graphql - Apollo gateway s typescriptom neće prihvatiti korisnički ID u kontekstu

Pokušavam implementirati novi Apollo gateway koristeći TypeScript. Ali stalno naiđem na jedan problem s TypeScriptom koji jednostavno ne mogu riješiti. Poruka o pogrešci je "Property 'userId' does not exist on type 'TContext'.ts(2339)". Napomena: pokušavam implementirati na AWS Lambda.

Koliko ja mogu vidjeti gledajući izvorni kod paketa, TContext=Record je objekt, ali se čini da se ne rješava.

import { ApolloServer } from 'apollo-server-lambda';
import { ApolloGateway, RemoteGraphQLDataSource } from '@apollo/gateway';


const gateway = new ApolloGateway({
  serviceList: [
    { name: 'users', url: 'xx' },
    { name: 'precedents', url: 'xx' }
    // other services
  ],
  buildService({ url }) {
    return new RemoteGraphQLDataSource({
      url,
      willSendRequest({ request, context }) {
        // pass the user's id from the context to underlying services
        // as a header called `user-id`
        request && request.http && request.http.headers.set('user-id', context.userId);
      }
    });
  }
});

const server = new ApolloServer({
  gateway,
  subscriptions: false,
  context: ({ event, context }) => {
    // get the user token from the headers
    const token = event.headers.authorization || '';

    // try to retrieve a user with the token
    const userId = token;

    // add the user to the context
    return {
      headers: event.headers,
      functionName: context.functionName,
      event,
      context,
      userId
    };
  }
});

exports.handler = server.createHandler({
  cors: {
    origin: true,
    credentials: true,
    methods: ['POST', 'GET'],
    allowedHeaders: ['Content-Type', 'Origin', 'Accept', 'authorization']
  }
});

Uredi Ažuriranje prema dolje čini se da dovodi do istog problema.

interface MyContext{
    userId: string;
}

const gateway = new ApolloGateway({
  serviceList: [
    { name: 'users', url: 'xx' },
    { name: 'precedents', url: 'xx' }
    // other services
  ],
  buildService({ url }) {
    return new RemoteGraphQLDataSource({
      url,
      willSendRequest<MyContext>({ request, context } : {request: GraphQLRequest, context: MyContext}) {
        // pass the user's id from the context to underlying services
        // as a header called `user-id`
        request && request.http && request.http.headers.set('user-id', context.userID);
      }
    });
  }
});

Odgovor #1

Prvo, stvorite sučelje koje će opisivati vaš graphql kontekst

interface MyContext{
    userId: string;
}

Zatim dodajte parametar tipa MyContext u metodu willSendRequest ovako

...
willSendRequest<MyContext>({request, context}) {
...

Sada kompajler zna da je kontekst tipa MyContext.