Index: frontend/node_modules/is-path-inside/index.js
===================================================================
--- frontend/node_modules/is-path-inside/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/is-path-inside/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,12 @@
+'use strict';
+const path = require('path');
+
+module.exports = (childPath, parentPath) => {
+	const relation = path.relative(parentPath, childPath);
+	return Boolean(
+		relation &&
+		relation !== '..' &&
+		!relation.startsWith(`..${path.sep}`) &&
+		relation !== path.resolve(childPath)
+	);
+};