PDFs failing to save via extension on Safari

[jacksonh]

There are a few issues with PDFs in Safari. The main one is the blob type isn't supported so we can't transfer the PDF data from the tab to the background extension context. Sending the full data in the message will fail as there is a max message size for passing data between the two.

return new Promise((resolve, reject) => {
      const xhr = new XMLHttpRequest();
      // load `document` from `cache`
      xhr.open('GET', '', true);
      // xhr.responseType = 'blob';
      xhr.responseType = 'arraybuffer';

      xhr.onload = function (e) {
        if (this.status === 200) {
          // `blob` response
          console.log('response', this.response);
          var arrayBuffer = this.response; // Note: not oReq.responseText
          var byteArray = new Uint8Array(arrayBuffer);
          console.log('sending arraybuffer', byteArray);
            // const blobUrl = URL.createObjectURL(this.response)

          resolve(byteArray);
        } else {
          reject(e);
        }

[jacksonh]

This is resolved with the latest Safari extension update.