title: how to download file with blob function using angular 5
body: <p>download any file type with blob function</p>
  
  <pre><code>private saveAsBlob(data: any) {
   const blob = new Blob([data._body],
   const file = new File([blob], 'image.png',
   FileSaver.saveAs(file);
  }
  </code></pre>