@graphql-sse/apollo-client

A client for GraphQL subscription using Server Sent Events.

Installation

``shell
npm install @graphql-sse/apollo-client
`

Usage

$3

The snippet below is from the Example React App where you have a full working example App.

`typescript
import { split, HttpLink, ApolloClient, InMemoryCache } from '@apollo/client';
import { getMainDefinition } from '@apollo/client/utilities';
import { ServerSentEventsLink } from '@graphql-sse/apollo-client';

const httpLink = new HttpLink({
uri: 'http://localhost:4000/graphql',
});

const sseLink = new ServerSentEventsLink({
graphQlSubscriptionUrl: 'http://localhost:4000/graphql',
});

const splitLink = split(
({ query }) => {
const definition = getMainDefinition(query);
return (
definition.kind === 'OperationDefinition' &&
definition.operation === 'subscription'
);
},
sseLink,
httpLink
);

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

``