fix(subscription): update request return type correctly match apollo-link

[dpilch]

Description of changes:
Continuing change from #566. This change was originally created by a contributor but it appears to have been abandoned. See #566 for full description.

See v2 change: #728

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[dpilch]

Canceling this change. Please use ApolloLink exported from @apollo/client and there shouldn't be an issue.

import React from "react";
import { registerRootComponent } from "expo";
import Amplify from "aws-amplify";
import AppSyncConfig from "./src/aws-exports";
import { createAuthLink } from "aws-appsync-auth-link";
import { createSubscriptionHandshakeLink } from "aws-appsync-subscription-link";
import {
  ApolloLink,
  ApolloClient,
  ApolloProvider,
  InMemoryCache,
} from "@apollo/client";
import App from "./App";

Amplify.configure(AppSyncConfig);

const url = AppSyncConfig.aws_appsync_graphqlEndpoint;
const region = AppSyncConfig.aws_appsync_region;
const auth = {
  type: AppSyncConfig.aws_appsync_authenticationType,
  apiKey: AppSyncConfig.aws_appsync_apiKey,
};

const link = ApolloLink.from([
  createAuthLink({ url, region, auth }),
  createSubscriptionHandshakeLink({ url, region, auth }),
]);

const client = new ApolloClient({
  link,
  cache: new InMemoryCache(),
});

const WithProvider = () => (
  <ApolloProvider client={client}>
    <App />
  </ApolloProvider>
);

export default registerRootComponent(WithProvider);

[dguisinger]

Canceling this change. Please use ApolloLink exported from @apollo/client and there shouldn't be an issue.

import React from "react";
import { registerRootComponent } from "expo";
import Amplify from "aws-amplify";
import AppSyncConfig from "./src/aws-exports";
import { createAuthLink } from "aws-appsync-auth-link";
import { createSubscriptionHandshakeLink } from "aws-appsync-subscription-link";
import {
  ApolloLink,
  ApolloClient,
  ApolloProvider,
  InMemoryCache,
} from "@apollo/client";
import App from "./App";

export default registerRootComponent(WithProvider);

@dpilch This doesn't fix problems with Angular Apollo. @apollo/client has a dependency on React whereas @apollo/client/core does not. There is a whole thread about @apollo/client vs @apollo/client/core over at the Apollo repo: apollographql/apollo-client#7318

The original fix in #566 of changing it to Observable on the return type gets that line to build.

I'm also adding my name to others on #713 that ZenObservable is also failing to build in Angular projects.