fix: avoid colliding with user-typed platform.env

.changeset/tall-forks-brush.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-cloudflare': patch
+---
+
+fix: avoid type collision with user defined `App.Platform` `env` property

packages/adapter-cloudflare/ambient.d.ts

@@ -7,7 +7,8 @@ import {
 declare global {
 	namespace App {
 		export interface Platform {
-			env: unknown;
+			// we should not type `env` here because it will override any type set by
+			// the user in `src/app.d.ts`
 			ctx: ExecutionContext;
 			/** @deprecated Use `ctx` instead */
 			context: ExecutionContext;

packages/adapter-cloudflare/index.js

@@ -183,13 +183,13 @@ export default function (options = {}) {
 			// If we would await it here, it would hang indefinitely because the platform proxy only resolves once a request happens
 			const get_emulated = async () => {
 				const proxy = await getPlatformProxy(options.platformProxy);
-				const platform = /** @type {App.Platform} */ ({
+				const platform = {
 					env: proxy.env,
 					ctx: proxy.ctx,
 					context: proxy.ctx, // deprecated in favor of ctx
 					caches: proxy.caches,
 					cf: proxy.cf
-				});
+				};
 				/** @type {Record<string, any>} */
 				const env = {};
 				const prerender_platform = /** @type {App.Platform} */ (/** @type {unknown} */ ({ env }));
@@ -203,7 +203,6 @@ export default function (options = {}) {
 				return { platform, prerender_platform };
 			};
 
-			/** @type {{ platform: App.Platform, prerender_platform: App.Platform }} */
 			let emulated;
 
 			return {