How can we use middlewares after graphqlHTTP?

Is there anyway to use a middleware after graphqlHTTP middleware? As a use case, suppose we want to use response.redirect() after using graphqlHTTP middleware. How can we do that?

[amokrushin]

const { PassThrough } = require('stream');

function graphqlMiddlewareWrapper(graphqlMiddleware) {
    return (req, res, next) => {
        const resProxy = new PassThrough();
        resProxy.headers = new Map();
        resProxy.statusCode = 200;
        resProxy.setHeader = (name, value) => {
            resProxy.headers.set(name, value);
        };
        res.graphqlResponse = (cb) => {
            res.statusCode = resProxy.statusCode;
            resProxy.headers.forEach((value, name) => {
                res.setHeader(name, value);
            });
            resProxy.pipe(res).on('finish', cb);
        };
        graphqlMiddleware(req, resProxy).then(() => next(), next);
    };
}

Usage

app.use('/graphql',
    graphqlMiddlewareWrapper(graphqlHttp({
        schema,
        graphiql: true,
    })),
    (req, res, next) => {
        console.log('SUCCESS');
        if (something) {
            // res.redirect(), etc
            res.status(200).end('something');
        } else {
            // pass through graphql response
            res.graphqlResponse(next);
        }
    },
    (err, req, res, next) => {
        console.log('CATCH ERROR');
        res.status(500).end(err.message);
        next();
    }
);

[scottc-netflix]

Just FYI for anyone using apollo-server-express you can do this:

graphqlExpress({
  schema,
  formatResponse(response) {
    // do something with response
    return response;
  },
  formatError(err) {
    // same
    return err;
  }
})