG.push(imageInJpg);
  });
  ZipFileSaver.save(arrayAsJPG, 'myImageReport.zip'); // this isn't code neither, just and interpretation of what I need

}