apolloclient set headers code example
Example: apollo client add custom header
import { ApolloClient, HttpLink, ApolloLink, InMemoryCache, concat } from '@apollo/client';
const httpLink = new HttpLink({ uri: '/graphql' });
const authMiddleware = new ApolloLink((operation, forward) => {
// add the authorization to the headers
operation.setContext({
headers: {
authorization: localStorage.getItem('token') || null,
}
});
return forward(operation);
})
const client = new ApolloClient({
cache: new InMemoryCache(),
link: concat(authMiddleware, httpLink),
});