chore: load @cloudflare/workers-types in type declarations

Author: imjlk

src/types.ts

@@ -1,5 +1,3 @@
-/// <reference types="@cloudflare/workers-types" />
-
 import type { AuthContext, Session, User } from "better-auth";
 import type { DrizzleAdapterConfig } from "better-auth/adapters/drizzle";
 import type { FieldAttribute } from "better-auth/db";
@@ -116,7 +114,13 @@ export interface WithCloudflareOptions<
 /**
  * Cloudflare geolocation data
  */
-export interface CloudflareGeolocation extends Partial<IncomingRequestCfProperties> { }
+/**
+ * Ensures TypeScript loads `@cloudflare/workers-types` when consuming this
+ * package's declaration files (required for `IncomingRequestCfProperties`).
+ */
+export type CloudflareWorkersTypes = typeof import("@cloudflare/workers-types");
+
+export interface CloudflareGeolocation extends Partial<IncomingRequestCfProperties> {}
 
 /**
  * Session type enhanced with Cloudflare geolocation data