chore: replace deprecated vercel entrypoint

app/misc/vercel-entrypoint.ts

@@ -0,0 +1,46 @@
+import type { IncomingMessage, ServerResponse } from "node:http";
+import { tinyassert } from "@hiogawa/utils";
+import * as build from "@remix-run/dev/server-build";
+import { createRequestHandler } from "@remix-run/express";
+
+// borrow "@remix-run/express" adapter for vercel serverless deployment
+// since "@remix-run/vercel" is going to deprecate (https://github.com/remix-run/remix/pull/5964)
+// in favor of vercel's official integration (https://github.com/vercel/vercel/blob/da046d85de8121e6c851af8e51aff81984646e0b/packages/remix/defaults/server-node.mjs)
+
+const handleRequest = createRequestHandler({ build });
+
+export default async function vercelEntrypoint(
+  req: IncomingMessage,
+  res: ServerResponse
+): Promise<void> {
+  // a few patches to fake express style Request/Response
+  // https://github.com/remix-run/remix/blame/71e94aa8a84cd9b63669dc9d826cbcbb0d2195a1/packages/remix-express/server.ts
+  // https://github.com/remix-run/remix/blame/71e94aa8a84cd9b63669dc9d826cbcbb0d2195a1/packages/remix-vercel/server.ts
+
+  const req2 = req as any;
+  const res2 = res as any;
+
+  req2.get = (arg: unknown) => {
+    tinyassert(arg === "host");
+    return req.headers["x-forwarded-host"] || req.headers["host"];
+  };
+
+  req2.protocol = req.headers["x-forwarded-proto"] || "https";
+
+  res2.status = (arg: unknown) => {
+    tinyassert(typeof arg === "number");
+    res.statusCode = arg;
+  };
+
+  res2.append = (k: unknown, v: unknown) => {
+    tinyassert(typeof k === "string");
+    tinyassert(Array.isArray(v));
+    res.setHeader(k, v);
+  };
+
+  let error: unknown;
+  await handleRequest(req2, res2, (e) => (error = e));
+  if (error) {
+    throw error;
+  }
+}

package.json

@@ -46,6 +46,7 @@
     "@hiogawa/utils": "1.4.2-pre.4",
     "@hiogawa/utils-react": "1.2.1-pre.4",
     "@js-temporal/polyfill": "^0.4.3",
+    "@remix-run/express": "1.15.0",
     "@remix-run/node": "1.15.0",
     "@remix-run/react": "1.15.0",
     "@remix-run/server-runtime": "1.15.0",
@@ -82,6 +83,7 @@
     "@remix-run/serve": "1.15.0",
     "@tsconfig/strictest": "^1.0.2",
     "@types/bcryptjs": "^2.4.2",
+    "@types/express": "^4.17.17",
     "@types/fs-extra": "^9.0.13",
     "@types/node": "^16",
     "@types/qs": "^6.9.7",