fix paths in patch

packages/vite-environment-provider-cloudflare/src/moduleFallback.ts

@@ -216,7 +216,31 @@ function patchModuleFallbackHandler(
   handler: ModuleFallbackHandler,
 ): ModuleFallbackHandler {
   return async request => {
-    const response = await handler(request);
+    const url = new URL(request.url);
+
+    for (const pathName of ['referrer', 'specifier']) {
+      const path = url.searchParams.get(pathName);
+      if (path) {
+        // workerd always adds a `/` to the absolute paths (raw values excluded) that is fine in OSes like mac and linux
+        // where absolute paths do start with `/` as well. But it is not ok in windows where absolute paths don't start
+        // with `/`, so for windows we need to remove the extra leading `/`
+        //
+        // Either way this is an issue caused by workerd adding the leading `/`, if it were not to do that and simply return
+        // the correct path the path would not need fixing
+        //
+        const fixedPath =
+          process.platform !== 'win32' ? path : path.replace(/^\//, '');
+        url.searchParams.set(pathName, fixedPath);
+      }
+    }
+
+    const { referrerPolicy, ...reqRest } = request;
+    const fixedRequest = new Request(url, {
+      ...reqRest,
+    });
+
+    const response = await handler(fixedRequest);
+
     if (response.status === 200) {
       const respJson = (await response.json()) as Record<string, string>;
       return Response.json({