node base64转图片保存

const fs = require("fs");

 const base64 = base64_URL.replace(/^data:image\/\w+;base64,/, "");
 const path = `${imagePath}${Date.now()}${index}.png`;
  fs.writeFile(path, base64, 'base64', function (err) {
      if (err) {
          console.log(err);
      } else {
          console.log('写入成功！', path);
      }
  });