Fix type declarations

Author: akirk

packages/playground/website/src/github/git-auth-helpers.ts

@@ -37,7 +37,7 @@ export function createGitHubAuthHeaders(): (
 ) => Record<string, string> {
 	const token = oAuthState.value.token;
 
-	return (url: string) => {
+	return (url: string): Record<string, string> => {
 		if (!token || !isGitHubUrl(url)) {
 			return {};
 		}

packages/playground/website/src/lib/types.d.ts

@@ -3,3 +3,8 @@ declare module 'virtual:website-config' {
 	export const remotePlaygroundOrigin: string;
 	export const buildVersion: string;
 }
+
+// Defined in vite.config.ts
+declare module 'virtual:cors-proxy-url' {
+	export const corsProxyUrl: string;
+}