Index: frontend/node_modules/test-exclude/is-outside-dir-posix.js
===================================================================
--- frontend/node_modules/test-exclude/is-outside-dir-posix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/test-exclude/is-outside-dir-posix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,7 @@
+'use strict';
+
+const path = require('path');
+
+module.exports = function(dir, filename) {
+    return /^\.\./.test(path.relative(dir, filename));
+};