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Cloudflare Workers

Export router.fetch as the default module fetch handler.

1. Install​

npm install @daiso-tech/core hono
npm install -D @cloudflare/workers-types wrangler

2. Create the handler​

// src/index.ts
import {
    HttpRouter,
    HttpRes,
    defaultHttpRouterAdapter,
} from "@daiso-tech/core/http-router";

const router = new HttpRouter({ router: defaultHttpRouterAdapter });

router.endpoint({
    url: "/hello",
    method: "GET",
    handler: async () => HttpRes.text("Hello Cloudflare Workers!"),
});

export default { fetch: (request: Request) => router.fetch(request) };

File structure

.
├── src
│   └── index.ts
├── package.json
├── tsconfig.json
└── wrangler.toml

wrangler.toml

name = "my-app"
main = "src/index.ts"
compatibility_date = "2025-01-01"

3. Develop​

npx wrangler dev

4. Deploy​

npx wrangler deploy

Limitations: Cloudflare Workers have a CPU time limit (10ms–30s depending on plan). No filesystem access. Use Workers KV, R2, or D1 for storage.

Reference: Hono on Cloudflare Workers