How to extend the context object of a graphql call?

@dedrick 

To extend the context object of a GraphQL call, you can do the following:

1. Define a custom context interface: First, create a custom interface that extends the default context object provided by your GraphQL server. This interface will include any additional properties or methods you want to add to the context object.

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interface CustomContext extends Context {
  // Add custom properties or methods here
  user: User;
}

1. Update your GraphQL server configuration: Modify your GraphQL server configuration to include the custom context interface. This can typically be done in the server setup code where you define your GraphQL schema and context.

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const server = new ApolloServer({
  typeDefs,
  resolvers,
  context: ({ req }): CustomContext => {
    // Access the default context object
    const defaultContext = createContext(req);

    // Extend the default context with custom properties or methods
    const customContext: CustomContext = {
      ...defaultContext,
      user: getUserFromRequest(req)
    };

    return customContext;
  }
});

1. Access the extended context in GraphQL resolvers: Once you have extended the context object, you can access the custom properties or methods in your GraphQL resolvers.

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const resolvers = {
  Query: {
    currentUser: (_, __, { user }: CustomContext) => {
      return user;
    },
  },
};

By following these steps, you can extend the context object of a GraphQL call with custom properties or methods to provide additional functionality or data to your resolvers.