Typescript blob filename without link

How to set file name for blob in typescript? For IE, I can setup file name easily but for Chrome it looks impossible. Basically I need something similar to this solution but with typescript

downloadFile(data: any) {
var blob = new Blob([data], {type: 'text/csv'});
let fileName = 'my-test.csv';

if (window.navigator && window.navigator.msSaveOrOpenBlob) {
//save file for IE
window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
//save for other browsers: Chrome, Firefox

var objectUrl = URL.createObjectURL(blob);
window.open(objectUrl);
}
}


this function is called from html UI/angular 2:

<button type="button" class="btn btn-success"
(click)="downloadFile('test')">Download <br /> Download </button>

Continue reading...