HtmlWebpackPlugin - config step 2

index.ejs

<script>
(function() {
    function showErrorMessage() {
        alert('Oops, something went wrong! Please reload the page.');
    }
    
    // Paths of all bundles
    var bundlesSrcs = <%= JSON.stringify(htmlWebpackPlugin.files.js) %>;
    for(var i=0; i < bundlesSrcs.length; i++) {
        // Create script tag & configure it
        var scriptTag = document.createElement('script');
        scriptTag.src = bundlesSrcs[i];
        scriptTag.addEventListener('error', showErrorMessage);
        
        // Append script tag into body 
        document.body.appendChild(scriptTag);
    }
})();
</script>