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

node_modules/next/dist/build/analysis/extract-const-value.d.ts

@@ -0,0 +1,23 @@
+import type { Module } from '@swc/core';
+export type ExtractValueResult = {
+    value: any;
+} | {
+    unsupported: string;
+    path?: string;
+};
+/**
+ * Extracts the value of an exported const variable named `exportedName`
+ * (e.g. "export const config = { runtime: 'edge' }") from swc's AST.
+ * The value must be one of (or returns unsupported):
+ *   - string
+ *   - boolean
+ *   - number
+ *   - null
+ *   - undefined
+ *   - array containing values listed in this list
+ *   - object containing values listed in this list
+ *
+ * Returns null if the declaration is not found.
+ * Returns { unsupported, path? } if the value contains unsupported nodes.
+ */
+export declare function extractExportedConstValue(module: Module | null, exportedName: string): ExtractValueResult | null;