download blob typescript

1public downloadBlob(fileName: string, blob: Blob): void {
2  if (window.navigator.msSaveOrOpenBlob) {
3    window.navigator.msSaveBlob(blob, fileName);
4  } else {
5    const anchor = window.document.createElement('a');
6    anchor.href = window.URL.createObjectURL(blob);
7    anchor.download = fileName;
8    document.body.appendChild(anchor);
9    anchor.click();
10    document.body.removeChild(anchor);
11    window.URL.revokeObjectURL(anchor.href);
12  }
13}