snowberb – 11-12 Sep 19

const newTab = window.open('');

    if (newTab) {
      newTab.document.title = documentName;
      newTab?.document.write(
        `<iframe title="${documentName}" width='100%' height='100%' src='data:application/pdf;base64,${encodeURI(
          base64,
        )}'></iframe>`,
      );
    }