Empty proxy object returned when target is empty object

[stingrayfunk]

I'm using a third-party library that uses Proxy and I'm attempting to use your polyfill in IE11.

They're using it like this:

  return new Proxy(
    {},
    {
      get: (_, propKey): unknown => {
        if (isAppRoute(router)) {
          switch (propKey) {
            case 'query':
              return getRouteQuery(router, args);
            case 'mutation':
              return getRouteQuery(router, args);
            case 'useQuery':
              return getRouteUseQuery(router, args);
            case 'useInfiniteQuery':
              return getRouteUseInfiniteQuery(router, args);
            case 'useQueries':
              return getRouteUseQueries(router, args);
            case 'useMutation':
              return getRouteUseMutation(router, args);
            default:
              throw new Error(`Unknown method called on ${String(propKey)}`);
          }
        } else {
          const subRouter = router[propKey as string];

          return createNewProxy(subRouter, args);
        }
      },
    }
  );

Source: https://github.com/ts-rest/ts-rest/blob/main/libs/ts-rest/react-query/src/lib/react-query.ts#L344

So they pass {} as the target argument.

When I use your polyfill, I get an empty Proxy object back. Can someone please help with why this is the case? Does your polyfill support this type of usage?

Without the polyfill, this usage works fine in modern browsers.