Add some helpers

clipboard.js

@@ -0,0 +1,12 @@
+export const clipboard = function(superClass) {
+  return class extends superClass {
+    copy(content) {
+      const txtEl = document.createElement('input');
+      txtEl.type = 'hidden';
+      document.body.appendChild(txtEl);
+      txtEl.value = content;
+      navigator.clipboard.writeText(content);
+      document.body.removeChild(txtEl);
+    }
+  };
+};