fix(cloudflare): allow spaces in filenames (#3047)

* Added URL decode to Cloudflare adapter static logic.

* Added changeset.

* Updated to attempt URL decode and ignore on fail.

Co-authored-by: Luke Edwards <luke.edwards05@gmail.com>

* Fixed formatting issues.

Co-authored-by: Luke Edwards <luke.edwards05@gmail.com>

Author: isaac-mcfadyen

.changeset/twenty-turkeys-promise.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-cloudflare': patch
+---
+
+Updated Cloudflare adapter to allow static files with spaces (eg. "Example File.pdf") to be accessed.

packages/adapter-cloudflare/files/worker.js

@@ -6,8 +6,16 @@ init();
 export default {
 	async fetch(req, env) {
 		const url = new URL(req.url);
+
 		// check generated asset_set for static files
-		if (ASSETS.has(url.pathname.substring(1))) {
+		let pathname = url.pathname.substring(1);
+		try {
+			pathname = decodeURIComponent(pathname);
+		} catch (err) {
+			// ignore
+		}
+
+		if (ASSETS.has(pathname)) {
 			return env.ASSETS.fetch(req);
 		}