Download a .zip file from a blob URL using Javascript with Fetch.

download_zip.js

/*
 * @Author Raymond Pittman
 * @Github: https://github.com/raymondpittman
 */
function download(url, filename) {
    fetch(url, {
        mode: 'no-cors' /*{mode:'cors'}*/
    }).then((transfer) => {
        return transfer.blob();
    }).then((bytes) => {
        let elm = document.createElement('a');
        elm.href = URL.createObjectURL(bytes);
        elm.setAttribute('download', filename);
        elm.click()
    }).catch((error) => {
        console.log(error);
    })
}

download('http://.zip', 'test.zip');