vercel: Add Vercel support

.gitignore

@@ -9,3 +9,6 @@ pnpm-lock.yaml
 
 # Yarn
 yarn.lock
+
+# Vercel
+.vercel

middleware.js

@@ -0,0 +1,5 @@
+import handler from "./common";
+
+export default middleware = async (request) => {
+  return handler(request);
+};

vercel.json

@@ -0,0 +1,7 @@
+{
+  "installCommand": "mkdir publish",
+  "buildCommand": "echo 1 > ./publish/index",
+  "outputDirectory": "publish",
+  "public": false,
+  "trailingSlash": false
+}