diff --git a/.gitignore b/.gitignore
index b6ce6d4..d93df3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ __pycache__/
 
 # Output of `make verify` (root Makefile).
 /frontend/screenshots/
+*.tsbuildinfo
diff --git a/frontend/vite.config.d.ts b/frontend/vite.config.d.ts
new file mode 100644
index 0000000..340562a
--- /dev/null
+++ b/frontend/vite.config.d.ts
@@ -0,0 +1,2 @@
+declare const _default: import("vite").UserConfig;
+export default _default;
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
new file mode 100644
index 0000000..b72d283
--- /dev/null
+++ b/frontend/vite.config.js
@@ -0,0 +1,25 @@
+import path from "node:path";
+import tailwindcss from "@tailwindcss/vite";
+import { tanstackRouter } from "@tanstack/router-plugin/vite";
+import react from "@vitejs/plugin-react-swc";
+import { defineConfig } from "vite";
+// https://vitejs.dev/config/
+export default defineConfig({
+    // A portal serves this bundle under a path of its own and caches one copy
+    // for every installation, so asset URLs have to be absolute under that
+    // prefix. Unset — every ordinary build — this stays "/".
+    base: process.env.VITE_BASE || "/",
+    resolve: {
+        alias: {
+            "@": path.resolve(__dirname, "./src"),
+        },
+    },
+    plugins: [
+        tanstackRouter({
+            target: "react",
+            autoCodeSplitting: true,
+        }),
+        react(),
+        tailwindcss(),
+    ],
+});