Sweetalert syntax error in IE

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jQuery

SweetAlert- working fine in chrome and firefox, but not working in IE <pre>

What I have tried:

<pre>  <a id="download" href="#">Click here to download</a>

<pre><script>
    $(document).ready(function () {
       
        $("#download").click(function () {
            Swal.mixin({
                input: 'email',
                confirmButtonText: 'Next →',
                showCancelButton: true,
                //progressSteps: ['']
            }).queue([
              {                  
                  text: 'Please enter Email-Id'
              }
            ]).then((result) => {   <------------here ill get syntax error 
                if (result.value) {
                    Swal.fire({
                                title: 'All done!',
                        html:'<pre><code><a href="Home/DownloadFile?username='+result.value+'">Click here to download</a></code>

',
confirmButtonText: 'Cancel'
});
}
});

});

});