fix: wrangler types decouple env-interface from namespace

[HW13]

Fixes #10020

Describe your change...

Wrangler types command now adds a BaseEnv interface which is then extended by Cloudflare.Env and the --env-interface. Example output:

/* eslint-disable */
// Generated by Wrangler by running \`wrangler types --env-interface MyCloudflareEnv --include-runtime=false\` (hash: ...)
interface BaseEnv {
	MY_VAR: "my-var-value";
}
declare namespace Cloudflare {
	interface GlobalProps {
		mainModule: typeof import("./src/index");
	}
	interface Env extends BaseEnv {}
}
interface MyCloudflareEnv extends BaseEnv {}

While this doesn't outright resolve #10020, it ensures that the env-interface for each worker no longer depends on the namespace. This allows it to be explicitly passed into the WorkerEntrypoint or type cast to the env - which will prevent issues with conflicting Cloudflare namespaces.

import { WorkerEntrypoint } from 'cloudflare:workers'

export class MyService extends WorkerEntrypoint<MyCloudflareEnv> {
  // ...
}

import { env } from 'cloudflare:workers'

export const myCloudflareEnv = env as MyCloudflareEnv

---

• Tests
  • Tests included/updated
  • Tests not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: References to the worker-configuration.d.ts in the docs appear to be intentionally simplified and don't include the Cloudflare namespace (example)
  • Wrangler PR:
  • Not necessary because: Not sure about this one, happy to do it if needed though

[changeset-bot]

🦋 Changeset detected

Latest commit: f4cfded

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

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commit: 3d44a76

[HW13]

Tests have been updated and the latest changes from main have been rebased into this branch. Could I please get workflow approval? 🙏