use standard twemoji module from NPM

assets/js/index.js

@@ -1,5 +1,5 @@
 import "./src/counter.js";
 import "./src/projects.js";
-import "./vendor/twemoji.js";
+import "./src/emoji.js";
 
 export default () => {};

assets/js/src/emoji.js

@@ -0,0 +1,8 @@
+import twemoji from "twemoji";
+
+twemoji.parse(document.body, {
+  callback: function (icon, options) {
+    // simpler relative URIs
+    return "/assets/emoji/" + icon + ".svg";
+  },
+});