new file mode 100644

@@ -0,0 +1,37 @@

+(function(){

+    function stringifyEvent(event) {

+        var obj = {};

+        for (var key in event) {

+            obj[key] = event[key];

+        }

+        return JSON.stringify(obj, function(key, value){

+            if(value instanceof Node){

+                var nodeRep = value.tagName;

+                if (nodeRep) {

+                    nodeRep = nodeRep.toLowerCase();

+                    if(value.id){

+                        nodeRep += "#" + value.id;

+                    }

+                    if(value.classList && value.classList.length){

+                        nodeRep += "." + value.classList.toString().replace(" ", ".")

+                    }

+                    return nodeRep;

+                } else {

+                    return "Node"

+                }

+            }

+            if (value instanceof Window) return 'Window';

+            return value;

+        });

+    }

+

+    htmx.defineExtension('event-header', {

+        onEvent: function (name, evt) {

+            if (name === "htmx:configRequest") {

+                if (evt.detail.triggeringEvent) {

+                    evt.detail.headers['Triggering-Event'] = stringifyEvent(evt.detail.triggeringEvent);

+                }

+            }

+        }

+    });

+})();