add login/sign-up page with dark/light mode

node_modules/es-iterator-helpers/Iterator/shim.js

@@ -0,0 +1,18 @@
+'use strict';
+
+var define = require('define-properties');
+var globalThis = require('globalthis')();
+
+var getPolyfill = require('./polyfill');
+
+module.exports = function shimIterator() {
+	var polyfill = getPolyfill();
+
+	define(
+		globalThis,
+		{ Iterator: polyfill },
+		{ Iterator: function () { return Iterator !== polyfill; } }
+	);
+
+	return polyfill;
+};