Possible to combine with apollo-link-batch-http?

[kamsar]

Is there a way to combine automatic persisted queries with a batched link? Guessing not yet, at least it didn't work if I replaced the concat to the HTTP link with a batched instance, but thought I'd ask.

Great idea, really reduces bandwidth :)

Edit: to be more detailed, this is how I tried to combine them:

import { BatchHttpLink } from 'apollo-link-batch-http';
import { createPersistedQueryLink } from 'apollo-link-persisted-queries';

const http = new BatchHttpLink({ uri: httpEndpointUrl });
const persistHttp = createPersistedQueryLink().concat(http);

It does send the queries, but the negotiation of hashes doesn't happen so there is no bandwidth savings. The batch elements have both the complete query text as well as the hash extension added to them.

[wmertens]

I wonder if apollographql/apollo-link#364 will make it work with batching. I'm going to guess "no" :)

[kamsar]

@wmertens I suspect that it will, because on further reflection I think the reason it doesn't work with BatchHttpLink today is that it is using apollo-fetch which may have a different internal API (speculating here) than the plain old HTTP link. It definitely works a lot different if you want to pass credentials with requests.

[kamsar]

As of apollo-link-batch-http 1.2, this now just works, because apollo-fetch is no longer a dependency of the batcher. Thanks @evans :)