blob.js

  private openDocument(targetWindow: Window, blob: Blob) {
    if (this.useIEBlobStrategy()) {
      targetWindow.navigator.msSaveOrOpenBlob(blob);
    } else {
      const objectUrl = URL.createObjectURL(blob);
      targetWindow.location.assign(objectUrl);
    }
  }

  useIEBlobStrategy(): boolean {
    return !!(window && window.navigator && window.navigator.msSaveOrOpenBlob);
  }