how to get the meta info in middleware

[lamhungypl]

Hello folks, I'm using RtkQuery with endpoints.queryFn declarations and building a middleware to catch queryFn's meta data.

  export const injectedApi = api.endpoints: (build) => ({
      Product: build.query<ANY, ANY>({
        queryFn: async () => {
          try {
          } catch (e){
            return { error: e, meta : { message: 'Error' }
          }
        },
      }),
    }),

Inspire from #3432 (comment) , I achieve the following result:

type QueryMeta = {
  message?: boolean;
};
export const errorMetaDataMiddleware: Middleware =
  (api: MiddlewareAPI) => (next) => (action) => {
    if (isRejectedWithValue(action)) {
      if (isAnyOf(action.matchRejected)) {
        if (!action.meta?.baseQueryMeta?.message) {
          toast.error(message);
        }
      }
    }

    return next(action);
  };

This works, but the action.meta?.baseQueryMeta is not documented anywhere and is not type-safe.
My question is: are there any other utilities that help extract the meta : { message: 'Error' } in a type-safe way?

[markerikson]

No, you'll need to do some combination of existence checks and type guards.