create vercel-fastify

vercel-fastify/.gitignore

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+.vercel
+dist

vercel-fastify/README.md

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+## 何をしたかったか
+
+Fastify と fastify-autoload を使って Vercel にデプロイできるかどうかチェック。
+
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fkou029w%2F_%2Ftree%2Fmaster%2Fvercel-fastify)
+
+## 結果
+
+cjs かつ includeFiles に含めればとりあえず OK。
+全部含めるなら `**` でよい。
+
+```json
+{
+  "functions": { "api/index.js": { "includeFiles": "**" } }
+}
+```
+
+TypeScript の場合は、`vercel-build` にビルドコマンドを指定する & ビルド後に生成されるファイルを指定する。(vercel.json を参照)
+そういった設定をせず Vercel に任せると `vercel dev` では問題ないが、デプロイすると参照に失敗して 500 エラー。

vercel-fastify/api/index.ts

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+import { create } from "../dist/server";
+
+const server = create({ isDev: process.env.NODE_ENV === "development" });
+
+async function index(req, res) {
+  await server.ready();
+  server.server.emit("request", req, res);
+}
+
+export default index;

vercel-fastify/package.json

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+{
+  "name": "@kou029w/vercel-fastify",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "build": ":",
+    "vercel-build": "tsup src --clean",
+    "preview": "vercel dev",
+    "deploy": "vercel deploy"
+  },
+  "dependencies": {
+    "fastify": "^3.28.0",
+    "fastify-autoload": "^3.12.0",
+    "pino-pretty": "^7.6.1"
+  },
+  "devDependencies": {
+    "tsup": "^5.12.6",
+    "vercel": "^24.1.0"
+  }
+}

vercel-fastify/public/index.txt

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+OK

vercel-fastify/src/main.ts

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+import { create, start } from "./server";
+
+async function main() {
+  const server = create({ isDev: true });
+  await start(server, "3000");
+}
+
+main();

vercel-fastify/src/routes/api/hello/index.ts

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+import { FastifyInstance } from "fastify";
+
+async function index(fastify: FastifyInstance): Promise<void> {
+  fastify.get("/", async () => "Hello, World!");
+}
+
+export default index;

vercel-fastify/src/routes/api/index.ts

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+import { FastifyInstance } from "fastify";
+
+async function index(fastify: FastifyInstance): Promise<void> {
+  fastify.get("/", async () => fastify.printRoutes());
+  fastify.get("/query", async ({ query }) => query);
+  fastify.post("/body", async ({ body }) => body);
+}
+
+export default index;

vercel-fastify/src/server.ts

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+import fastify, { FastifyInstance } from "fastify";
+import autoload from "fastify-autoload";
+import path from "node:path";
+
+type Options = {
+  isDev?: boolean;
+  quiet?: boolean;
+};
+
+type Server = FastifyInstance;
+
+export function create(options: Options): Server {
+  const app = fastify({
+    logger: !options.quiet && { prettyPrint: options.isDev },
+  });
+  app.register(autoload, {
+    dir: path.resolve(__dirname, "routes"),
+    routeParams: true,
+  });
+  return app;
+}
+
+export async function start(server: Server, port: string): Promise<string> {
+  await server.ready();
+  const address: string = await server.listen(port, "::");
+  return address;
+}

vercel-fastify/vercel.json

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+{
+  "functions": { "api/index.ts": { "includeFiles": "dist/**" } },
+  "rewrites": [{ "source": "/api/(.*)", "destination": "/api/index.ts" }]
+}