How to get a Buffer instead of a Blob？

[lycpan233]

I'm in a Node environment, asBlob gets a Blob object. I expect a buffer, how do I configure it?

    const blob = await HtmlDocx.asBlob(htmlText);

I noticed the presence of the global attribute, but I don't know how to change it

  generateDocument: function(zip) {
    var buffer;
    buffer = zip.generate({
      type: 'arraybuffer'
    });
    if (global.Blob) {
      return new Blob([buffer], {
        type: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
      });
    } else if (global.Buffer) {
      return new Buffer(new Uint8Array(buffer));
    } else {
      throw new Error("Neither Blob nor Buffer are accessible in this environment. " + "Consider adding Blob.js shim");
    }
  },