Initial working version with the Adapters API

[vicb]

Can be tested with

// next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  experimental: {
    adapterPath: "/path/to/app/node_modules/@opennextjs/cloudflare/dist/cli/adapter.js"
  }
};

export default nextConfig;

// open-next.config.ts
const config = {
  default: {
    minify: false,
    override: {
				wrapper: "cloudflare-node",
				converter: "edge",
				proxyExternalRequest: "fetch",
				incrementalCache: "dummy",
				tagCache: "dummy",
				queue: "dummy",
				cdnInvalidation: "dummy",
    },
  },

  dangerous: {
    middlewareHeadersOverrideNextConfigHeaders: true,
    useAdapterOutputs: true,
  },

		middleware: {
			external: true,
			override: {
				wrapper: "cloudflare-edge",
				converter: "edge",
				proxyExternalRequest: "fetch",
				incrementalCache: "dummy",
				tagCache: "dummy",
				queue: "dummy",
			},
			assetResolver: () => null,
		},
};

export default config;

// wrangler.jsonc
{
	"$schema": "node_modules/wrangler/config-schema.json",
	"main": ".open-next/worker.js",
	"name": "create-next-app",
	"compatibility_date": "2025-10-01",
	"compatibility_flags": ["nodejs_compat", "global_fetch_strictly_public"],
	"assets": {
		"directory": ".open-next/assets",
		"binding": "ASSETS"
	}
}

You can then pnpm build and pnpm wrangler dev

Note that pnpm build should point to next build --webpack (turbopack is now the default but not supported yet)

[changeset-bot]

⚠️ No Changeset found

Latest commit: fa79087

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[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@opennextjs/cloudflare@961

commit: fa79087

[mhart]

Just tried this out on a (basic) Next.js 16 project and it worked like a charm

[vicb]

Oops thank @mhart, I forgot to merge this PR.
We will merge the branch adapters-api back to main when we update the tests