Set a header in middleware node.js express framework

Question

I have a middleware doing some auth. In this auth-method I need to set a response header.

server.get('/api/users, auth(), getUsers);

My authmethod:

module.exports = (isProduction) => {
  return function(req, res, next){
     ...

     next();

  }
}

How do I attach a header in this auth function?

Answer 1

I assume you are using express.js. In express, there is a set function (documentation here. You can use it like this

res.set('<header name>', '<header value>')

before calling next()