🍣

Closes #12, #227 and #58

src/web/app/common/scripts/contains.js

@@ -1,8 +1,8 @@
-module.exports = function(parent, child) {
+export default (parent, child) => {
 	let node = child.parentNode;
 	while (node) {
 		if (node == parent) return true;
 		node = node.parentNode;
 	}
 	return false;
-}
+};