Index: frontend/node_modules/math-intrinsics/isNaN.js
===================================================================
--- frontend/node_modules/math-intrinsics/isNaN.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/math-intrinsics/isNaN.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,6 @@
+'use strict';
+
+/** @type {import('./isNaN')} */
+module.exports = Number.isNaN || function isNaN(a) {
+	return a !== a;
+};