Expose caches to Cloudflare adapter through Platform (#5081)

* Expose `caches` to Cloudflare adapter * Add changeset
sveltejs · Jul 6, 2022 · 320777a · 320777a
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diff --git a/.changeset/sixty-bees-explain.md b/.changeset/sixty-bees-explain.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-cloudflare': minor
+---
+
+Expose Cloudflare Worker Cache API through `caches` in Platform
diff --git a/packages/adapter-cloudflare/README.md b/packages/adapter-cloudflare/README.md
@@ -53,7 +53,7 @@ When configuring your project settings, you must use the following settings:
 
 ## Environment variables
 
-The [`env`](https://developers.cloudflare.com/workers/runtime-apis/fetch-event#parameters) object, containing KV namespaces etc, is passed to SvelteKit via the `platform` property along with `context`, meaning you can access it in hooks and endpoints:
+The [`env`](https://developers.cloudflare.com/workers/runtime-apis/fetch-event#parameters) object, containing KV namespaces etc, is passed to SvelteKit via the `platform` property along with `context` and `caches`, meaning you can access it in hooks and endpoints:
 
 ```diff
 // src/app.d.ts
@@ -66,7 +66,8 @@ declare namespace App {
 +		};
 +		context: {
 +			waitUntil(promise: Promise<any>): void;
-+		}
++		};
++		caches: CacheStorage & { default: Cache }
 +	}
 
 	interface Session {}

diff --git a/packages/adapter-cloudflare/src/worker.js b/packages/adapter-cloudflare/src/worker.js
@@ -54,7 +54,7 @@ const worker = {
 			} else {
 				// dynamically-generated pages
 				res = await server.respond(req, {
-					platform: { env, context },
+					platform: { env, context, caches },
 					getClientAddress() {
 						return req.headers.get('cf-connecting-ip');
 					}