generate new test that did already exist & update all module snippets with declaration

test/copyToClipboard/copyToClipboard.js

@@ -1,4 +1,4 @@
-module.exports = str => {
+module.exports = copyToClipboard = str => {
 const el = document.createElement('textarea');
 el.value = str;
 el.setAttribute('readonly', '');