fix: exclude database/context from browser bundle to fix Docker build (#2)

database/context.ts uses AsyncLocalStorage from node:async_hooks which
is a Node.js-only API. Vite externalizes it for browser builds but the
resulting error "AsyncLocalStorage is not exported by __vite-browser-external"
caused npm run build to fail.

Fix: add a Vite resolve.alias for the browser (non-SSR) build that maps
~/database/context to a browser-safe stub. The stub is never called at
runtime since database() is only invoked in server-side loaders, but it
allows the client bundle to build without errors.

https://claude.ai/code/session_01Fjf9WFqNnuHmmC5yTedL7G

Co-authored-by: Claude <noreply@anthropic.com>

database/context.browser-stub.ts

@@ -0,0 +1,9 @@
+// Browser-safe stub for database/context
+// The real implementation uses Node.js AsyncLocalStorage which is server-only.
+// This stub is used during the client build to avoid bundling server-only code.
+
+export const DatabaseContext = null as any;
+
+export function database(): never {
+  throw new Error("database() can only be called on the server");
+}

vite.config.ts

@@ -1,8 +1,12 @@
 import { reactRouter } from "@react-router/dev/vite";
 import tailwindcss from "@tailwindcss/vite";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
 import { defineConfig } from "vite";
 import tsconfigPaths from "vite-tsconfig-paths";
 
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
 export default defineConfig(({ isSsrBuild }) => ({
   build: {
     rollupOptions: isSsrBuild
@@ -11,6 +15,19 @@ export default defineConfig(({ isSsrBuild }) => ({
         }
       : undefined,
   },
+  resolve: {
+    alias: isSsrBuild
+      ? []
+      : [
+          {
+            find: "~/database/context",
+            replacement: path.resolve(
+              __dirname,
+              "database/context.browser-stub.ts"
+            ),
+          },
+        ],
+  },
   plugins: [tailwindcss(), reactRouter(), tsconfigPaths()],
   server: {
     allowedHosts: true,