Support settings export in new config

[jamesopstad]

Add a settings export to the experimental cloudflare.config.ts config

Account-level settings (accountId, complianceRegion) now live in a dedicated, named settings export authored via defineSettings, rather than on the Worker config. A cloudflare.config.ts can export at most one settings object; the Worker itself is the default export.

// cloudflare.config.ts
import { defineSettings, defineWorker } from "wrangler/experimental-config";
import * as entrypoint from "./src/index.ts" with { type: "cf-worker" };

export const settings = defineSettings({
	accountId: "<your-account-id>",
});

export default defineWorker({
	name: "my-worker",
	entrypoint,
	compatibilityDate: "2026-05-18",
});

This is only used behind the experimental new-config path (wrangler --experimental-new-config and the @cloudflare/vite-plugin experimental.newConfig option).

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: experimental feature

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[changeset-bot]

🦋 Changeset detected

Latest commit: cbd348a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@cloudflare/config	Minor
@cloudflare/vite-plugin	Minor
wrangler	Minor
@cloudflare/vitest-pool-workers	Patch

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commit: cbd348a

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